diff --git a/docs/changelog.py b/docs/changelog.py
index c96ff0b..350cef4 100644
--- a/docs/changelog.py
+++ b/docs/changelog.py
@@ -52,15 +52,15 @@ A total of %d pull requests were merged for this release.
 
 
 def get_authors(revision_range):
-    pat = '^.*\\t(.*)$'
-    lst_release, cur_release = (r.strip() for r in revision_range.split('..'))
+    pat = "^.*\\t(.*)$"
+    lst_release, cur_release = (r.strip() for r in revision_range.split(".."))
 
     # authors, in current release and previous to current release.
-    cur = set(re.findall(pat, this_repo.git.shortlog('-s', revision_range), re.M))
-    pre = set(re.findall(pat, this_repo.git.shortlog('-s', lst_release), re.M))
+    cur = set(re.findall(pat, this_repo.git.shortlog("-s", revision_range), re.M))
+    pre = set(re.findall(pat, this_repo.git.shortlog("-s", lst_release), re.M))
 
     # Append '+' to new authors.
-    authors = [s + ' +' for s in cur - pre] + [s for s in cur & pre]
+    authors = [s + " +" for s in cur - pre] + [s for s in cur & pre]
     authors.sort()
     return authors
 
@@ -69,7 +69,7 @@ def get_pull_requests(repo, revision_range):
     prnums = []
 
     # From regular merges
-    merges = this_repo.git.log('--oneline', '--merges', revision_range)
+    merges = this_repo.git.log("--oneline", "--merges", revision_range)
     issues = re.findall("Merge pull request \\#(\\d*)", merges)
     prnums.extend(int(s) for s in issues)
 
@@ -79,9 +79,9 @@ def get_pull_requests(repo, revision_range):
 
     # From fast forward squash-merges
     commits = this_repo.git.log(
-        '--oneline', '--no-merges', '--first-parent', revision_range
+        "--oneline", "--no-merges", "--first-parent", revision_range
     )
-    issues = re.findall('^.*\\(\\#(\\d+)\\)$', commits, re.M)
+    issues = re.findall("^.*\\(\\#(\\d+)\\)$", commits, re.M)
     prnums.extend(int(s) for s in issues)
 
     # get PR data from github repo
@@ -91,10 +91,10 @@ def get_pull_requests(repo, revision_range):
 
 
 def main(token, revision_range):
-    lst_release, cur_release = (r.strip() for r in revision_range.split('..'))
+    lst_release, cur_release = (r.strip() for r in revision_range.split(".."))
 
     github = Github(token)
-    github_repo = github.get_repo('saimn/sigal')
+    github_repo = github.get_repo("saimn/sigal")
 
     # document authors
     authors = get_authors(revision_range)
@@ -105,7 +105,7 @@ def main(token, revision_range):
     print(author_msg % len(authors))
 
     for s in authors:
-        print('* ' + s)
+        print("* " + s)
 
     # document pull requests
     pull_requests = get_pull_requests(github_repo, revision_range)
@@ -132,7 +132,7 @@ if __name__ == "__main__":
     from argparse import ArgumentParser
 
     parser = ArgumentParser(description="Generate author/pr lists for release")
-    parser.add_argument('token', help='github access token')
-    parser.add_argument('revision_range', help='<revision>..<revision>')
+    parser.add_argument("token", help="github access token")
+    parser.add_argument("revision_range", help="<revision>..<revision>")
     args = parser.parse_args()
     main(args.token, args.revision_range)
diff --git a/docs/conf.py b/docs/conf.py
index 197acbe..98de6d7 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -7,7 +7,7 @@ from pkg_resources import get_distribution
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-sys.path.append(os.path.abspath('..'))
+sys.path.append(os.path.abspath(".."))
 
 # -- General configuration ----------------------------------------------------
 
@@ -16,34 +16,34 @@ sys.path.append(os.path.abspath('..'))
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.extlinks', 'alabaster']
+extensions = ["sphinx.ext.autodoc", "sphinx.ext.extlinks", "alabaster"]
 
-extlinks = {'issue': ('https://github.com/saimn/sigal/issues/%s', '#%s')}
+extlinks = {"issue": ("https://github.com/saimn/sigal/issues/%s", "#%s")}
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # The suffix of source filenames.
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The encoding of source files.
 # source_encoding = 'utf-8-sig'
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = 'Sigal'
-copyright = '2012-2020, Simon Conseil'
+project = "Sigal"
+copyright = "2012-2020, Simon Conseil"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-release = get_distribution('sigal').version
+release = get_distribution("sigal").version
 # for example take major/minor
-version = '.'.join(release.split('.')[:2])
+version = ".".join(release.split(".")[:2])
 
 
 # The language for content autogenerated by Sphinx. Refer to documentation
@@ -58,7 +58,7 @@ version = '.'.join(release.split('.')[:2])
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = ["_build"]
 
 # If true, '()' will be appended to :func: etc. cross-reference text.
 # add_function_parentheses = True
@@ -72,7 +72,7 @@ exclude_patterns = ['_build']
 # show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 # A list of ignored prefixes for module index sorting.
 # modindex_common_prefix = []
@@ -81,20 +81,20 @@ pygments_style = 'sphinx'
 # -- Options for HTML output --------------------------------------------------
 
 html_theme_path = [alabaster.get_path()]
-html_theme = 'alabaster'
+html_theme = "alabaster"
 html_sidebars = {
-    '**': [
-        'about.html',
-        'navigation.html',
-        'searchbox.html',
-        'donate.html',
+    "**": [
+        "about.html",
+        "navigation.html",
+        "searchbox.html",
+        "donate.html",
     ]
 }
 html_theme_options = {
     # 'logo': 'logo.png',
-    'github_user': 'saimn',
-    'github_repo': 'sigal',
-    'description': "Yet another simple static gallery generator.",
+    "github_user": "saimn",
+    "github_repo": "sigal",
+    "description": "Yet another simple static gallery generator.",
     # 'analytics_id': 'UA-18486793-2',
     # 'travis_button': True,
 }
@@ -165,4 +165,4 @@ html_theme_options = {
 # html_file_suffix = None
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'Sigaldoc'
+htmlhelp_basename = "Sigaldoc"
diff --git a/pyproject.toml b/pyproject.toml
index b740522..8cb0670 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,4 +8,3 @@ write_to = "src/sigal/version.py"
 [tool.black]
 line-length = 88
 target-version = ['py38']
-skip-string-normalization = true
diff --git a/src/sigal/__init__.py b/src/sigal/__init__.py
index de22a55..9e01997 100644
--- a/src/sigal/__init__.py
+++ b/src/sigal/__init__.py
@@ -41,9 +41,9 @@ except ImportError:
     # package is not installed
     __version__ = None
 
-__url__ = 'https://github.com/saimn/sigal'
+__url__ = "https://github.com/saimn/sigal"
 
-_DEFAULT_CONFIG_FILE = 'sigal.conf.py'
+_DEFAULT_CONFIG_FILE = "sigal.conf.py"
 
 
 @click.group()
@@ -59,7 +59,7 @@ def main():
 
 
 @main.command()
-@argument('path', default=_DEFAULT_CONFIG_FILE)
+@argument("path", default=_DEFAULT_CONFIG_FILE)
 def init(path):
     """Copy a sample config file in the current directory (default to
     'sigal.conf.py'), or use the provided 'path'."""
@@ -70,44 +70,44 @@ def init(path):
 
     from pkg_resources import resource_string
 
-    conf = resource_string(__name__, 'templates/sigal.conf.py')
+    conf = resource_string(__name__, "templates/sigal.conf.py")
 
-    with open(path, 'w', encoding='utf-8') as f:
-        f.write(conf.decode('utf8'))
+    with open(path, "w", encoding="utf-8") as f:
+        f.write(conf.decode("utf8"))
     print(f"Sample config file created: {path}")
 
 
 @main.command()
-@argument('source', required=False)
-@argument('destination', required=False)
-@option('-f', '--force', is_flag=True, help="Force the reprocessing of existing images")
-@option('-v', '--verbose', is_flag=True, help="Show all messages")
+@argument("source", required=False)
+@argument("destination", required=False)
+@option("-f", "--force", is_flag=True, help="Force the reprocessing of existing images")
+@option("-v", "--verbose", is_flag=True, help="Show all messages")
 @option(
-    '-d',
-    '--debug',
+    "-d",
+    "--debug",
     is_flag=True,
     help=(
         "Show all messages, including debug messages. Also raise "
         "exception if an error happen when processing files."
     ),
 )
-@option('-q', '--quiet', is_flag=True, help="Show only error messages")
+@option("-q", "--quiet", is_flag=True, help="Show only error messages")
 @option(
-    '-c',
-    '--config',
+    "-c",
+    "--config",
     default=_DEFAULT_CONFIG_FILE,
     show_default=True,
     help="Configuration file",
 )
 @option(
-    '-t',
-    '--theme',
+    "-t",
+    "--theme",
     help=(
         "Specify a theme directory, or a theme name for the themes included with Sigal"
     ),
 )
-@option('--title', help="Title of the gallery (overrides the title setting.")
-@option('-n', '--ncpu', help="Number of cpu to use (default: all)")
+@option("--title", help="Title of the gallery (overrides the title setting.")
+@option("-n", "--ncpu", help="Number of cpu to use (default: all)")
 def build(
     source, destination, debug, verbose, quiet, force, config, theme, title, ncpu
 ):
@@ -118,7 +118,7 @@ def build(
 
     """
     if sum([debug, verbose, quiet]) > 1:
-        sys.exit('Only one option of debug, verbose and quiet should be used')
+        sys.exit("Only one option of debug, verbose and quiet should be used")
 
     if debug:
         level = logging.DEBUG
@@ -139,14 +139,14 @@ def build(
     start_time = time.time()
     settings = read_settings(config)
 
-    for key in ('source', 'destination', 'theme'):
+    for key in ("source", "destination", "theme"):
         arg = locals()[key]
         if arg is not None:
             settings[key] = os.path.abspath(arg)
         logger.info("%12s : %s", key.capitalize(), settings[key])
 
-    if not settings['source'] or not os.path.isdir(settings['source']):
-        logger.error("Input directory not found: %s", settings['source'])
+    if not settings["source"] or not os.path.isdir(settings["source"]):
+        logger.error("Input directory not found: %s", settings["source"])
         sys.exit(1)
 
     # on windows os.path.relpath raises a ValueError if the two paths are on
@@ -155,8 +155,8 @@ def build(
     relative_check = True
     try:
         relative_check = os.path.relpath(
-            settings['destination'], settings['source']
-        ).startswith('..')
+            settings["destination"], settings["source"]
+        ).startswith("..")
     except ValueError:
         pass
 
@@ -165,75 +165,75 @@ def build(
         sys.exit(1)
 
     if title:
-        settings['title'] = title
+        settings["title"] = title
 
-    locale.setlocale(locale.LC_ALL, settings['locale'])
+    locale.setlocale(locale.LC_ALL, settings["locale"])
     init_plugins(settings)
 
     gal = Gallery(settings, ncpu=ncpu, quiet=quiet)
     gal.build(force=force)
 
     # copy extra files
-    for src, dst in settings['files_to_copy']:
-        src = os.path.join(settings['source'], src)
-        dst = os.path.join(settings['destination'], dst)
-        logger.debug('Copy %s to %s', src, dst)
-        copy(src, dst, symlink=settings['orig_link'], rellink=settings['rel_link'])
+    for src, dst in settings["files_to_copy"]:
+        src = os.path.join(settings["source"], src)
+        dst = os.path.join(settings["destination"], dst)
+        logger.debug("Copy %s to %s", src, dst)
+        copy(src, dst, symlink=settings["orig_link"], rellink=settings["rel_link"])
 
     stats = gal.stats
 
     def format_stats(_type):
         opt = [
-            "{} {}".format(stats[_type + '_' + subtype], subtype)
-            for subtype in ('skipped', 'failed')
-            if stats[_type + '_' + subtype] > 0
+            "{} {}".format(stats[_type + "_" + subtype], subtype)
+            for subtype in ("skipped", "failed")
+            if stats[_type + "_" + subtype] > 0
         ]
-        opt = ' ({})'.format(', '.join(opt)) if opt else ''
-        return f'{stats[_type]} {_type}s{opt}'
+        opt = " ({})".format(", ".join(opt)) if opt else ""
+        return f"{stats[_type]} {_type}s{opt}"
 
     if not quiet:
-        stats_str = ''
-        types = sorted({t.rsplit('_', 1)[0] for t in stats})
+        stats_str = ""
+        types = sorted({t.rsplit("_", 1)[0] for t in stats})
         for t in types[:-1]:
-            stats_str += f'{format_stats(t)} and '
-        stats_str += f'{format_stats(types[-1])}'
+            stats_str += f"{format_stats(t)} and "
+        stats_str += f"{format_stats(types[-1])}"
         end_time = time.time() - start_time
-        print(f'Done, processed {stats_str} in {end_time:.2f} seconds.')
+        print(f"Done, processed {stats_str} in {end_time:.2f} seconds.")
 
 
 def init_plugins(settings):
     """Load plugins and call register()."""
 
     logger = logging.getLogger(__name__)
-    logger.debug('Plugin paths: %s', settings['plugin_paths'])
+    logger.debug("Plugin paths: %s", settings["plugin_paths"])
 
-    for path in settings['plugin_paths']:
+    for path in settings["plugin_paths"]:
         sys.path.insert(0, path)
 
-    for plugin in settings['plugins']:
+    for plugin in settings["plugins"]:
         try:
             if isinstance(plugin, str):
                 mod = importlib.import_module(plugin)
                 mod.register(settings)
             else:
                 plugin.register(settings)
-            logger.debug('Registered plugin %s', plugin)
+            logger.debug("Registered plugin %s", plugin)
         except Exception as e:
-            logger.error('Failed to load plugin %s: %r', plugin, e)
+            logger.error("Failed to load plugin %s: %r", plugin, e)
 
-    for path in settings['plugin_paths']:
+    for path in settings["plugin_paths"]:
         sys.path.remove(path)
 
 
 @main.command()
-@argument('destination', default='_build')
-@option('-p', '--port', help="Port to use", default=8000)
+@argument("destination", default="_build")
+@option("-p", "--port", help="Port to use", default=8000)
 @option(
-    '-c',
-    '--config',
+    "-c",
+    "--config",
     default=_DEFAULT_CONFIG_FILE,
     show_default=True,
-    help='Configuration file',
+    help="Configuration file",
 )
 def serve(destination, port, config):
     """Run a simple web server."""
@@ -241,7 +241,7 @@ def serve(destination, port, config):
         pass
     elif os.path.exists(config):
         settings = read_settings(config)
-        destination = settings.get('destination')
+        destination = settings.get("destination")
         if not os.path.exists(destination):
             sys.stderr.write(
                 f"The '{destination}' directory doesn't exist, maybe try building"
@@ -255,7 +255,7 @@ def serve(destination, port, config):
         )
         sys.exit(2)
 
-    print(f'DESTINATION : {destination}')
+    print(f"DESTINATION : {destination}")
     os.chdir(destination)
     Handler = server.SimpleHTTPRequestHandler
     httpd = socketserver.TCPServer(("", port), Handler, False)
@@ -267,14 +267,14 @@ def serve(destination, port, config):
         httpd.server_activate()
         httpd.serve_forever()
     except KeyboardInterrupt:
-        print('\nAll done!')
+        print("\nAll done!")
 
 
 @main.command()
-@argument('target')
-@argument('keys', nargs=-1)
+@argument("target")
+@argument("keys", nargs=-1)
 @option(
-    '-o', '--overwrite', default=False, is_flag=True, help='Overwrite existing .md file'
+    "-o", "--overwrite", default=False, is_flag=True, help="Overwrite existing .md file"
 )
 def set_meta(target, keys, overwrite=False):
     """Write metadata keys to .md file.
@@ -294,9 +294,9 @@ def set_meta(target, keys, overwrite=False):
         sys.exit(1)
 
     if os.path.isdir(target):
-        descfile = os.path.join(target, 'index.md')
+        descfile = os.path.join(target, "index.md")
     else:
-        descfile = os.path.splitext(target)[0] + '.md'
+        descfile = os.path.splitext(target)[0] + ".md"
     if os.path.exists(descfile) and not overwrite:
         sys.stderr.write(
             f"Description file '{descfile}' already exists. "
diff --git a/src/sigal/gallery.py b/src/sigal/gallery.py
index a976657..daa04a8 100644
--- a/src/sigal/gallery.py
+++ b/src/sigal/gallery.py
@@ -73,7 +73,7 @@ class Media:
 
     """
 
-    type = ''
+    type = ""
     """Type of media, e.g. ``"image"`` or ``"video"``."""
 
     def __init__(self, filename, path, settings):
@@ -91,7 +91,7 @@ class Media:
         self.src_ext = os.path.splitext(filename)[1].lower()
         """Input extension."""
 
-        self.src_path = join(settings['source'], path, self.src_filename)
+        self.src_path = join(settings["source"], path, self.src_filename)
 
         self.thumb_name = get_thumb(self.settings, self.dst_filename)
 
@@ -108,7 +108,7 @@ class Media:
     def __getstate__(self):
         state = self.__dict__.copy()
         # remove un-pickable objects
-        state['logger'] = None
+        state["logger"] = None
         return state
 
     def __setstate__(self, state):
@@ -118,11 +118,11 @@ class Media:
 
     @property
     def dst_path(self):
-        return join(self.settings['destination'], self.path, self.dst_filename)
+        return join(self.settings["destination"], self.path, self.dst_filename)
 
     @property
     def thumb_path(self):
-        return join(self.settings['destination'], self.path, self.thumb_name)
+        return join(self.settings["destination"], self.path, self.thumb_name)
 
     @property
     def url(self):
@@ -134,22 +134,22 @@ class Media:
         """Path to the original image, if ``keep_orig`` is set (relative to the
         album directory). Copy the file if needed.
         """
-        if self.settings['keep_orig']:
+        if self.settings["keep_orig"]:
             s = self.settings
-            if s['use_orig']:
+            if s["use_orig"]:
                 # The image *is* the original, just use it
                 return self.src_filename
-            orig_path = join(s['destination'], self.path, s['orig_dir'])
+            orig_path = join(s["destination"], self.path, s["orig_dir"])
             check_or_create_dir(orig_path)
             big_path = join(orig_path, self.src_filename)
             if not isfile(big_path):
                 copy(
                     self.src_path,
                     big_path,
-                    symlink=s['orig_link'],
-                    rellink=self.settings['rel_link'],
+                    symlink=s["orig_link"],
+                    rellink=self.settings["rel_link"],
                 )
-            return join(s['orig_dir'], self.src_filename)
+            return join(s["orig_dir"], self.src_filename)
 
     @property
     def big_url(self):
@@ -162,47 +162,47 @@ class Media:
         """Path to the thumbnail image (relative to the album directory)."""
 
         if not isfile(self.thumb_path):
-            self.logger.debug('Generating thumbnail for %r', self)
+            self.logger.debug("Generating thumbnail for %r", self)
             path = self.dst_path if os.path.exists(self.dst_path) else self.src_path
             try:
                 # if thumbnail is missing (if settings['make_thumbs'] is False)
                 s = self.settings
-                if self.type == 'image':
+                if self.type == "image":
                     image.generate_thumbnail(
-                        path, self.thumb_path, s['thumb_size'], fit=s['thumb_fit']
+                        path, self.thumb_path, s["thumb_size"], fit=s["thumb_fit"]
                     )
-                elif self.type == 'video':
+                elif self.type == "video":
                     video.generate_thumbnail(
                         path,
                         self.thumb_path,
-                        s['thumb_size'],
-                        s['thumb_video_delay'],
-                        fit=s['thumb_fit'],
-                        converter=s['video_converter'],
-                        black_retries=s['thumb_video_black_retries'],
-                        black_offset=s['thumb_video_black_retry_offset'],
-                        black_max_colors=s['thumb_video_black_max_colors'],
+                        s["thumb_size"],
+                        s["thumb_video_delay"],
+                        fit=s["thumb_fit"],
+                        converter=s["video_converter"],
+                        black_retries=s["thumb_video_black_retries"],
+                        black_offset=s["thumb_video_black_retry_offset"],
+                        black_max_colors=s["thumb_video_black_max_colors"],
                     )
             except Exception as e:
-                self.logger.error('Failed to generate thumbnail: %s', e)
+                self.logger.error("Failed to generate thumbnail: %s", e)
                 return
         return url_from_path(self.thumb_name)
 
     @cached_property
     def description(self):
         """Description extracted from the Markdown <imagename>.md file."""
-        return self.markdown_metadata.get('description', '')
+        return self.markdown_metadata.get("description", "")
 
     @cached_property
     def title(self):
         """Title extracted from the metadata, or defaults to the filename."""
-        title = self.markdown_metadata.get('title', '')
+        title = self.markdown_metadata.get("title", "")
         return title if title else self.basename
 
     @cached_property
     def meta(self):
         """Other metadata extracted from the Markdown <imagename>.md file."""
-        return self.markdown_metadata.get('meta', {})
+        return self.markdown_metadata.get("meta", {})
 
     @cached_property
     def markdown_metadata(self):
@@ -211,11 +211,11 @@ class Media:
 
     @property
     def markdown_metadata_filepath(self):
-        return splitext(self.src_path)[0] + '.md'
+        return splitext(self.src_path)[0] + ".md"
 
     def _get_markdown_metadata(self):
         """Get metadata from filename.md."""
-        meta = {'title': '', 'description': '', 'meta': {}}
+        meta = {"title": "", "description": "", "meta": {}}
         if isfile(self.markdown_metadata_filepath):
             meta.update(read_markdown(self.markdown_metadata_filepath))
         return meta
@@ -232,11 +232,11 @@ class Media:
 class Image(Media):
     """Gather all informations on an image file."""
 
-    type = 'image'
+    type = "image"
 
     def __init__(self, filename, path, settings):
         super().__init__(filename, path, settings)
-        imgformat = settings.get('img_format')
+        imgformat = settings.get("img_format")
 
         # Register all formats
         PILImage.init()
@@ -252,17 +252,17 @@ class Image(Media):
     def date(self):
         """The date from the EXIF DateTimeOriginal metadata if available, or
         from the file date."""
-        return self.exif and self.exif.get('dateobj', None) or self._get_file_date()
+        return self.exif and self.exif.get("dateobj", None) or self._get_file_date()
 
     @cached_property
     def exif(self):
         """If not `None` contains a dict with the most common tags. For more
         information, see :ref:`simple-exif-data`.
         """
-        datetime_format = self.settings['datetime_format']
+        datetime_format = self.settings["datetime_format"]
         return (
             get_exif_tags(self.raw_exif, datetime_format=datetime_format)
-            if self.raw_exif and self.src_ext in ('.jpg', '.jpeg')
+            if self.raw_exif and self.src_ext in (".jpg", ".jpeg")
             else None
         )
 
@@ -277,18 +277,18 @@ class Image(Media):
 
         # If a title or description hasn't been obtained by other means, look
         #  for the information in IPTC fields
-        if not meta['title']:
-            meta['title'] = self.file_metadata['iptc'].get('title', '')
-        if not meta['description']:
-            meta['description'] = self.file_metadata['iptc'].get('description', '')
+        if not meta["title"]:
+            meta["title"] = self.file_metadata["iptc"].get("title", "")
+        if not meta["description"]:
+            meta["description"] = self.file_metadata["iptc"].get("description", "")
 
         return meta
 
     @cached_property
     def raw_exif(self):
         """If not `None`, contains the raw EXIF tags."""
-        if self.src_ext in ('.jpg', '.jpeg'):
-            return self.file_metadata['exif']
+        if self.src_ext in (".jpg", ".jpeg"):
+            return self.file_metadata["exif"]
 
     @cached_property
     def size(self):
@@ -307,20 +307,20 @@ class Image(Media):
 
     def has_location(self):
         """True if location information is available for EXIF GPSInfo."""
-        return self.exif is not None and 'gps' in self.exif
+        return self.exif is not None and "gps" in self.exif
 
 
 class Video(Media):
     """Gather all informations on a video file."""
 
-    type = 'video'
+    type = "video"
 
     def __init__(self, filename, path, settings):
         super().__init__(filename, path, settings)
 
-        if not settings['use_orig'] or not is_valid_html5_video(self.src_ext):
-            video_format = settings['video_format']
-            ext = '.' + video_format
+        if not settings["use_orig"] or not is_valid_html5_video(self.src_ext):
+            video_format = settings["video_format"]
+            ext = "." + video_format
             self.dst_filename = self.basename + ext
             self.mime = get_mime(ext)
         else:
@@ -329,12 +329,12 @@ class Video(Media):
     @cached_property
     def date(self):
         """The date from the Date metadata if available, or from the file date."""
-        if 'date' in self.meta:
+        if "date" in self.meta:
             try:
                 self.logger.debug(
                     "Reading date from image metadata : %s", self.src_filename
                 )
-                return datetime.fromisoformat(self.meta['date'][0])
+                return datetime.fromisoformat(self.meta["date"][0])
             except Exception:
                 self.logger.debug(
                     "Reading date from image metadata failed : %s", self.src_filename
@@ -368,24 +368,24 @@ class Album:
         self.gallery = gallery
         self.settings = settings
         self.subdirs = dirnames
-        self.output_file = settings['output_filename']
+        self.output_file = settings["output_filename"]
         self._thumbnail = None
 
-        if path == '.':
-            self.src_path = settings['source']
-            self.dst_path = settings['destination']
+        if path == ".":
+            self.src_path = settings["source"]
+            self.dst_path = settings["destination"]
         else:
-            self.src_path = join(settings['source'], path)
-            self.dst_path = join(settings['destination'], path)
+            self.src_path = join(settings["source"], path)
+            self.dst_path = join(settings["destination"], path)
 
         self.logger = logging.getLogger(__name__)
 
         # optionally add index.html to the URLs
-        self.url_ext = self.output_file if settings['index_in_url'] else ''
+        self.url_ext = self.output_file if settings["index_in_url"] else ""
 
         self.index_url = (
-            url_from_path(os.path.relpath(settings['destination'], self.dst_path))
-            + '/'
+            url_from_path(os.path.relpath(settings["destination"], self.dst_path))
+            + "/"
             + self.url_ext
         )
 
@@ -397,9 +397,9 @@ class Album:
         for f in filenames:
             ext = splitext(f)[1]
             media = None
-            if ext.lower() in settings['img_extensions']:
+            if ext.lower() in settings["img_extensions"]:
                 media = Image(f, self.path, settings)
-            elif ext.lower() in settings['video_extensions']:
+            elif ext.lower() in settings["video_extensions"]:
                 media = Video(f, self.path, settings)
 
             # Allow modification of the media, including overriding the class
@@ -421,8 +421,8 @@ class Album:
         )
 
     def __str__(self):
-        return f'{self.path} : ' + ', '.join(
-            f'{count} {_type}s' for _type, count in self.medias_count.items()
+        return f"{self.path} : " + ", ".join(
+            f"{count} {_type}s" for _type, count in self.medias_count.items()
         )
 
     def __len__(self):
@@ -434,27 +434,27 @@ class Album:
     @cached_property
     def description(self):
         """Description extracted from the Markdown index.md file."""
-        return self.markdown_metadata.get('description', '')
+        return self.markdown_metadata.get("description", "")
 
     @cached_property
     def title(self):
         """Title extracted from the Markdown index.md file."""
-        title = self.markdown_metadata.get('title', '')
-        path = self.path if self.path != '.' else self.src_path
+        title = self.markdown_metadata.get("title", "")
+        path = self.path if self.path != "." else self.src_path
         return title if title else os.path.basename(path)
 
     @cached_property
     def meta(self):
         """Other metadata extracted from the Markdown index.md file."""
-        return self.markdown_metadata.get('meta', {})
+        return self.markdown_metadata.get("meta", {})
 
     @cached_property
     def author(self):
         """Author extracted from the Markdown index.md file or settings."""
         try:
-            return self.meta['author'][0]
+            return self.meta["author"][0]
         except KeyError:
-            return self.settings.get('author')
+            return self.settings.get("author")
 
     @property
     def markdown_metadata_filepath(self):
@@ -463,7 +463,7 @@ class Album:
     @cached_property
     def markdown_metadata(self):
         """Get metadata from filename.md: title, description, meta."""
-        meta = {'title': '', 'description': '', 'meta': {}}
+        meta = {"title": "", "description": "", "meta": {}}
         if isfile(self.markdown_metadata_filepath):
             meta.update(read_markdown(self.markdown_metadata_filepath))
         return meta
@@ -473,27 +473,27 @@ class Album:
         check_or_create_dir(self.dst_path)
 
         if self.medias:
-            check_or_create_dir(join(self.dst_path, self.settings['thumb_dir']))
+            check_or_create_dir(join(self.dst_path, self.settings["thumb_dir"]))
 
-        if self.medias and self.settings['keep_orig']:
-            self.orig_path = join(self.dst_path, self.settings['orig_dir'])
+        if self.medias and self.settings["keep_orig"]:
+            self.orig_path = join(self.dst_path, self.settings["orig_dir"])
             check_or_create_dir(self.orig_path)
 
     def sort_subdirs(self, albums_sort_attr):
         if self.subdirs:
             if not albums_sort_attr:
-                albums_sort_attr = self.settings['albums_sort_attr']
-            reverse = self.settings['albums_sort_reverse']
+                albums_sort_attr = self.settings["albums_sort_attr"]
+            reverse = self.settings["albums_sort_reverse"]
 
-            if 'sort' in self.meta:
-                albums_sort_attr = self.meta['sort'][0]
-                if albums_sort_attr[0] == '-':
+            if "sort" in self.meta:
+                albums_sort_attr = self.meta["sort"][0]
+                if albums_sort_attr[0] == "-":
                     albums_sort_attr = albums_sort_attr[1:]
                     reverse = True
                 else:
                     reverse = False
 
-            root_path = self.path if self.path != '.' else ''
+            root_path = self.path if self.path != "." else ""
 
             def sort_key(s):
                 sort_attr = albums_sort_attr
@@ -513,7 +513,7 @@ class Album:
                         continue
                     except TypeError:
                         continue
-                return ''
+                return ""
 
             key = natsort_keygen(key=sort_key, alg=ns.LOCALE)
             self.subdirs.sort(key=key, reverse=reverse)
@@ -522,22 +522,22 @@ class Album:
 
     def sort_medias(self, medias_sort_attr):
         if self.medias:
-            if medias_sort_attr == 'filename':
-                medias_sort_attr = 'dst_filename'
+            if medias_sort_attr == "filename":
+                medias_sort_attr = "dst_filename"
 
-            if medias_sort_attr == 'date':
+            if medias_sort_attr == "date":
                 key = lambda s: s.date or datetime.now()
-            elif medias_sort_attr.startswith('meta.'):
+            elif medias_sort_attr.startswith("meta."):
                 meta_key = medias_sort_attr.split(".", 1)[1]
                 key = natsort_keygen(
-                    key=lambda s: s.meta.get(meta_key, [''])[0], alg=ns.LOCALE
+                    key=lambda s: s.meta.get(meta_key, [""])[0], alg=ns.LOCALE
                 )
             else:
                 key = natsort_keygen(
                     key=lambda s: getattr(s, medias_sort_attr), alg=ns.LOCALE
                 )
 
-            self.medias.sort(key=key, reverse=self.settings['medias_sort_reverse'])
+            self.medias.sort(key=key, reverse=self.settings["medias_sort_reverse"])
 
         signals.medias_sorted.send(self)
 
@@ -545,14 +545,14 @@ class Album:
     def images(self):
         """List of images (:class:`~sigal.gallery.Image`)."""
         for media in self.medias:
-            if media.type == 'image':
+            if media.type == "image":
                 yield media
 
     @property
     def videos(self):
         """List of videos (:class:`~sigal.gallery.Video`)."""
         for media in self.medias:
-            if media.type == 'video':
+            if media.type == "video":
                 yield media
 
     @property
@@ -560,7 +560,7 @@ class Album:
         """List of :class:`~sigal.gallery.Album` objects for each
         sub-directory.
         """
-        root_path = self.path if self.path != '.' else ''
+        root_path = self.path if self.path != "." else ""
         return [self.gallery.albums[join(root_path, path)] for path in self.subdirs]
 
     @property
@@ -570,8 +570,8 @@ class Album:
     @property
     def url(self):
         """URL of the album, relative to its parent."""
-        url = self.name.encode('utf-8')
-        return url_quote(url) + '/' + self.url_ext
+        url = self.name.encode("utf-8")
+        return url_quote(url) + "/" + self.url_ext
 
     @property
     def thumbnail(self):
@@ -582,7 +582,7 @@ class Album:
             return self._thumbnail
 
         # Test the thumbnail from the Markdown file.
-        thumbnail = self.meta.get('thumbnail', [''])[0]
+        thumbnail = self.meta.get("thumbnail", [""])[0]
 
         if thumbnail and isfile(join(self.src_path, thumbnail)):
             self._thumbnail = url_from_path(
@@ -594,18 +594,18 @@ class Album:
             # find and return the first landscape image
             for f in self.medias:
                 ext = splitext(f.dst_filename)[1]
-                if ext.lower() not in self.settings['img_extensions']:
+                if ext.lower() not in self.settings["img_extensions"]:
                     continue
 
                 # Use f.size if available as it is quicker (in cache), but
                 # fallback to the size of src_path if dst_path is missing
                 size = f.input_size
                 if size is None:
-                    size = f.file_metadata['size']
+                    size = f.file_metadata["size"]
 
-                if size['width'] > size['height']:
+                if size["width"] > size["height"]:
                     try:
-                        self._thumbnail = url_quote(self.name) + '/' + f.thumbnail
+                        self._thumbnail = url_quote(self.name) + "/" + f.thumbnail
                     except Exception as e:
                         self.logger.info(
                             "Failed to get thumbnail for %s: %s", f.dst_filename, e
@@ -624,7 +624,7 @@ class Album:
                     if media.thumbnail is not None:
                         try:
                             self._thumbnail = (
-                                url_quote(self.name) + '/' + media.thumbnail
+                                url_quote(self.name) + "/" + media.thumbnail
                             )
                         except Exception as e:
                             self.logger.info(
@@ -647,7 +647,7 @@ class Album:
             if not self._thumbnail:
                 for path, album in self.gallery.get_albums(self.path):
                     if album.thumbnail:
-                        self._thumbnail = url_quote(self.name) + '/' + album.thumbnail
+                        self._thumbnail = url_quote(self.name) + "/" + album.thumbnail
                         self.logger.debug(
                             "Using thumbnail from sub-directory for %r : %s",
                             self,
@@ -655,7 +655,7 @@ class Album:
                         )
                         return self._thumbnail
 
-        self.logger.error('Thumbnail not found for %r', self)
+        self.logger.error("Thumbnail not found for %r", self)
 
     @property
     def random_thumbnail(self):
@@ -669,18 +669,18 @@ class Album:
         """List of ``(url, title)`` tuples defining the current breadcrumb
         path.
         """
-        if self.path == '.':
+        if self.path == ".":
             return []
 
         path = self.path
-        breadcrumb = [((self.url_ext or '.'), self.title)]
+        breadcrumb = [((self.url_ext or "."), self.title)]
 
         while True:
-            path = os.path.normpath(os.path.join(path, '..'))
-            if path == '.':
+            path = os.path.normpath(os.path.join(path, ".."))
+            if path == ".":
                 break
 
-            url = url_from_path(os.path.relpath(path, self.path)) + '/' + self.url_ext
+            url = url_from_path(os.path.relpath(path, self.path)) + "/" + self.url_ext
             breadcrumb.append((url, self.gallery.albums[path].title))
 
         breadcrumb.reverse()
@@ -704,17 +704,17 @@ class Gallery:
         self.logger = logging.getLogger(__name__)
         self.stats = defaultdict(int)
         self.init_pool(ncpu)
-        check_or_create_dir(settings['destination'])
+        check_or_create_dir(settings["destination"])
 
-        if settings['max_img_pixels']:
-            PILImage.MAX_IMAGE_PIXELS = settings['max_img_pixels']
+        if settings["max_img_pixels"]:
+            PILImage.MAX_IMAGE_PIXELS = settings["max_img_pixels"]
 
         # Build the list of directories with images
         albums = self.albums = {}
-        src_path = self.settings['source']
+        src_path = self.settings["source"]
 
-        ignore_dirs = settings['ignore_directories']
-        ignore_files = settings['ignore_files']
+        ignore_dirs = settings["ignore_directories"]
+        ignore_files = settings["ignore_files"]
 
         progressChars = cycle(["/", "-", "\\", "|"])
         show_progress = (
@@ -733,7 +733,7 @@ class Gallery:
             if ignore_dirs and any(
                 fnmatch.fnmatch(relpath, ignore) for ignore in ignore_dirs
             ):
-                self.logger.info('Ignoring %s', relpath)
+                self.logger.info("Ignoring %s", relpath)
                 continue
 
             # Remove files that match the ignore_files settings
@@ -742,22 +742,22 @@ class Gallery:
                 for ignore in ignore_files:
                     files_path -= set(fnmatch.filter(files_path, ignore))
 
-                self.logger.debug('Files before filtering: %r', files)
+                self.logger.debug("Files before filtering: %r", files)
                 files = [os.path.split(f)[1] for f in files_path]
-                self.logger.debug('Files after filtering: %r', files)
+                self.logger.debug("Files after filtering: %r", files)
 
             # Remove sub-directories that have been ignored in a previous
             # iteration (as topdown=False, sub-directories are processed before
             # their parent
             for d in dirs[:]:
-                path = join(relpath, d) if relpath != '.' else d
+                path = join(relpath, d) if relpath != "." else d
                 if path not in albums.keys():
                     dirs.remove(d)
 
             album = Album(relpath, settings, dirs, files, self)
 
             if not album.medias and not album.albums:
-                self.logger.info('Skip empty album: %r', album)
+                self.logger.info("Skip empty album: %r", album)
             else:
                 album.create_output_directories()
                 albums[relpath] = album
@@ -771,7 +771,7 @@ class Gallery:
             file=self.progressbar_target,
         ) as progress_albums:
             for album in progress_albums:
-                album.sort_subdirs(settings['albums_sort_attr'])
+                album.sort_subdirs(settings["albums_sort_attr"])
 
         with progressbar(
             albums.values(),
@@ -779,15 +779,15 @@ class Gallery:
             file=self.progressbar_target,
         ) as progress_albums:
             for album in progress_albums:
-                album.sort_medias(settings['medias_sort_attr'])
+                album.sort_medias(settings["medias_sort_attr"])
 
-        self.logger.debug('Albums:\n%r', albums.values())
+        self.logger.debug("Albums:\n%r", albums.values())
         signals.gallery_initialized.send(self)
 
     @property
     def title(self):
         """Title of the gallery."""
-        return self.settings['title'] or self.albums['.'].title
+        return self.settings["title"] or self.albums["."].title
 
     def init_pool(self, ncpu):
         try:
@@ -801,7 +801,7 @@ class Gallery:
             try:
                 ncpu = int(ncpu)
             except ValueError:
-                self.logger.error('ncpu should be an integer value')
+                self.logger.error("ncpu should be an integer value")
                 ncpu = cpu_count
 
         self.logger.info("Using %s cores", ncpu)
@@ -809,7 +809,7 @@ class Gallery:
             self.pool = multiprocessing.Pool(
                 processes=ncpu,
                 initializer=pool_init,
-                initargs=(self.settings['max_img_pixels'],),
+                initargs=(self.settings["max_img_pixels"],),
             )
         else:
             self.pool = None
@@ -850,12 +850,12 @@ class Gallery:
                     f for album in albums for f in self.process_dir(album, force=force)
                 ]
         except KeyboardInterrupt:
-            sys.exit('Interrupted')
+            sys.exit("Interrupted")
 
         bar_opt = {
-            'label': "Processing files",
-            'show_pos': True,
-            'file': self.progressbar_target,
+            "label": "Processing files",
+            "show_pos": True,
+            "file": self.progressbar_target,
         }
 
         if self.pool:
@@ -867,7 +867,7 @@ class Gallery:
                         bar.update(1)
             except KeyboardInterrupt:
                 self.pool.terminate()
-                sys.exit('Interrupted')
+                sys.exit("Interrupted")
             except pickle.PicklingError:
                 self.logger.critical(
                     "Failed to process files with the multiprocessing feature."
@@ -875,7 +875,7 @@ class Gallery:
                     "defined in the settings file, which can't be serialized.",
                     exc_info=True,
                 )
-                sys.exit('Abort')
+                sys.exit("Abort")
             finally:
                 self.pool.close()
                 self.pool.join()
@@ -889,7 +889,7 @@ class Gallery:
             ]
             self.remove_files(failed_files)
 
-        if self.settings['write_html']:
+        if self.settings["write_html"]:
             album_writer = AlbumPageWriter(self.settings, index_title=self.title)
             album_list_writer = AlbumListPageWriter(
                 self.settings, index_title=self.title
@@ -914,23 +914,23 @@ class Gallery:
                         album_list_writer.write(album)
                     else:
                         album_writer.write(album)
-        print('')
+        print("")
 
         signals.gallery_build.send(self)
 
     def remove_files(self, medias):
-        self.logger.error('Some files have failed to be processed:')
+        self.logger.error("Some files have failed to be processed:")
         for media in medias:
-            self.logger.error('  - %s', media.dst_filename)
+            self.logger.error("  - %s", media.dst_filename)
             album = self.albums[media.path]
             for f in album.medias:
                 if f.dst_filename == media.dst_filename:
-                    self.stats[f.type + '_failed'] += 1
+                    self.stats[f.type + "_failed"] += 1
                     album.medias.remove(f)
                     break
         self.logger.error(
             'You can run "sigal build" in verbose (--verbose) or'
-            ' debug (--debug) mode to get more details.'
+            " debug (--debug) mode to get more details."
         )
 
     def process_dir(self, album, force=False):
@@ -938,7 +938,7 @@ class Gallery:
         for f in album:
             if isfile(f.dst_path) and not force:
                 self.logger.info("%s exists - skipping", f.dst_filename)
-                self.stats[f.type + '_skipped'] += 1
+                self.stats[f.type + "_skipped"] += 1
             else:
                 self.stats[f.type] += 1
                 yield f
@@ -951,9 +951,9 @@ def pool_init(max_img_pixels):
 
 def process_file(media):
     processor = None
-    if media.type == 'image':
+    if media.type == "image":
         processor = process_image
-    elif media.type == 'video':
+    elif media.type == "video":
         processor = process_video
 
     # Allow overriding of the processor
@@ -965,7 +965,7 @@ def process_file(media):
     if processor:
         return processor(media)
     else:
-        logging.warning('Processor not found for media %s', media.path)
+        logging.warning("Processor not found for media %s", media.path)
         return Status.FAILURE
 
 
diff --git a/src/sigal/image.py b/src/sigal/image.py
index ac65cc6..c1031ed 100644
--- a/src/sigal/image.py
+++ b/src/sigal/image.py
@@ -57,7 +57,7 @@ ImageFile.LOAD_TRUNCATED_IMAGES = True
 
 
 def _has_exif_tags(img):
-    return hasattr(img, 'info') and 'exif' in img.info
+    return hasattr(img, "info") and "exif" in img.info
 
 
 def _read_image(file_path):
@@ -72,8 +72,8 @@ def _read_image(file_path):
 
     for w in caught_warnings:
         logger.warning(
-            f'PILImage reported a warning for file {file_path}\n'
-            f'{w.category}: {w.message}'
+            f"PILImage reported a warning for file {file_path}\n"
+            f"{w.category}: {w.message}"
         )
     return im
 
@@ -90,14 +90,14 @@ def generate_image(source, outname, settings, options=None):
 
     logger = logging.getLogger(__name__)
 
-    if settings['use_orig'] or source.endswith('.gif'):
-        utils.copy(source, outname, symlink=settings['orig_link'])
+    if settings["use_orig"] or source.endswith(".gif"):
+        utils.copy(source, outname, symlink=settings["orig_link"])
         return
 
     img = _read_image(source)
     original_format = img.format
 
-    if settings['copy_exif_data'] and settings['autorotate_images']:
+    if settings["copy_exif_data"] and settings["autorotate_images"]:
         logger.warning(
             "The 'autorotate_images' and 'copy_exif_data' settings "
             "are not compatible because Sigal can't save the "
@@ -105,30 +105,30 @@ def generate_image(source, outname, settings, options=None):
         )
 
     # Preserve EXIF data
-    if settings['copy_exif_data'] and _has_exif_tags(img):
+    if settings["copy_exif_data"] and _has_exif_tags(img):
         if options is not None:
             options = deepcopy(options)
         else:
             options = {}
-        options['exif'] = img.info['exif']
+        options["exif"] = img.info["exif"]
 
     # Rotate the img, and catch IOError when PIL fails to read EXIF
-    if settings['autorotate_images']:
+    if settings["autorotate_images"]:
         try:
             img = Transpose().process(img)
         except (OSError, IndexError):
             pass
 
     # Resize the image
-    if settings['img_processor']:
+    if settings["img_processor"]:
         try:
-            logger.debug('Processor: %s', settings['img_processor'])
-            processor_cls = getattr(pilkit.processors, settings['img_processor'])
+            logger.debug("Processor: %s", settings["img_processor"])
+            processor_cls = getattr(pilkit.processors, settings["img_processor"])
         except AttributeError:
-            logger.error('Wrong processor name: %s', settings['img_processor'])
+            logger.error("Wrong processor name: %s", settings["img_processor"])
             sys.exit()
 
-        width, height = settings['img_size']
+        width, height = settings["img_size"]
 
         if img.size[0] < img.size[1]:
             # swap target size if image is in portrait mode
@@ -144,9 +144,9 @@ def generate_image(source, outname, settings, options=None):
 
     # first, use hard-coded output format, or PIL format, or original image
     # format, or fall back to JPEG
-    outformat = settings.get('img_format') or img.format or original_format or 'JPEG'
+    outformat = settings.get("img_format") or img.format or original_format or "JPEG"
 
-    logger.debug('Save resized image to %s (%s)', outname, outformat)
+    logger.debug("Save resized image to %s (%s)", outname, outformat)
     save_image(img, outname, outformat, options=options, autoconvert=True)
 
 
@@ -171,8 +171,8 @@ def generate_thumbnail(
     else:
         img.thumbnail(box, method)
 
-    outformat = img.format or original_format or 'JPEG'
-    logger.debug('Save thumnail image: %s (%s)', outname, outformat)
+    outformat = img.format or original_format or "JPEG"
+    logger.debug("Save thumnail image: %s (%s)", outname, outformat)
     save_image(img, outname, outformat, options=options, autoconvert=True)
 
 
@@ -180,24 +180,24 @@ def process_image(media):
     """Process one image: resize, create thumbnail."""
 
     logger = logging.getLogger(__name__)
-    logger.info('Processing %s', media.src_path)
+    logger.info("Processing %s", media.src_path)
 
-    if media.src_ext in ('.jpg', '.jpeg', '.JPG', '.JPEG'):
-        options = media.settings['jpg_options']
-    elif media.src_ext == '.png':
-        options = {'optimize': True}
+    if media.src_ext in (".jpg", ".jpeg", ".JPG", ".JPEG"):
+        options = media.settings["jpg_options"]
+    elif media.src_ext == ".png":
+        options = {"optimize": True}
     else:
         options = {}
 
     with utils.raise_if_debug() as status:
         generate_image(media.src_path, media.dst_path, media.settings, options=options)
 
-        if media.settings['make_thumbs']:
+        if media.settings["make_thumbs"]:
             generate_thumbnail(
                 media.dst_path,
                 media.thumb_path,
-                media.settings['thumb_size'],
-                fit=media.settings['thumb_fit'],
+                media.settings["thumb_size"],
+                fit=media.settings["thumb_fit"],
                 options=options,
                 thumb_fit_centering=media.settings["thumb_fit_centering"],
             )
@@ -214,7 +214,7 @@ def get_size(file_path):
         logger.error("Could not read size of %s due to %r", file_path, e)
     else:
         width, height = im.size
-        return {'width': width, 'height': height}
+        return {"width": width, "height": height}
 
 
 def get_exif_data(filename):
@@ -228,25 +228,25 @@ def get_exif_data(filename):
         with warnings.catch_warnings(record=True) as caught_warnings:
             exif = img._getexif() or {}
     except ZeroDivisionError:
-        logger.warning('Failed to read EXIF data.')
+        logger.warning("Failed to read EXIF data.")
         return None
 
     for w in caught_warnings:
         fname = filename.filename if isinstance(filename, PILImage.Image) else filename
         logger.warning(
-            f'PILImage reported a warning for file {fname}\n{w.category}: {w.message}'
+            f"PILImage reported a warning for file {fname}\n{w.category}: {w.message}"
         )
 
     data = {TAGS.get(tag, tag): value for tag, value in exif.items()}
 
-    if 'GPSInfo' in data:
+    if "GPSInfo" in data:
         try:
-            data['GPSInfo'] = {
-                GPSTAGS.get(tag, tag): value for tag, value in data['GPSInfo'].items()
+            data["GPSInfo"] = {
+                GPSTAGS.get(tag, tag): value for tag, value in data["GPSInfo"].items()
             }
         except AttributeError:
-            logger.info('Failed to get GPS Info')
-            del data['GPSInfo']
+            logger.info("Failed to get GPS Info")
+            del data["GPSInfo"]
     return data
 
 
@@ -266,21 +266,21 @@ def get_iptc_data(filename):
         img = _read_image(filename)
         raw_iptc = IptcImagePlugin.getiptcinfo(img)
     except SyntaxError:
-        logger.info('IPTC Error in %s', filename)
+        logger.info("IPTC Error in %s", filename)
 
     # IPTC fields are catalogued in:
     # https://www.iptc.org/std/photometadata/specification/IPTC-PhotoMetadata
     # 2:05 is the IPTC title property
     if raw_iptc and (2, 5) in raw_iptc:
-        iptc_data["title"] = raw_iptc[(2, 5)].decode('utf-8', errors='replace')
+        iptc_data["title"] = raw_iptc[(2, 5)].decode("utf-8", errors="replace")
 
     # 2:120 is the IPTC description property
     if raw_iptc and (2, 120) in raw_iptc:
-        iptc_data["description"] = raw_iptc[(2, 120)].decode('utf-8', errors='replace')
+        iptc_data["description"] = raw_iptc[(2, 120)].decode("utf-8", errors="replace")
 
     # 2:105 is the IPTC headline property
     if raw_iptc and (2, 105) in raw_iptc:
-        iptc_data["headline"] = raw_iptc[(2, 105)].decode('utf-8', errors='replace')
+        iptc_data["headline"] = raw_iptc[(2, 105)].decode("utf-8", errors="replace")
 
     return iptc_data
 
@@ -292,25 +292,25 @@ def get_image_metadata(filename):
     try:
         img = _read_image(filename)
     except Exception as e:
-        logger.error('Could not open image %s metadata: %s', filename, e)
+        logger.error("Could not open image %s metadata: %s", filename, e)
     else:
         try:
-            if os.path.splitext(filename)[1].lower() in ('.jpg', '.jpeg'):
+            if os.path.splitext(filename)[1].lower() in (".jpg", ".jpeg"):
                 exif = get_exif_data(img)
         except Exception as e:
-            logger.warning('Could not read EXIF data from %s: %s', filename, e)
+            logger.warning("Could not read EXIF data from %s: %s", filename, e)
 
         try:
             iptc = get_iptc_data(img)
         except Exception as e:
-            logger.warning('Could not read IPTC data from %s: %s', filename, e)
+            logger.warning("Could not read IPTC data from %s: %s", filename, e)
 
         try:
             size = get_size(img)
         except Exception as e:
-            logger.warning('Could not read size from %s: %s', filename, e)
+            logger.warning("Could not read size from %s: %s", filename, e)
 
-    return {'exif': exif, 'iptc': iptc, 'size': size}
+    return {"exif": exif, "iptc": iptc, "size": size}
 
 
 def dms_to_degrees(v):
@@ -327,81 +327,81 @@ def dms_to_degrees(v):
     return d + (m / 60.0) + (s / 3600.0)
 
 
-def get_exif_tags(data, datetime_format='%c'):
+def get_exif_tags(data, datetime_format="%c"):
     """Make a simplified version with common tags from raw EXIF data."""
 
     logger = logging.getLogger(__name__)
     simple = {}
 
-    for tag in ('Model', 'Make', 'LensModel'):
+    for tag in ("Model", "Make", "LensModel"):
         if tag in data:
             val = data[tag][0] if isinstance(data[tag], tuple) else data[tag]
             simple[tag] = str(val).strip()
 
-    if 'FNumber' in data:
-        fnumber = data['FNumber']
+    if "FNumber" in data:
+        fnumber = data["FNumber"]
         try:
             if IFDRational and isinstance(fnumber, IFDRational):
-                simple['fstop'] = float(fnumber)
+                simple["fstop"] = float(fnumber)
             else:
-                simple['fstop'] = float(fnumber[0]) / fnumber[1]
+                simple["fstop"] = float(fnumber[0]) / fnumber[1]
         except Exception:
-            logger.debug('Skipped invalid FNumber: %r', fnumber, exc_info=True)
+            logger.debug("Skipped invalid FNumber: %r", fnumber, exc_info=True)
 
-    if 'FocalLength' in data:
-        focal = data['FocalLength']
+    if "FocalLength" in data:
+        focal = data["FocalLength"]
         try:
             if IFDRational and isinstance(focal, IFDRational):
-                simple['focal'] = round(float(focal))
+                simple["focal"] = round(float(focal))
             else:
-                simple['focal'] = round(float(focal[0]) / focal[1])
+                simple["focal"] = round(float(focal[0]) / focal[1])
         except Exception:
-            logger.debug('Skipped invalid FocalLength: %r', focal, exc_info=True)
+            logger.debug("Skipped invalid FocalLength: %r", focal, exc_info=True)
 
-    if 'ExposureTime' in data:
-        exptime = data['ExposureTime']
+    if "ExposureTime" in data:
+        exptime = data["ExposureTime"]
         if IFDRational and isinstance(exptime, IFDRational):
-            simple['exposure'] = f'{exptime.numerator}/{exptime.denominator}'
+            simple["exposure"] = f"{exptime.numerator}/{exptime.denominator}"
         elif isinstance(exptime, tuple):
             try:
-                simple['exposure'] = str(fractions.Fraction(exptime[0], exptime[1]))
+                simple["exposure"] = str(fractions.Fraction(exptime[0], exptime[1]))
             except ZeroDivisionError:
-                logger.info('Invalid ExposureTime: %r', exptime)
+                logger.info("Invalid ExposureTime: %r", exptime)
         elif isinstance(exptime, int):
-            simple['exposure'] = str(exptime)
+            simple["exposure"] = str(exptime)
         else:
-            logger.info('Unknown format for ExposureTime: %r', exptime)
+            logger.info("Unknown format for ExposureTime: %r", exptime)
 
-    if data.get('ISOSpeedRatings'):
-        simple['iso'] = data['ISOSpeedRatings']
+    if data.get("ISOSpeedRatings"):
+        simple["iso"] = data["ISOSpeedRatings"]
 
-    if 'DateTimeOriginal' in data:
+    if "DateTimeOriginal" in data:
         # Remove null bytes at the end if necessary
-        date = data['DateTimeOriginal'].rsplit('\x00')[0]
+        date = data["DateTimeOriginal"].rsplit("\x00")[0]
 
         try:
-            simple['dateobj'] = datetime.strptime(date, '%Y:%m:%d %H:%M:%S')
-            simple['datetime'] = simple['dateobj'].strftime(datetime_format)
+            simple["dateobj"] = datetime.strptime(date, "%Y:%m:%d %H:%M:%S")
+            simple["datetime"] = simple["dateobj"].strftime(datetime_format)
         except (ValueError, TypeError) as e:
-            logger.info('Could not parse DateTimeOriginal: %s', e)
+            logger.info("Could not parse DateTimeOriginal: %s", e)
 
-    if 'GPSInfo' in data:
-        info = data['GPSInfo']
-        lat_info = info.get('GPSLatitude')
-        lon_info = info.get('GPSLongitude')
-        lat_ref_info = info.get('GPSLatitudeRef')
-        lon_ref_info = info.get('GPSLongitudeRef')
+    if "GPSInfo" in data:
+        info = data["GPSInfo"]
+        lat_info = info.get("GPSLatitude")
+        lon_info = info.get("GPSLongitude")
+        lat_ref_info = info.get("GPSLatitudeRef")
+        lon_ref_info = info.get("GPSLongitudeRef")
 
         if lat_info and lon_info and lat_ref_info and lon_ref_info:
             try:
                 lat = dms_to_degrees(lat_info)
                 lon = dms_to_degrees(lon_info)
             except (ZeroDivisionError, ValueError, TypeError):
-                logger.info('Failed to read GPS info')
+                logger.info("Failed to read GPS info")
             else:
-                simple['gps'] = {
-                    'lat': -lat if lat_ref_info != 'N' else lat,
-                    'lon': -lon if lon_ref_info != 'E' else lon,
+                simple["gps"] = {
+                    "lat": -lat if lat_ref_info != "N" else lat,
+                    "lon": -lon if lon_ref_info != "E" else lon,
                 }
 
     return simple
diff --git a/src/sigal/log.py b/src/sigal/log.py
index 8938549..4ef678a 100644
--- a/src/sigal/log.py
+++ b/src/sigal/log.py
@@ -28,11 +28,11 @@ from logging import Formatter
 BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = (30 + i for i in range(8))
 
 COLORS = {
-    'DEBUG': BLUE,
-    'INFO': GREEN,
-    'WARNING': YELLOW,
-    'ERROR': RED,
-    'CRITICAL': MAGENTA,
+    "DEBUG": BLUE,
+    "INFO": GREEN,
+    "WARNING": YELLOW,
+    "ERROR": RED,
+    "CRITICAL": MAGENTA,
 }
 
 # These are the sequences need to get colored ouput
@@ -48,7 +48,7 @@ def colored(text, color):
 class ColoredFormatter(Formatter):
     def format(self, record):
         level = record.levelname
-        return colored(level, COLORS[level]) + ': ' + record.getMessage()
+        return colored(level, COLORS[level]) + ": " + record.getMessage()
 
 
 def init_logging(name, level=logging.INFO):
@@ -61,15 +61,15 @@ def init_logging(name, level=logging.INFO):
     logger.setLevel(level)
 
     try:
-        if os.isatty(sys.stdout.fileno()) and not sys.platform.startswith('win'):
+        if os.isatty(sys.stdout.fileno()) and not sys.platform.startswith("win"):
             formatter = ColoredFormatter()
         elif level == logging.DEBUG:
-            formatter = Formatter('%(levelname)s - %(message)s')
+            formatter = Formatter("%(levelname)s - %(message)s")
         else:
-            formatter = Formatter('%(message)s')
+            formatter = Formatter("%(message)s")
     except Exception:
         # This fails when running tests with click (test_build)
-        formatter = Formatter('%(message)s')
+        formatter = Formatter("%(message)s")
 
     handler = logging.StreamHandler()
     handler.setFormatter(formatter)
diff --git a/src/sigal/plugins/adjust.py b/src/sigal/plugins/adjust.py
index 8202841..91b97de 100644
--- a/src/sigal/plugins/adjust.py
+++ b/src/sigal/plugins/adjust.py
@@ -26,12 +26,12 @@ logger = logging.getLogger(__name__)
 
 
 def adjust(img, settings=None):
-    logger.debug('Adjust image %r', img)
-    return Adjust(**settings['adjust_options']).process(img)
+    logger.debug("Adjust image %r", img)
+    return Adjust(**settings["adjust_options"]).process(img)
 
 
 def register(settings):
-    if settings.get('adjust_options'):
+    if settings.get("adjust_options"):
         signals.img_resized.connect(adjust)
     else:
-        logger.warning('Adjust options are not set')
+        logger.warning("Adjust options are not set")
diff --git a/src/sigal/plugins/compress_assets.py b/src/sigal/plugins/compress_assets.py
index 53f481c..226cace 100644
--- a/src/sigal/plugins/compress_assets.py
+++ b/src/sigal/plugins/compress_assets.py
@@ -39,8 +39,8 @@ from sigal import signals
 logger = logging.getLogger(__name__)
 
 DEFAULT_SETTINGS = {
-    'suffixes': ['htm', 'html', 'css', 'js', 'svg'],
-    'method': 'gzip',
+    "suffixes": ["htm", "html", "css", "js", "svg"],
+    "method": "gzip",
 }
 
 
@@ -49,7 +49,7 @@ class BaseCompressor:
 
     def __init__(self, settings):
         self.suffixes_to_compress = settings.get(
-            'suffixes', DEFAULT_SETTINGS['suffixes']
+            "suffixes", DEFAULT_SETTINGS["suffixes"]
         )
 
     def do_compress(self, filename, compressed_filename):
@@ -85,7 +85,7 @@ class BaseCompressor:
 
         file_stats = None
         compressed_stats = None
-        compressed_filename = f'{filename}.{self.suffix}'
+        compressed_filename = f"{filename}.{self.suffix}"
         try:
             file_stats = os.stat(filename)
             compressed_stats = os.stat(compressed_filename)
@@ -103,63 +103,63 @@ class BaseCompressor:
 
 
 class GZipCompressor(BaseCompressor):
-    suffix = 'gz'
+    suffix = "gz"
 
     def do_compress(self, filename, compressed_filename):
-        with open(filename, 'rb') as f_in, gzip.open(
-            compressed_filename, 'wb'
+        with open(filename, "rb") as f_in, gzip.open(
+            compressed_filename, "wb"
         ) as f_out:
             shutil.copyfileobj(f_in, f_out)
 
 
 class ZopfliCompressor(BaseCompressor):
-    suffix = 'gz'
+    suffix = "gz"
 
     def do_compress(self, filename, compressed_filename):
         import zopfli.gzip
 
-        with open(filename, 'rb') as f_in, open(compressed_filename, 'wb') as f_out:
+        with open(filename, "rb") as f_in, open(compressed_filename, "wb") as f_out:
             f_out.write(zopfli.gzip.compress(f_in.read()))
 
 
 class BrotliCompressor(BaseCompressor):
-    suffix = 'br'
+    suffix = "br"
 
     def do_compress(self, filename, compressed_filename):
         import brotli
 
-        with open(filename, 'rb') as f_in, open(compressed_filename, 'wb') as f_out:
+        with open(filename, "rb") as f_in, open(compressed_filename, "wb") as f_out:
             f_out.write(brotli.compress(f_in.read(), mode=brotli.MODE_TEXT))
 
 
 def get_compressor(settings):
-    name = settings.get('method', DEFAULT_SETTINGS['method'])
-    if name == 'gzip':
+    name = settings.get("method", DEFAULT_SETTINGS["method"])
+    if name == "gzip":
         return GZipCompressor(settings)
-    elif name == 'zopfli':
+    elif name == "zopfli":
         try:
             import zopfli.gzip  # noqa
 
             return ZopfliCompressor(settings)
         except ImportError:
-            logging.error('Unable to import zopfli module')
+            logging.error("Unable to import zopfli module")
 
-    elif name == 'brotli':
+    elif name == "brotli":
         try:
             import brotli  # noqa
 
             return BrotliCompressor(settings)
         except ImportError:
-            logger.error('Unable to import brotli module')
+            logger.error("Unable to import brotli module")
 
     else:
-        logger.error(f'No such compressor {name}')
+        logger.error(f"No such compressor {name}")
 
 
 def compress_gallery(gallery):
-    logging.info('Compressing assets for %s', gallery.title)
+    logging.info("Compressing assets for %s", gallery.title)
     compress_settings = gallery.settings.get(
-        'compress_assets_options', DEFAULT_SETTINGS
+        "compress_assets_options", DEFAULT_SETTINGS
     )
     compressor = get_compressor(compress_settings)
 
@@ -169,13 +169,13 @@ def compress_gallery(gallery):
     # Collecting theme assets
     theme_assets = []
     for current_directory, _, filenames in os.walk(
-        os.path.join(gallery.settings['destination'], 'static')
+        os.path.join(gallery.settings["destination"], "static")
     ):
         for filename in filenames:
             theme_assets.append(os.path.join(current_directory, filename))
 
     with progressbar(
-        length=len(gallery.albums) + len(theme_assets), label='Compressing static files'
+        length=len(gallery.albums) + len(theme_assets), label="Compressing static files"
     ) as bar:
         for album in gallery.albums.values():
             compressor.compress(os.path.join(album.dst_path, album.output_file))
@@ -187,5 +187,5 @@ def compress_gallery(gallery):
 
 
 def register(settings):
-    if settings['write_html']:
+    if settings["write_html"]:
         signals.gallery_build.connect(compress_gallery)
diff --git a/src/sigal/plugins/copyright.py b/src/sigal/plugins/copyright.py
index ac4fff8..6c8c5b7 100644
--- a/src/sigal/plugins/copyright.py
+++ b/src/sigal/plugins/copyright.py
@@ -25,13 +25,13 @@ logger = logging.getLogger(__name__)
 
 
 def add_copyright(img, settings=None):
-    logger.debug('Adding copyright to %r', img)
+    logger.debug("Adding copyright to %r", img)
     draw = ImageDraw.Draw(img)
-    text = settings['copyright']
-    font = settings.get('copyright_text_font', None)
-    font_size = settings.get('copyright_text_font_size', 10)
+    text = settings["copyright"]
+    font = settings.get("copyright_text_font", None)
+    font_size = settings.get("copyright_text_font_size", 10)
     assert font_size >= 0
-    color = settings.get('copyright_text_color', (0, 0, 0))
+    color = settings.get("copyright_text_color", (0, 0, 0))
     bottom_margin = 3  # bottom margin for text
     text_height = bottom_margin + 12  # default text height (of 15)
     if font:
@@ -43,13 +43,13 @@ def add_copyright(img, settings=None):
             font = ImageFont.load_default()
     else:
         font = ImageFont.load_default()
-    left, top = settings.get('copyright_text_position', (5, img.size[1] - text_height))
+    left, top = settings.get("copyright_text_position", (5, img.size[1] - text_height))
     draw.text((left, top), text, fill=color, font=font)
     return img
 
 
 def register(settings):
-    if settings.get('copyright'):
+    if settings.get("copyright"):
         signals.img_resized.connect(add_copyright)
     else:
-        logger.warning('Copyright text is not set')
+        logger.warning("Copyright text is not set")
diff --git a/src/sigal/plugins/encrypt/encrypt.py b/src/sigal/plugins/encrypt/encrypt.py
index b2d8f14..a3a5a9f 100644
--- a/src/sigal/plugins/encrypt/encrypt.py
+++ b/src/sigal/plugins/encrypt/encrypt.py
@@ -37,7 +37,7 @@ from .endec import encrypt, kdf_gen_key
 logger = logging.getLogger(__name__)
 
 ASSETS_PATH = os.path.normpath(
-    os.path.join(os.path.abspath(os.path.dirname(__file__)), 'static')
+    os.path.join(os.path.abspath(os.path.dirname(__file__)), "static")
 )
 
 
@@ -62,7 +62,7 @@ def get_options(settings, cache):
     except KeyError:
         options = settings["encrypt_options"]
 
-    table = str.maketrans({'"': r'\"', '\\': r'\\'})
+    table = str.maketrans({'"': r"\"", "\\": r"\\"})
     if (
         "password" not in settings["encrypt_options"]
         or len(settings["encrypt_options"]["password"]) == 0
@@ -227,7 +227,7 @@ def encrypt_files(settings, config, cache, albums, progressbar_target):
                     save_cache(settings, cache)
                     raise Abort
 
-    key_check_path = os.path.join(settings["destination"], 'static', 'keycheck.txt')
+    key_check_path = os.path.join(settings["destination"], "static", "keycheck.txt")
     encrypt_file("keycheck.txt", key_check_path, key, gcm_tag)
 
 
@@ -251,7 +251,7 @@ def encrypt_file(filename, full_path, key, gcm_tag):
 
 
 def copy_assets(settings):
-    theme_path = os.path.join(settings["destination"], 'static')
+    theme_path = os.path.join(settings["destination"], "static")
     copy(
         os.path.join(ASSETS_PATH, "decrypt.js"),
         theme_path,
@@ -273,8 +273,8 @@ def copy_assets(settings):
 
 
 def inject_scripts(context):
-    cache = load_cache(context['settings'])
-    context["encrypt_options"] = get_options(context['settings'], cache)
+    cache = load_cache(context["settings"])
+    context["encrypt_options"] = get_options(context["settings"], cache)
 
 
 def register(settings):
diff --git a/src/sigal/plugins/extended_caching.py b/src/sigal/plugins/extended_caching.py
index 951351c..54682a0 100644
--- a/src/sigal/plugins/extended_caching.py
+++ b/src/sigal/plugins/extended_caching.py
@@ -45,7 +45,7 @@ def load_metadata(album):
     cache = album.gallery.metadataCache
 
     # load album metadata
-    key = os.path.join(album.path, '_index')
+    key = os.path.join(album.path, "_index")
     if key in cache:
         data = cache[key]
 
@@ -55,10 +55,10 @@ def load_metadata(album):
         except FileNotFoundError:
             pass
         else:
-            if data.get('mod_date', -1) >= mod_date:
+            if data.get("mod_date", -1) >= mod_date:
                 # cache is good
-                if 'markdown_metadata' in data:
-                    album.markdown_metadata = data['markdown_metadata']
+                if "markdown_metadata" in data:
+                    album.markdown_metadata = data["markdown_metadata"]
 
     # load media metadata
     for media in album.medias:
@@ -71,23 +71,23 @@ def load_metadata(album):
                 mod_date = int(get_mod_date(media.src_path))
             except FileNotFoundError:
                 continue
-            if data.get('mod_date', -1) < mod_date:
+            if data.get("mod_date", -1) < mod_date:
                 continue  # file_metadata needs updating
 
-            if 'file_metadata' in data:
-                media.file_metadata = data['file_metadata']
-            if 'exif' in data:
-                media.exif = data['exif']
+            if "file_metadata" in data:
+                media.file_metadata = data["file_metadata"]
+            if "exif" in data:
+                media.exif = data["exif"]
 
             try:
                 mod_date = int(get_mod_date(media.markdown_metadata_filepath))
             except FileNotFoundError:
                 continue
-            if data.get('meta_mod_date', -1) < mod_date:
+            if data.get("meta_mod_date", -1) < mod_date:
                 continue  # markdown_metadata needs updating
 
-            if 'markdown_metadata' in data:
-                media.markdown_metadata = data['markdown_metadata']
+            if "markdown_metadata" in data:
+                media.markdown_metadata = data["markdown_metadata"]
 
 
 def _restore_cache(gallery):
@@ -116,10 +116,10 @@ def save_cache(gallery):
     for album in gallery.albums.values():
         try:
             data = {
-                'mod_date': int(get_mod_date(album.markdown_metadata_filepath)),
-                'markdown_metadata': album.markdown_metadata,
+                "mod_date": int(get_mod_date(album.markdown_metadata_filepath)),
+                "markdown_metadata": album.markdown_metadata,
             }
-            cache[os.path.join(album.path, '_index')] = data
+            cache[os.path.join(album.path, "_index")] = data
         except FileNotFoundError:
             pass
 
@@ -130,18 +130,18 @@ def save_cache(gallery):
             except FileNotFoundError:
                 continue
             else:
-                data['mod_date'] = mod_date
-                data['file_metadata'] = media.file_metadata
-                if hasattr(media, 'exif'):
-                    data['exif'] = media.exif
+                data["mod_date"] = mod_date
+                data["file_metadata"] = media.file_metadata
+                if hasattr(media, "exif"):
+                    data["exif"] = media.exif
 
             try:
                 meta_mod_date = int(get_mod_date(media.markdown_metadata_filepath))
             except FileNotFoundError:
                 pass
             else:
-                data['meta_mod_date'] = meta_mod_date
-                data['markdown_metadata'] = media.markdown_metadata
+                data["meta_mod_date"] = meta_mod_date
+                data["markdown_metadata"] = media.markdown_metadata
 
             cache[os.path.join(media.path, media.dst_filename)] = data
 
diff --git a/src/sigal/plugins/feeds.py b/src/sigal/plugins/feeds.py
index 8f5fe2e..f3625ba 100644
--- a/src/sigal/plugins/feeds.py
+++ b/src/sigal/plugins/feeds.py
@@ -38,34 +38,34 @@ def generate_feeds(gallery):
     medias.sort(key=lambda m: m.date, reverse=True)
 
     settings = gallery.settings
-    if settings.get('rss_feed'):
-        generate_feed(gallery, medias, feed_type='rss', **settings['rss_feed'])
-    if settings.get('atom_feed'):
-        generate_feed(gallery, medias, feed_type='atom', **settings['atom_feed'])
+    if settings.get("rss_feed"):
+        generate_feed(gallery, medias, feed_type="rss", **settings["rss_feed"])
+    if settings.get("atom_feed"):
+        generate_feed(gallery, medias, feed_type="atom", **settings["atom_feed"])
 
 
-def generate_feed(gallery, medias, feed_type=None, feed_url='', nb_items=0):
+def generate_feed(gallery, medias, feed_type=None, feed_url="", nb_items=0):
     from feedgenerator import Atom1Feed, Rss201rev2Feed
 
-    root_album = gallery.albums['.']
-    cls = Rss201rev2Feed if feed_type == 'rss' else Atom1Feed
+    root_album = gallery.albums["."]
+    cls = Rss201rev2Feed if feed_type == "rss" else Atom1Feed
     feed = cls(
         title=Markup.escape(root_album.title),
-        link='/',
+        link="/",
         feed_url=feed_url,
         description=Markup.escape(root_album.description).striptags(),
     )
 
-    theme = gallery.settings['theme']
+    theme = gallery.settings["theme"]
     nb_medias = len(medias)
     nb_items = min(nb_items, nb_medias) if nb_items > 0 else nb_medias
-    base_url = feed_url.rsplit('/', maxsplit=1)[0]
+    base_url = feed_url.rsplit("/", maxsplit=1)[0]
 
     for item in medias[:nb_items]:
-        if theme == 'galleria':
-            link = f'{base_url}/{item.path}/#{item.url}'
+        if theme == "galleria":
+            link = f"{base_url}/{item.path}/#{item.url}"
         else:
-            link = f'{base_url}/{item.path}/'
+            link = f"{base_url}/{item.path}/"
 
         feed.add_item(
             title=Markup.escape(item.title or item.url),
@@ -77,14 +77,14 @@ def generate_feed(gallery, medias, feed_type=None, feed_url='', nb_items=0):
                 base_url, item.path, item.thumbnail
             ),
             # categories=item.tags if hasattr(item, 'tags') else None,
-            author_name=getattr(item, 'author', ''),
+            author_name=getattr(item, "author", ""),
             pubdate=item.date or datetime.now(),
         )
 
-    output_file = os.path.join(root_album.dst_path, feed_url.split('/')[-1])
-    logger.info('Generate %s feeds: %s', feed_type.upper(), output_file)
-    with open(output_file, 'w', encoding='utf8') as f:
-        feed.write(f, 'utf-8')
+    output_file = os.path.join(root_album.dst_path, feed_url.split("/")[-1])
+    logger.info("Generate %s feeds: %s", feed_type.upper(), output_file)
+    with open(output_file, "w", encoding="utf8") as f:
+        feed.write(f, "utf-8")
 
 
 def register(settings):
diff --git a/src/sigal/plugins/nonmedia_files.py b/src/sigal/plugins/nonmedia_files.py
index 6dfb043..b263af9 100644
--- a/src/sigal/plugins/nonmedia_files.py
+++ b/src/sigal/plugins/nonmedia_files.py
@@ -37,37 +37,37 @@ logger = logging.getLogger(__name__)
 
 
 DEFAULT_CONFIG = {
-    'ext_as_thumb': True,
-    'ignore_ext': ['.md'],
-    'thumb_bg_color': (255, 255, 255),
-    'thumb_font': None,
-    'thumb_font_color': (0, 0, 0),
-    'thumb_font_size': 40,
+    "ext_as_thumb": True,
+    "ignore_ext": [".md"],
+    "thumb_bg_color": (255, 255, 255),
+    "thumb_font": None,
+    "thumb_font_color": (0, 0, 0),
+    "thumb_font_size": 40,
 }
 
 
 COMMON_MIME_TYPES = {
-    '.azw': 'application/vnd.amazon.ebook',
-    '.csv': 'text/csv',
-    '.epub': 'application/epub+zip',
-    '.pdf': 'application/pdf',
-    '.svg': 'image/svg+xml',
-    '.txt': 'text/plain',
-    '.zip': 'application/zip',
+    ".azw": "application/vnd.amazon.ebook",
+    ".csv": "text/csv",
+    ".epub": "application/epub+zip",
+    ".pdf": "application/pdf",
+    ".svg": "image/svg+xml",
+    ".txt": "text/plain",
+    ".zip": "application/zip",
 }
 
 
 class NonMedia(Media):
     """Gather all informations on a non-media file."""
 
-    type = 'nonmedia'
+    type = "nonmedia"
 
     def __init__(self, filename, path, settings):
         super().__init__(filename, path, settings)
-        self.thumb_name = os.path.splitext(self.thumb_name)[0] + '.jpg'
+        self.thumb_name = os.path.splitext(self.thumb_name)[0] + ".jpg"
         self.date = self._get_file_date()
-        self.mime = COMMON_MIME_TYPES.get(self.src_ext, 'application/octet-stream')
-        logger.debug('mime type %s', self.mime)
+        self.mime = COMMON_MIME_TYPES.get(self.src_ext, "application/octet-stream")
+        logger.debug("mime type %s", self.mime)
 
     @property
     def thumbnail(self):
@@ -81,55 +81,55 @@ def generate_thumbnail(
     text,
     outname,
     box,
-    bg_color=DEFAULT_CONFIG['thumb_bg_color'],
-    font=DEFAULT_CONFIG['thumb_font'],
-    font_color=DEFAULT_CONFIG['thumb_font_color'],
-    font_size=DEFAULT_CONFIG['thumb_font_size'],
+    bg_color=DEFAULT_CONFIG["thumb_bg_color"],
+    font=DEFAULT_CONFIG["thumb_font"],
+    font_color=DEFAULT_CONFIG["thumb_font_color"],
+    font_size=DEFAULT_CONFIG["thumb_font_size"],
     options=None,
 ):
     """Create a thumbnail image."""
 
     kwargs = {}
     if font:
-        kwargs['font'] = ImageFont.truetype(font, font_size)
+        kwargs["font"] = ImageFont.truetype(font, font_size)
     if font_color:
-        kwargs['fill'] = font_color
+        kwargs["fill"] = font_color
 
     img = PILImage.new("RGB", box, bg_color)
 
     anchor = (box[0] // 2, box[1] // 2)
     d = ImageDraw.Draw(img)
     logger.info(f"kwargs: {kwargs}")
-    d.text(anchor, text, anchor='mm', **kwargs)
+    d.text(anchor, text, anchor="mm", **kwargs)
 
-    outformat = 'JPEG'
-    logger.info('Save thumnail image: %s (%s)', outname, outformat)
+    outformat = "JPEG"
+    logger.info("Save thumnail image: %s (%s)", outname, outformat)
     save_image(img, outname, outformat, options=options, autoconvert=True)
 
 
 def process_thumb(media):
     settings = media.settings
-    plugin_settings = settings.get('nonmedia_files_options', {})
-    utils.copy(media.src_path, media.dst_path, symlink=settings['orig_link'])
+    plugin_settings = settings.get("nonmedia_files_options", {})
+    utils.copy(media.src_path, media.dst_path, symlink=settings["orig_link"])
 
-    if plugin_settings.get('ext_as_thumb', DEFAULT_CONFIG['ext_as_thumb']):
-        logger.info('plugin_settings: %r', plugin_settings)
+    if plugin_settings.get("ext_as_thumb", DEFAULT_CONFIG["ext_as_thumb"]):
+        logger.info("plugin_settings: %r", plugin_settings)
         kwargs = {}
-        for key in ('bg_color', 'font', 'font_color', 'font_size'):
-            if f'thumb_{key}' in plugin_settings:
-                kwargs[key] = plugin_settings[f'thumb_{key}']
+        for key in ("bg_color", "font", "font_color", "font_size"):
+            if f"thumb_{key}" in plugin_settings:
+                kwargs[key] = plugin_settings[f"thumb_{key}"]
         generate_thumbnail(
             media.src_ext[1:].upper(),
             media.thumb_path,
-            settings['thumb_size'],
-            options=settings['jpg_options'],
+            settings["thumb_size"],
+            options=settings["jpg_options"],
             **kwargs,
         )
 
 
 def process_nonmedia(media):
     """Process a non-media file: copy and create thumbnail."""
-    logger.info('Processing non-media file: %s', media.dst_filename)
+    logger.info("Processing non-media file: %s", media.dst_filename)
 
     with utils.raise_if_debug() as status:
         process_thumb(media)
@@ -140,18 +140,18 @@ def process_nonmedia(media):
 def album_file(album, filename, media=None):
     if not media:
         ext = os.path.splitext(filename)[1]
-        ext_ignore = album.settings.get('nonmedia_files_options', {}).get(
-            'ignore_ext', DEFAULT_CONFIG['ignore_ext']
+        ext_ignore = album.settings.get("nonmedia_files_options", {}).get(
+            "ignore_ext", DEFAULT_CONFIG["ignore_ext"]
         )
         if ext in ext_ignore:
-            logger.info('Ignoring non-media file: %s', filename)
+            logger.info("Ignoring non-media file: %s", filename)
         else:
-            logger.info('Registering non-media file: %s', filename)
+            logger.info("Registering non-media file: %s", filename)
             return NonMedia(filename, album.path, album.settings)
 
 
 def process_file(media, processor=None):
-    if media.type == 'nonmedia':
+    if media.type == "nonmedia":
         return process_nonmedia
 
 
diff --git a/src/sigal/plugins/titleregexp.py b/src/sigal/plugins/titleregexp.py
index 9814ad6..057725c 100644
--- a/src/sigal/plugins/titleregexp.py
+++ b/src/sigal/plugins/titleregexp.py
@@ -67,24 +67,24 @@ logger = logging.getLogger(__name__)
 def titleregexp(album):
     """Create a title by regexping name"""
 
-    cfg = album.settings.get('titleregexp')
+    cfg = album.settings.get("titleregexp")
     n = 0
     total = 0
     album_title_org = album.title
 
-    for r in cfg.get('regexp'):
+    for r in cfg.get("regexp"):
         album.title, n = re.subn(
-            r.get('search'), r.get('replace'), album.title, r.get('count', 0)
+            r.get("search"), r.get("replace"), album.title, r.get("count", 0)
         )
         total += n
 
         if n > 0:
-            for s in r.get('substitute', []):
+            for s in r.get("substitute", []):
                 album.title = album.title.replace(s[0], s[1])
-            if r.get('break', '') != '':
+            if r.get("break", "") != "":
                 break
 
-    for r in cfg.get('substitute', []):
+    for r in cfg.get("substitute", []):
         album.title = album.title.replace(r[0], r[1])
 
     if total > 0:
@@ -92,7 +92,7 @@ def titleregexp(album):
 
 
 def register(settings):
-    if settings.get('titleregexp'):
+    if settings.get("titleregexp"):
         signals.album_initialized.connect(titleregexp)
     else:
         logger.warning("'titleregexp' setting not available!")
diff --git a/src/sigal/plugins/watermark.py b/src/sigal/plugins/watermark.py
index ffd150d..8f2290e 100644
--- a/src/sigal/plugins/watermark.py
+++ b/src/sigal/plugins/watermark.py
@@ -47,8 +47,8 @@ from sigal import signals
 def reduce_opacity(im, opacity):
     """Returns an image with reduced opacity."""
     assert opacity >= 0 and opacity <= 1
-    if im.mode != 'RGBA':
-        im = im.convert('RGBA')
+    if im.mode != "RGBA":
+        im = im.convert("RGBA")
     else:
         im = im.copy()
     alpha = im.split()[3]
@@ -61,16 +61,16 @@ def watermark(im, mark, position, opacity=1):
     """Adds a watermark to an image."""
     if opacity < 1:
         mark = reduce_opacity(mark, opacity)
-    if im.mode != 'RGBA':
-        im = im.convert('RGBA')
+    if im.mode != "RGBA":
+        im = im.convert("RGBA")
     # create a transparent layer the size of the image and draw the
     # watermark in that layer.
-    layer = Image.new('RGBA', im.size, (0, 0, 0, 0))
-    if position == 'tile':
+    layer = Image.new("RGBA", im.size, (0, 0, 0, 0))
+    if position == "tile":
         for y in range(0, im.size[1], mark.size[1]):
             for x in range(0, im.size[0], mark.size[0]):
                 layer.paste(mark, (x, y))
-    elif position == 'scale':
+    elif position == "scale":
         # scale, but preserve the aspect ratio
         ratio = min(float(im.size[0]) / mark.size[0], float(im.size[1]) / mark.size[1])
         w = int(mark.size[0] * ratio)
@@ -85,16 +85,16 @@ def watermark(im, mark, position, opacity=1):
 
 def add_watermark(img, settings=None):
     logger = logging.getLogger(__name__)
-    logger.debug('Adding watermark to %r', img)
-    mark = Image.open(settings['watermark'])
-    position = settings.get('watermark_position', 'scale')
+    logger.debug("Adding watermark to %r", img)
+    mark = Image.open(settings["watermark"])
+    position = settings.get("watermark_position", "scale")
     opacity = settings.get("watermark_opacity", 1)
     return watermark(img, mark, position, opacity)
 
 
 def register(settings):
     logger = logging.getLogger(__name__)
-    if settings.get('watermark'):
+    if settings.get("watermark"):
         signals.img_resized.connect(add_watermark)
     else:
-        logger.warning('Watermark image is not set')
+        logger.warning("Watermark image is not set")
diff --git a/src/sigal/plugins/zip_gallery.py b/src/sigal/plugins/zip_gallery.py
index 5901d50..4996f26 100644
--- a/src/sigal/plugins/zip_gallery.py
+++ b/src/sigal/plugins/zip_gallery.py
@@ -56,18 +56,18 @@ def _generate_album_zip(album):
     archive with all original images of the corresponding directory.
     """
 
-    zip_gallery = album.settings['zip_gallery']
+    zip_gallery = album.settings["zip_gallery"]
 
     if zip_gallery and len(album) > 0:
         zip_gallery = zip_gallery.format(album=album)
         archive_path = join(album.dst_path, zip_gallery)
-        if album.settings.get('zip_skip_if_exists', False) and isfile(archive_path):
+        if album.settings.get("zip_skip_if_exists", False) and isfile(archive_path):
             logger.debug("Archive %s already created, passing", archive_path)
             return zip_gallery
 
-        archive = zipfile.ZipFile(archive_path, 'w', allowZip64=True)
+        archive = zipfile.ZipFile(archive_path, "w", allowZip64=True)
         attr = (
-            'src_path' if album.settings['zip_media_format'] == 'orig' else 'dst_path'
+            "src_path" if album.settings["zip_media_format"] == "orig" else "dst_path"
         )
 
         for p in album:
@@ -75,10 +75,10 @@ def _generate_album_zip(album):
             try:
                 archive.write(path, os.path.split(path)[1])
             except OSError as e:
-                logger.warn('Failed to add %s to the ZIP: %s', p, e)
+                logger.warn("Failed to add %s to the ZIP: %s", p, e)
 
         archive.close()
-        logger.debug('Created ZIP archive %s', archive_path)
+        logger.debug("Created ZIP archive %s", archive_path)
         return zip_gallery
 
     return False
@@ -108,15 +108,15 @@ def generate_album_zip(album):
 def nozip_gallery_file(album, settings=None):
     """Filesystem based switch to disable ZIP generation for an Album"""
     Album.zip = cached_property(generate_album_zip)
-    Album.zip.__set_name__(Album, 'zip')
+    Album.zip.__set_name__(Album, "zip")
 
 
 def check_settings(gallery):
-    if gallery.settings['zip_gallery'] and not isinstance(
-        gallery.settings['zip_gallery'], str
+    if gallery.settings["zip_gallery"] and not isinstance(
+        gallery.settings["zip_gallery"], str
     ):
         logger.error("'zip_gallery' should be set to a filename")
-        gallery.settings['zip_gallery'] = False
+        gallery.settings["zip_gallery"] = False
 
 
 def register(settings):
diff --git a/src/sigal/settings.py b/src/sigal/settings.py
index e6d4994..fbdf39c 100644
--- a/src/sigal/settings.py
+++ b/src/sigal/settings.py
@@ -27,72 +27,72 @@ from os.path import abspath, isabs, join, normpath
 from pprint import pformat
 
 _DEFAULT_CONFIG = {
-    'albums_sort_attr': 'name',
-    'albums_sort_reverse': False,
-    'autorotate_images': True,
-    'colorbox_column_size': 3,
-    'copy_exif_data': False,
-    'datetime_format': '%c',
-    'destination': '_build',
-    'files_to_copy': (),
-    'galleria_theme': 'classic',
-    'google_analytics': '',
-    'google_tag_manager': '',
-    'ignore_directories': [],
-    'ignore_files': [],
-    'img_extensions': ['.jpg', '.jpeg', '.png', '.gif', '.tif', '.tiff', '.webp'],
-    'img_processor': 'ResizeToFit',
-    'img_size': (640, 480),
-    'img_format': None,
-    'index_in_url': False,
-    'jpg_options': {'quality': 85, 'optimize': True, 'progressive': True},
-    'keep_orig': False,
-    'html_language': 'en',
-    'leaflet_provider': 'OpenStreetMap.Mapnik',
-    'links': '',
-    'locale': '',
-    'make_thumbs': True,
-    'max_img_pixels': None,
-    'map_height': '500px',
-    'medias_sort_attr': 'filename',
-    'medias_sort_reverse': False,
-    'mp4_options': ['-crf', '23', '-strict', '-2'],
-    'mp4_options_second_pass': None,
-    'orig_dir': 'original',
-    'orig_link': False,
-    'rel_link': False,
-    'output_filename': 'index.html',
-    'piwik': {'tracker_url': '', 'site_id': 0},
-    'plugin_paths': [],
-    'plugins': [],
-    'site_logo': '',
-    'show_map': False,
-    'source': '',
-    'theme': 'colorbox',
-    'thumb_dir': 'thumbnails',
-    'thumb_fit': True,
-    'thumb_fit_centering': (0.5, 0.5),
-    'thumb_prefix': '',
-    'thumb_size': (200, 150),
-    'thumb_suffix': '',
-    'thumb_video_delay': 0,
-    'thumb_video_black_retries': 0,
-    'thumb_video_black_retry_offset': 1,
-    'thumb_video_black_max_colors': 4,
-    'title': '',
-    'use_orig': False,
-    'user_css': None,
-    'video_converter': 'ffmpeg',
-    'video_extensions': ['.3gp', '.avi', '.mkv', '.mov', '.mp4', '.ogv', '.webm'],
-    'video_format': 'webm',
-    'video_always_convert': False,
-    'video_size': (480, 360),
-    'watermark': '',
-    'webm_options': ['-crf', '10', '-b:v', '1.6M', '-qmin', '4', '-qmax', '63'],
-    'webm_options_second_pass': None,
-    'write_html': True,
-    'zip_gallery': False,
-    'zip_media_format': 'resized',
+    "albums_sort_attr": "name",
+    "albums_sort_reverse": False,
+    "autorotate_images": True,
+    "colorbox_column_size": 3,
+    "copy_exif_data": False,
+    "datetime_format": "%c",
+    "destination": "_build",
+    "files_to_copy": (),
+    "galleria_theme": "classic",
+    "google_analytics": "",
+    "google_tag_manager": "",
+    "ignore_directories": [],
+    "ignore_files": [],
+    "img_extensions": [".jpg", ".jpeg", ".png", ".gif", ".tif", ".tiff", ".webp"],
+    "img_processor": "ResizeToFit",
+    "img_size": (640, 480),
+    "img_format": None,
+    "index_in_url": False,
+    "jpg_options": {"quality": 85, "optimize": True, "progressive": True},
+    "keep_orig": False,
+    "html_language": "en",
+    "leaflet_provider": "OpenStreetMap.Mapnik",
+    "links": "",
+    "locale": "",
+    "make_thumbs": True,
+    "max_img_pixels": None,
+    "map_height": "500px",
+    "medias_sort_attr": "filename",
+    "medias_sort_reverse": False,
+    "mp4_options": ["-crf", "23", "-strict", "-2"],
+    "mp4_options_second_pass": None,
+    "orig_dir": "original",
+    "orig_link": False,
+    "rel_link": False,
+    "output_filename": "index.html",
+    "piwik": {"tracker_url": "", "site_id": 0},
+    "plugin_paths": [],
+    "plugins": [],
+    "site_logo": "",
+    "show_map": False,
+    "source": "",
+    "theme": "colorbox",
+    "thumb_dir": "thumbnails",
+    "thumb_fit": True,
+    "thumb_fit_centering": (0.5, 0.5),
+    "thumb_prefix": "",
+    "thumb_size": (200, 150),
+    "thumb_suffix": "",
+    "thumb_video_delay": 0,
+    "thumb_video_black_retries": 0,
+    "thumb_video_black_retry_offset": 1,
+    "thumb_video_black_max_colors": 4,
+    "title": "",
+    "use_orig": False,
+    "user_css": None,
+    "video_converter": "ffmpeg",
+    "video_extensions": [".3gp", ".avi", ".mkv", ".mov", ".mp4", ".ogv", ".webm"],
+    "video_format": "webm",
+    "video_always_convert": False,
+    "video_size": (480, 360),
+    "watermark": "",
+    "webm_options": ["-crf", "10", "-b:v", "1.6M", "-qmin", "4", "-qmax", "63"],
+    "webm_options_second_pass": None,
+    "write_html": True,
+    "zip_gallery": False,
+    "zip_media_format": "resized",
 }
 
 
@@ -119,12 +119,12 @@ def get_thumb(settings, filename):
     path, filen = os.path.split(filename)
     name, ext = os.path.splitext(filen)
 
-    if ext.lower() in settings['video_extensions']:
-        ext = '.jpg'
+    if ext.lower() in settings["video_extensions"]:
+        ext = ".jpg"
     return join(
         path,
-        settings['thumb_dir'],
-        settings['thumb_prefix'] + name + settings['thumb_suffix'] + ext,
+        settings["thumb_dir"],
+        settings["thumb_prefix"] + name + settings["thumb_suffix"] + ext,
     )
 
 
@@ -141,20 +141,20 @@ def read_settings(filename=None):
         tempdict = {}
 
         with open(filename) as f:
-            code = compile(f.read(), filename, 'exec')
+            code = compile(f.read(), filename, "exec")
             exec(code, tempdict)
 
         settings.update(
-            (k, v) for k, v in tempdict.items() if k not in ['__builtins__']
+            (k, v) for k, v in tempdict.items() if k not in ["__builtins__"]
         )
 
         # Make the paths relative to the settings file
-        paths = ['source', 'destination', 'watermark']
+        paths = ["source", "destination", "watermark"]
 
-        if os.path.isdir(join(settings_path, settings['theme'])) and os.path.isdir(
-            join(settings_path, settings['theme'], 'templates')
+        if os.path.isdir(join(settings_path, settings["theme"])) and os.path.isdir(
+            join(settings_path, settings["theme"], "templates")
         ):
-            paths.append('theme')
+            paths.append("theme")
 
         for p in paths:
             path = settings[p]
@@ -162,7 +162,7 @@ def read_settings(filename=None):
                 settings[p] = abspath(normpath(join(settings_path, path)))
                 logger.debug("Rewrite %s : %s -> %s", p, path, settings[p])
 
-    for key in ('img_size', 'thumb_size', 'video_size'):
+    for key in ("img_size", "thumb_size", "video_size"):
         if settings[key]:
             w, h = settings[key]
             if h > w:
@@ -172,10 +172,10 @@ def read_settings(filename=None):
                     key,
                 )
 
-    if not settings['img_processor']:
-        logger.info('No Processor, images will not be resized')
+    if not settings["img_processor"]:
+        logger.info("No Processor, images will not be resized")
 
-    logger.debug('Settings:\n%s', pformat(settings, width=120))
+    logger.debug("Settings:\n%s", pformat(settings, width=120))
     return settings
 
 
diff --git a/src/sigal/signals.py b/src/sigal/signals.py
index bf923de..a0af225 100644
--- a/src/sigal/signals.py
+++ b/src/sigal/signals.py
@@ -1,13 +1,13 @@
 from blinker import signal
 
-img_resized = signal('img_resized')
+img_resized = signal("img_resized")
 
-album_initialized = signal('album_initialized')
-gallery_initialized = signal('gallery_initialized')
-gallery_build = signal('gallery_build')
-media_initialized = signal('media_initialized')
-albums_sorted = signal('albums_sorted')
-medias_sorted = signal('medias_sorted')
-before_render = signal('before_render')
-album_file = signal('album_file')
-process_file = signal('process_file')
+album_initialized = signal("album_initialized")
+gallery_initialized = signal("gallery_initialized")
+gallery_build = signal("gallery_build")
+media_initialized = signal("media_initialized")
+albums_sorted = signal("albums_sorted")
+medias_sorted = signal("medias_sorted")
+before_render = signal("before_render")
+album_file = signal("album_file")
+process_file = signal("process_file")
diff --git a/src/sigal/templates/sigal.conf.py b/src/sigal/templates/sigal.conf.py
index b6aa5f4..c1a5612 100644
--- a/src/sigal/templates/sigal.conf.py
+++ b/src/sigal/templates/sigal.conf.py
@@ -13,7 +13,7 @@
 
 # Source directory. Can be set here or as the first argument of the `sigal
 # build` command
-source = 'pictures'
+source = "pictures"
 
 # Destination directory. Can be set here or as the second argument of the
 # `sigal build` command (default: '_build')
@@ -22,7 +22,7 @@ source = 'pictures'
 # Theme :
 # - colorbox (default), galleria, photoswipe, or the path to a custom theme
 # directory
-theme = 'galleria'
+theme = "galleria"
 
 # Theme for galleria (https://galleriajs.github.io/themes/)
 # galleria_theme = 'classic'
diff --git a/src/sigal/utils.py b/src/sigal/utils.py
index a3c4474..851b929 100644
--- a/src/sigal/utils.py
+++ b/src/sigal/utils.py
@@ -31,7 +31,7 @@ from sigal.settings import Status
 
 logger = logging.getLogger(__name__)
 MD = None
-VIDEO_MIMES = {'.mp4': 'video/mp4', '.webm': 'video/webm', '.ogv': 'video/ogg'}
+VIDEO_MIMES = {".mp4": "video/mp4", ".webm": "video/webm", ".ogv": "video/ogg"}
 
 
 class Devnull:
@@ -77,8 +77,8 @@ def get_mod_date(path):
 def url_from_path(path):
     """Transform path to url, converting backslashes to slashes if needed."""
 
-    if os.sep != '/':
-        path = '/'.join(path.split(os.sep))
+    if os.sep != "/":
+        path = "/".join(path.split(os.sep))
     return quote(path)
 
 
@@ -90,17 +90,17 @@ def read_markdown(filename):
     # Use utf-8-sig codec to remove BOM if it is present. This is only possible
     # this way prior to feeding the text to the markdown parser (which would
     # also default to pure utf-8)
-    with open(filename, encoding='utf-8-sig') as f:
+    with open(filename, encoding="utf-8-sig") as f:
         text = f.read()
 
     if MD is None:
         MD = Markdown(
             extensions=[
-                'markdown.extensions.extra',
-                'markdown.extensions.meta',
-                'markdown.extensions.tables',
+                "markdown.extensions.extra",
+                "markdown.extensions.meta",
+                "markdown.extensions.tables",
             ],
-            output_format='html5',
+            output_format="html5",
         )
     else:
         MD.reset()
@@ -109,16 +109,16 @@ def read_markdown(filename):
         MD.Meta = {}
 
     # Mark HTML with Markup to prevent jinja2 autoescaping
-    output = {'description': Markup(MD.convert(text))}
+    output = {"description": Markup(MD.convert(text))}
 
     try:
         meta = MD.Meta.copy()
     except AttributeError:
         pass
     else:
-        output['meta'] = meta
+        output["meta"] = meta
         try:
-            output['title'] = MD.Meta['title'][0]
+            output["title"] = MD.Meta["title"][0]
         except KeyError:
             pass
 
@@ -144,7 +144,7 @@ class raise_if_debug:
 
     def __exit__(self, exc_type, exc_value, traceback):
         if exc_type:
-            logger.info('Failed to process: %r', exc_value)
+            logger.info("Failed to process: %r", exc_value)
             if logger.getEffectiveLevel() == logging.DEBUG:
                 # propagate the exception
                 return False
diff --git a/src/sigal/video.py b/src/sigal/video.py
index 2899c00..3699d43 100644
--- a/src/sigal/video.py
+++ b/src/sigal/video.py
@@ -256,9 +256,9 @@ def process_video(media):
                 fit=settings["thumb_fit"],
                 options=settings["jpg_options"],
                 converter=settings["video_converter"],
-                black_retries=settings['thumb_video_black_retries'],
-                black_offset=settings['thumb_video_black_retry_offset'],
-                black_max_colors=settings['thumb_video_black_max_colors'],
+                black_retries=settings["thumb_video_black_retries"],
+                black_offset=settings["thumb_video_black_retry_offset"],
+                black_max_colors=settings["thumb_video_black_max_colors"],
             )
 
     return status.value
diff --git a/src/sigal/writer.py b/src/sigal/writer.py
index 97a0a38..c19ef4f 100644
--- a/src/sigal/writer.py
+++ b/src/sigal/writer.py
@@ -76,10 +76,10 @@ class AbstractWriter:
         # handle optional filters.py
         filters_py = os.path.join(self.theme, "filters.py")
         if os.path.exists(filters_py):
-            self.logger.info('Loading filters file: %s', filters_py)
-            module_spec = importlib.util.spec_from_file_location('filters', filters_py)
+            self.logger.info("Loading filters file: %s", filters_py)
+            module_spec = importlib.util.spec_from_file_location("filters", filters_py)
             mod = importlib.util.module_from_spec(module_spec)
-            sys.modules['filters'] = mod
+            sys.modules["filters"] = mod
             module_spec.loader.exec_module(mod)
             for name in dir(mod):
                 if isinstance(getattr(mod, name), types.FunctionType):
@@ -101,8 +101,8 @@ class AbstractWriter:
             shutil.rmtree(self.theme_path)
 
         for static_path in (
-            os.path.join(THEMES_PATH, 'default', 'static'),
-            os.path.join(self.theme, 'static'),
+            os.path.join(THEMES_PATH, "default", "static"),
+            os.path.join(self.theme, "static"),
         ):
             shutil.copytree(static_path, self.theme_path, dirs_exist_ok=True)
 
diff --git a/tests/conftest.py b/tests/conftest.py
index b0060b5..b7426c3 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -9,10 +9,10 @@ from sigal import signals
 from sigal.settings import read_settings
 
 CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
-BUILD_DIR = os.path.join(CURRENT_DIR, 'sample', '_build')
+BUILD_DIR = os.path.join(CURRENT_DIR, "sample", "_build")
 
 
-@pytest.fixture(scope='session', autouse=True)
+@pytest.fixture(scope="session", autouse=True)
 def remove_build():
     """Ensure that build directory does not exists before each test."""
     if os.path.exists(BUILD_DIR):
@@ -22,7 +22,7 @@ def remove_build():
 @pytest.fixture
 def settings():
     """Read the sample config file."""
-    return read_settings(os.path.join(CURRENT_DIR, 'sample', 'sigal.conf.py'))
+    return read_settings(os.path.join(CURRENT_DIR, "sample", "sigal.conf.py"))
 
 
 @pytest.fixture()
@@ -30,7 +30,7 @@ def disconnect_signals():
     # Reset plugins
     yield None
     for name in dir(signals):
-        if not name.startswith('_'):
+        if not name.startswith("_"):
             try:
                 sig = getattr(signals, name)
                 if isinstance(sig, blinker.Signal):
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 7191572..601129f 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -6,15 +6,15 @@ from click.testing import CliRunner
 
 from sigal import build, init, serve, set_meta
 
-TESTGAL = join(os.path.abspath(os.path.dirname(__file__)), 'sample')
+TESTGAL = join(os.path.abspath(os.path.dirname(__file__)), "sample")
 
 
 def test_init(tmpdir):
-    config_file = str(tmpdir.join('sigal.conf.py'))
+    config_file = str(tmpdir.join("sigal.conf.py"))
     runner = CliRunner()
     result = runner.invoke(init, [config_file])
     assert result.exit_code == 0
-    assert result.output.startswith('Sample config file created:')
+    assert result.output.startswith("Sample config file created:")
     assert os.path.isfile(config_file)
 
     result = runner.invoke(init, [config_file])
@@ -26,29 +26,29 @@ def test_init(tmpdir):
 
 def test_build(tmpdir, disconnect_signals):
     runner = CliRunner()
-    config_file = str(tmpdir.join('sigal.conf.py'))
-    tmpdir.mkdir('pictures')
+    config_file = str(tmpdir.join("sigal.conf.py"))
+    tmpdir.mkdir("pictures")
     tmpdir = str(tmpdir)
     cwd = os.getcwd()
 
     try:
         result = runner.invoke(init, [config_file])
         assert result.exit_code == 0
-        os.symlink(join(TESTGAL, 'watermark.png'), join(tmpdir, 'watermark.png'))
+        os.symlink(join(TESTGAL, "watermark.png"), join(tmpdir, "watermark.png"))
         os.symlink(
-            join(TESTGAL, 'pictures', 'dir2', 'KeckObservatory20071020.jpg'),
-            join(tmpdir, 'pictures', 'KeckObservatory20071020.jpg'),
+            join(TESTGAL, "pictures", "dir2", "KeckObservatory20071020.jpg"),
+            join(tmpdir, "pictures", "KeckObservatory20071020.jpg"),
         )
 
-        result = runner.invoke(build, ['-n', 1, '--debug'])
+        result = runner.invoke(build, ["-n", 1, "--debug"])
         assert result.exit_code == 1
 
         os.chdir(tmpdir)
 
-        result = runner.invoke(build, ['foo', '-n', 1, '--debug'])
+        result = runner.invoke(build, ["foo", "-n", 1, "--debug"])
         assert result.exit_code == 1
 
-        result = runner.invoke(build, ['pictures', 'pictures/out', '-n', 1, '--debug'])
+        result = runner.invoke(build, ["pictures", "pictures/out", "-n", 1, "--debug"])
         assert result.exit_code == 1
 
         with open(config_file) as f:
@@ -70,29 +70,29 @@ rss_feed = {'feed_url': 'http://example.org/feed.rss', 'nb_items': 10}
 atom_feed = {'feed_url': 'http://example.org/feed.atom', 'nb_items': 10}
 """
 
-        with open(config_file, 'w') as f:
+        with open(config_file, "w") as f:
             f.write(text)
 
         result = runner.invoke(
-            build, ['pictures', 'build', '--title', 'Testing build', '-n', 1, '--debug']
+            build, ["pictures", "build", "--title", "Testing build", "-n", 1, "--debug"]
         )
         assert result.exit_code == 0
         assert os.path.isfile(
-            join(tmpdir, 'build', 'thumbnails', 'KeckObservatory20071020.jpg')
+            join(tmpdir, "build", "thumbnails", "KeckObservatory20071020.jpg")
         )
-        assert os.path.isfile(join(tmpdir, 'build', 'feed.atom'))
-        assert os.path.isfile(join(tmpdir, 'build', 'feed.rss'))
-        assert os.path.isfile(join(tmpdir, 'build', 'watermark.png'))
+        assert os.path.isfile(join(tmpdir, "build", "feed.atom"))
+        assert os.path.isfile(join(tmpdir, "build", "feed.rss"))
+        assert os.path.isfile(join(tmpdir, "build", "watermark.png"))
     finally:
         os.chdir(cwd)
         # Reset logger
-        logger = logging.getLogger('sigal')
+        logger = logging.getLogger("sigal")
         logger.handlers[:] = []
         logger.setLevel(logging.INFO)
 
 
 def test_serve(tmpdir):
-    config_file = str(tmpdir.join('sigal.conf.py'))
+    config_file = str(tmpdir.join("sigal.conf.py"))
     runner = CliRunner()
     result = runner.invoke(init, [config_file])
     assert result.exit_code == 0
@@ -100,7 +100,7 @@ def test_serve(tmpdir):
     result = runner.invoke(serve)
     assert result.exit_code == 2
 
-    result = runner.invoke(serve, ['-c', config_file])
+    result = runner.invoke(serve, ["-c", config_file])
     assert result.exit_code == 1
 
 
diff --git a/tests/test_compress_assets_plugin.py b/tests/test_compress_assets_plugin.py
index dcaa306..889e78b 100644
--- a/tests/test_compress_assets_plugin.py
+++ b/tests/test_compress_assets_plugin.py
@@ -12,18 +12,18 @@ CURRENT_DIR = os.path.dirname(__file__)
 
 
 def make_gallery(settings, tmpdir, method):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     # Really speed up testing
-    settings['use_orig'] = True
+    settings["use_orig"] = True
     if "sigal.plugins.compress_assets" not in settings["plugins"]:
-        settings['plugins'] += ["sigal.plugins.compress_assets"]
+        settings["plugins"] += ["sigal.plugins.compress_assets"]
 
     # Set method
-    settings.setdefault('compress_assets_options', {})['method'] = method
+    settings.setdefault("compress_assets_options", {})["method"] = method
 
     compress_options = compress_assets.DEFAULT_SETTINGS.copy()
     # The key was created by the previous setdefault if needed
-    compress_options.update(settings['compress_assets_options'])
+    compress_options.update(settings["compress_assets_options"])
 
     init_plugins(settings)
     gal = Gallery(settings)
@@ -36,7 +36,7 @@ def walk_destination(destination, suffixes, compress_suffix):
     for path, dirs, files in os.walk(destination):
         for file in files:
             original_filename = os.path.join(path, file)
-            compressed_filename = '{}.{}'.format(
+            compressed_filename = "{}.{}".format(
                 os.path.join(path, file), compress_suffix
             )
             path_exists = os.path.exists(compressed_filename)
@@ -53,7 +53,7 @@ def walk_destination(destination, suffixes, compress_suffix):
 
 @pytest.mark.parametrize(
     "method,compress_suffix,test_import",
-    [('gzip', 'gz', None), ('zopfli', 'gz', 'zopfli.gzip'), ('brotli', 'br', 'brotli')],
+    [("gzip", "gz", None), ("zopfli", "gz", "zopfli.gzip"), ("brotli", "br", "brotli")],
 )
 def test_compress(
     disconnect_signals, settings, tmpdir, method, compress_suffix, test_import
@@ -65,16 +65,16 @@ def test_compress(
     for _ in range(2):
         compress_options = make_gallery(settings, tmpdir, method)
         walk_destination(
-            settings['destination'], compress_options['suffixes'], compress_suffix
+            settings["destination"], compress_options["suffixes"], compress_suffix
         )
 
 
 @pytest.mark.parametrize(
     "method,compress_suffix,mask",
     [
-        ('zopfli', 'gz', 'zopfli.gzip'),
-        ('brotli', 'br', 'brotli'),
-        ('__does_not_exist__', 'br', None),
+        ("zopfli", "gz", "zopfli.gzip"),
+        ("brotli", "br", "brotli"),
+        ("__does_not_exist__", "br", None),
     ],
 )
 def test_failed_compress(
@@ -84,5 +84,5 @@ def test_failed_compress(
     with mock.patch.dict(sys.modules, {mask: None}):
         make_gallery(settings, tmpdir, method)
         walk_destination(
-            settings['destination'], [], compress_suffix  # No file should be compressed
+            settings["destination"], [], compress_suffix  # No file should be compressed
         )
diff --git a/tests/test_encrypt.py b/tests/test_encrypt.py
index 3ea83c7..a305f85 100644
--- a/tests/test_encrypt.py
+++ b/tests/test_encrypt.py
@@ -22,9 +22,9 @@ def get_key_tag(settings):
 
 
 def test_encrypt(settings, tmpdir, disconnect_signals, caplog):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     if "sigal.plugins.encrypt" not in settings["plugins"]:
-        settings['plugins'] += ["sigal.plugins.encrypt"]
+        settings["plugins"] += ["sigal.plugins.encrypt"]
 
     init_plugins(settings)
     gal = Gallery(settings)
@@ -32,17 +32,17 @@ def test_encrypt(settings, tmpdir, disconnect_signals, caplog):
     with pytest.raises(ValueError, match="no encrypt_options in settings"):
         gal.build()
 
-    settings['encrypt_options'] = {}
+    settings["encrypt_options"] = {}
 
     gal = Gallery(settings)
 
     with pytest.raises(ValueError, match="no password provided"):
         gal.build()
 
-    settings['encrypt_options'] = {
-        'password': 'password',
-        'ask_password': True,
-        'encrypt_symlinked_originals': False,
+    settings["encrypt_options"] = {
+        "password": "password",
+        "ask_password": True,
+        "encrypt_symlinked_originals": False,
     }
 
     gal = Gallery(settings)
@@ -80,20 +80,20 @@ def test_encrypt(settings, tmpdir, disconnect_signals, caplog):
                     endec.decrypt(key, infile, outfile, tag)
 
     # check static files have been copied
-    static = os.path.join(settings["destination"], 'static')
+    static = os.path.join(settings["destination"], "static")
     assert os.path.isfile(os.path.join(static, "decrypt.js"))
     assert os.path.isfile(os.path.join(static, "keycheck.txt"))
     assert os.path.isfile(os.path.join(settings["destination"], "sw.js"))
 
     # check keycheck file
     with open(
-        os.path.join(settings["destination"], 'static', "keycheck.txt"), "rb"
+        os.path.join(settings["destination"], "static", "keycheck.txt"), "rb"
     ) as infile:
         with BytesIO() as outfile:
             endec.decrypt(key, infile, outfile, tag)
 
     caplog.clear()
-    caplog.set_level('DEBUG')
+    caplog.set_level("DEBUG")
     gal = Gallery(settings)
     gal.build()
     # Doesn't work on Actions ...
diff --git a/tests/test_extended_caching.py b/tests/test_extended_caching.py
index 537c0cf..4617600 100644
--- a/tests/test_extended_caching.py
+++ b/tests/test_extended_caching.py
@@ -8,11 +8,11 @@ CURRENT_DIR = os.path.dirname(__file__)
 
 
 def test_save_cache(settings, tmpdir):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     gal = Gallery(settings, ncpu=1)
     extended_caching.save_cache(gal)
 
-    cachePath = os.path.join(settings['destination'], ".metadata_cache")
+    cachePath = os.path.join(settings["destination"], ".metadata_cache")
 
     assert os.path.isfile(cachePath)
 
@@ -23,17 +23,17 @@ def test_save_cache(settings, tmpdir):
     album = gal.albums["exifTest"]
     cache_img = cache["exifTest/21.jpg"]
     assert cache_img["exif"] == album.medias[0].exif
-    assert 'markdown_metadata' not in cache_img
+    assert "markdown_metadata" not in cache_img
     assert cache_img["file_metadata"] == album.medias[0].file_metadata
 
     cache_img = cache["exifTest/22.jpg"]
     assert cache_img["exif"] == album.medias[1].exif
-    assert 'markdown_metadata' not in cache_img
+    assert "markdown_metadata" not in cache_img
     assert cache_img["file_metadata"] == album.medias[1].file_metadata
 
     cache_img = cache["exifTest/noexif.png"]
     assert cache_img["exif"] == album.medias[2].exif
-    assert 'markdown_metadata' not in cache_img
+    assert "markdown_metadata" not in cache_img
     assert cache_img["file_metadata"] == album.medias[2].file_metadata
 
     # test iptc and md
@@ -42,7 +42,7 @@ def test_save_cache(settings, tmpdir):
 
     cache_img = cache["iptcTest/1.jpg"]
     assert cache_img["file_metadata"] == album.medias[0].file_metadata
-    assert 'markdown_metadata' not in cache_img
+    assert "markdown_metadata" not in cache_img
 
     cache_img = cache["iptcTest/2.jpg"]
     assert cache_img["markdown_metadata"] == album.medias[1].markdown_metadata
@@ -56,7 +56,7 @@ def test_save_cache(settings, tmpdir):
 
 
 def test_restore_cache(settings, tmpdir):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     gal1 = Gallery(settings, ncpu=1)
     gal2 = Gallery(settings, ncpu=1)
     extended_caching.save_cache(gal1)
@@ -64,16 +64,16 @@ def test_restore_cache(settings, tmpdir):
     assert gal1.metadataCache == gal2.metadataCache
 
     # test bad cache
-    cachePath = os.path.join(settings['destination'], ".metadata_cache")
-    with open(cachePath, 'w') as f:
-        f.write('bad pickle file')
+    cachePath = os.path.join(settings["destination"], ".metadata_cache")
+    with open(cachePath, "w") as f:
+        f.write("bad pickle file")
 
     extended_caching._restore_cache(gal2)
     assert gal2.metadataCache == {}
 
 
 def test_load_exif(settings, tmpdir):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     gal1 = Gallery(settings, ncpu=1)
     gal1.albums["exifTest"].medias[2].exif = "blafoo"
     # set mod_date in future, to force these values
@@ -99,7 +99,7 @@ def test_load_exif(settings, tmpdir):
 
 
 def test_load_metadata_missing(settings, tmpdir):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     gal = Gallery(settings, ncpu=1)
     extended_caching.save_cache(gal)
     assert gal.metadataCache
diff --git a/tests/test_gallery.py b/tests/test_gallery.py
index e823a24..72ff9a5 100644
--- a/tests/test_gallery.py
+++ b/tests/test_gallery.py
@@ -13,86 +13,86 @@ from sigal.video import SubprocessException
 CURRENT_DIR = os.path.dirname(__file__)
 
 REF = {
-    'dir1': {
-        'title': 'An example gallery',
-        'name': 'dir1',
-        'thumbnail': 'dir1/test1/thumbnails/11.tn.jpg',
-        'subdirs': ['test1', 'test2', 'test3'],
-        'medias': [],
+    "dir1": {
+        "title": "An example gallery",
+        "name": "dir1",
+        "thumbnail": "dir1/test1/thumbnails/11.tn.jpg",
+        "subdirs": ["test1", "test2", "test3"],
+        "medias": [],
     },
-    'dir1/test1': {
-        'title': 'An example sub-category',
-        'name': 'test1',
-        'thumbnail': 'test1/thumbnails/11.tn.jpg',
-        'subdirs': [],
-        'medias': [
-            '11.jpg',
-            'CMB_Timeline300_no_WMAP.jpg',
-            'flickr_jerquiaga_2394751088_cc-by-nc.jpg',
-            'example.gif',
+    "dir1/test1": {
+        "title": "An example sub-category",
+        "name": "test1",
+        "thumbnail": "test1/thumbnails/11.tn.jpg",
+        "subdirs": [],
+        "medias": [
+            "11.jpg",
+            "CMB_Timeline300_no_WMAP.jpg",
+            "flickr_jerquiaga_2394751088_cc-by-nc.jpg",
+            "example.gif",
         ],
     },
-    'dir1/test2': {
-        'title': 'test2',
-        'name': 'test2',
-        'thumbnail': 'test2/thumbnails/21.tn.tiff',
-        'subdirs': [],
-        'medias': ['21.tiff', '22.jpg', 'CMB_Timeline300_no_WMAP.jpg'],
+    "dir1/test2": {
+        "title": "test2",
+        "name": "test2",
+        "thumbnail": "test2/thumbnails/21.tn.tiff",
+        "subdirs": [],
+        "medias": ["21.tiff", "22.jpg", "CMB_Timeline300_no_WMAP.jpg"],
     },
-    'dir1/test3': {
-        'title': '01 First title alphabetically',
-        'name': 'test3',
-        'thumbnail': 'test3/thumbnails/3.tn.jpg',
-        'subdirs': [],
-        'medias': ['3.jpg'],
+    "dir1/test3": {
+        "title": "01 First title alphabetically",
+        "name": "test3",
+        "thumbnail": "test3/thumbnails/3.tn.jpg",
+        "subdirs": [],
+        "medias": ["3.jpg"],
     },
-    'dir2': {
-        'title': 'Another example gallery with a very long name',
-        'name': 'dir2',
-        'thumbnail': 'dir2/thumbnails/m57_the_ring_nebula-587px.tn.jpg',
-        'subdirs': [],
-        'medias': [
-            'KeckObservatory20071020.jpg',
-            'Hubble Interacting Galaxy NGC 5257.jpg',
-            'Hubble ultra deep field.jpg',
-            'm57_the_ring_nebula-587px.jpg',
+    "dir2": {
+        "title": "Another example gallery with a very long name",
+        "name": "dir2",
+        "thumbnail": "dir2/thumbnails/m57_the_ring_nebula-587px.tn.jpg",
+        "subdirs": [],
+        "medias": [
+            "KeckObservatory20071020.jpg",
+            "Hubble Interacting Galaxy NGC 5257.jpg",
+            "Hubble ultra deep field.jpg",
+            "m57_the_ring_nebula-587px.jpg",
         ],
     },
-    'accentué': {
-        'title': 'accentué',
-        'name': 'accentué',
-        'thumbnail': 'accentu%C3%A9/thumbnails/h%C3%A9lico%C3%AFde.tn.jpg',
-        'subdirs': [],
-        'medias': ['hélicoïde.jpg', '11.jpg'],
+    "accentué": {
+        "title": "accentué",
+        "name": "accentué",
+        "thumbnail": "accentu%C3%A9/thumbnails/h%C3%A9lico%C3%AFde.tn.jpg",
+        "subdirs": [],
+        "medias": ["hélicoïde.jpg", "11.jpg"],
     },
-    'video': {
-        'title': 'video',
-        'name': 'video',
-        'thumbnail': 'video/thumbnails/example%20video.tn.jpg',
-        'subdirs': [],
-        'medias': ['example video.ogv'],
+    "video": {
+        "title": "video",
+        "name": "video",
+        "thumbnail": "video/thumbnails/example%20video.tn.jpg",
+        "subdirs": [],
+        "medias": ["example video.ogv"],
     },
-    'webp': {
-        'title': 'webp',
-        'name': 'webp',
-        'thumbnail': 'webp/thumbnails/_MG_7805_lossy80.tn.webp',
-        'subdirs': [],
-        'medias': ['_MG_7805_lossy80.webp', '_MG_7808_lossy80.webp'],
+    "webp": {
+        "title": "webp",
+        "name": "webp",
+        "thumbnail": "webp/thumbnails/_MG_7805_lossy80.tn.webp",
+        "subdirs": [],
+        "medias": ["_MG_7805_lossy80.webp", "_MG_7808_lossy80.webp"],
     },
 }
 
 
 def test_media(settings):
-    m = Media('11.jpg', 'dir1/test1', settings)
-    path = join('dir1', 'test1')
-    file_path = join(path, '11.jpg')
-    thumb = join('thumbnails', '11.tn.jpg')
-
-    assert m.dst_filename == '11.jpg'
-    assert m.src_path == join(settings['source'], file_path)
-    assert m.dst_path == join(settings['destination'], file_path)
+    m = Media("11.jpg", "dir1/test1", settings)
+    path = join("dir1", "test1")
+    file_path = join(path, "11.jpg")
+    thumb = join("thumbnails", "11.tn.jpg")
+
+    assert m.dst_filename == "11.jpg"
+    assert m.src_path == join(settings["source"], file_path)
+    assert m.dst_path == join(settings["destination"], file_path)
     assert m.thumb_name == thumb
-    assert m.thumb_path == join(settings['destination'], path, thumb)
+    assert m.thumb_path == join(settings["destination"], path, thumb)
     assert m.title == "Foo Bar"
     assert m.description == "<p>This is a funny description of this image</p>"
 
@@ -101,223 +101,223 @@ def test_media(settings):
 
 
 def test_media_orig(settings, tmpdir):
-    settings['keep_orig'] = False
-    m = Media('11.jpg', 'dir1/test1', settings)
+    settings["keep_orig"] = False
+    m = Media("11.jpg", "dir1/test1", settings)
     assert m.big is None
 
-    settings['keep_orig'] = True
-    settings['destination'] = str(tmpdir)
+    settings["keep_orig"] = True
+    settings["destination"] = str(tmpdir)
 
-    m = Image('11.jpg', 'dir1/test1', settings)
-    assert m.big == 'original/11.jpg'
+    m = Image("11.jpg", "dir1/test1", settings)
+    assert m.big == "original/11.jpg"
 
-    m = Video('example video.ogv', 'video', settings)
-    assert m.dst_filename == 'example video.webm'
-    assert m.big_url == 'original/example%20video.ogv'
-    assert os.path.isfile(join(settings['destination'], m.path, m.big))
+    m = Video("example video.ogv", "video", settings)
+    assert m.dst_filename == "example video.webm"
+    assert m.big_url == "original/example%20video.ogv"
+    assert os.path.isfile(join(settings["destination"], m.path, m.big))
 
-    settings['use_orig'] = True
+    settings["use_orig"] = True
 
-    m = Image('21.jpg', 'dir1/test2', settings)
-    assert m.big == '21.jpg'
+    m = Image("21.jpg", "dir1/test2", settings)
+    assert m.big == "21.jpg"
 
 
 def test_media_iptc_override(settings):
-    img_with_md = Image('2.jpg', 'iptcTest', settings)
+    img_with_md = Image("2.jpg", "iptcTest", settings)
     assert img_with_md.title == "Markdown title beats iptc"
     # Markdown parsing adds formatting. Let's just focus on content
     assert "Markdown description beats iptc" in img_with_md.description
-    img_no_md = Image('1.jpg', 'iptcTest', settings)
+    img_no_md = Image("1.jpg", "iptcTest", settings)
     assert (
         img_no_md.title
-        == 'Haemostratulus clouds over Canberra - 2005-12-28 at 03-25-07'
+        == "Haemostratulus clouds over Canberra - 2005-12-28 at 03-25-07"
     )
     assert (
         img_no_md.description == '"Haemo" because they look like haemoglobin '
         'cells and "stratulus" because I can\'t work out whether '
-        'they\'re Stratus or Cumulus clouds.\nWe\'re driving down '
-        'the main drag in Canberra so it\'s Parliament House that '
-        'you can see at the end of the road.'
+        "they're Stratus or Cumulus clouds.\nWe're driving down "
+        "the main drag in Canberra so it's Parliament House that "
+        "you can see at the end of the road."
     )
 
 
 def test_media_img_format(settings):
-    settings['img_format'] = 'jpeg'
-    m = Image('11.tiff', 'dir1/test1', settings)
-    path = join('dir1', 'test1')
-    thumb = join('thumbnails', '11.tn.jpeg')
-
-    assert m.dst_filename == '11.jpeg'
-    assert m.src_path == join(settings['source'], path, '11.tiff')
-    assert m.dst_path == join(settings['destination'], path, '11.jpeg')
+    settings["img_format"] = "jpeg"
+    m = Image("11.tiff", "dir1/test1", settings)
+    path = join("dir1", "test1")
+    thumb = join("thumbnails", "11.tn.jpeg")
+
+    assert m.dst_filename == "11.jpeg"
+    assert m.src_path == join(settings["source"], path, "11.tiff")
+    assert m.dst_path == join(settings["destination"], path, "11.jpeg")
     assert m.thumb_name == thumb
-    assert m.thumb_path == join(settings['destination'], path, thumb)
+    assert m.thumb_path == join(settings["destination"], path, thumb)
     assert m.title == "Foo Bar"
     assert m.description == "<p>This is a funny description of this image</p>"
 
-    file_path = join(path, '11.tiff')
+    file_path = join(path, "11.tiff")
     assert repr(m) == f"<Image>('{file_path}')"
     assert str(m) == file_path
 
 
 def test_image(settings, tmpdir):
-    settings['destination'] = str(tmpdir)
-    settings['datetime_format'] = '%d/%m/%Y'
-    m = Image('11.jpg', 'dir1/test1', settings)
+    settings["destination"] = str(tmpdir)
+    settings["datetime_format"] = "%d/%m/%Y"
+    m = Image("11.jpg", "dir1/test1", settings)
     assert m.date == datetime.datetime(2006, 1, 22, 10, 32, 42)
-    assert m.exif['datetime'] == '22/01/2006'
+    assert m.exif["datetime"] == "22/01/2006"
 
-    os.makedirs(join(settings['destination'], 'dir1', 'test1', 'thumbnails'))
-    assert m.thumbnail == join('thumbnails', '11.tn.jpg')
+    os.makedirs(join(settings["destination"], "dir1", "test1", "thumbnails"))
+    assert m.thumbnail == join("thumbnails", "11.tn.jpg")
     assert os.path.isfile(m.thumb_path)
 
 
 def test_video(settings, tmpdir):
-    settings['destination'] = str(tmpdir)
-    m = Video('example video.ogv', 'video', settings)
+    settings["destination"] = str(tmpdir)
+    m = Video("example video.ogv", "video", settings)
 
-    src_path = join('video', 'example video.ogv')
+    src_path = join("video", "example video.ogv")
     assert str(m) == src_path
 
-    file_path = join('video', 'example video.webm')
-    assert m.dst_path == join(settings['destination'], file_path)
+    file_path = join("video", "example video.webm")
+    assert m.dst_path == join(settings["destination"], file_path)
 
-    os.makedirs(join(settings['destination'], 'video', 'thumbnails'))
-    assert m.thumbnail == join('thumbnails', 'example%20video.tn.jpg')
+    os.makedirs(join(settings["destination"], "video", "thumbnails"))
+    assert m.thumbnail == join("thumbnails", "example%20video.tn.jpg")
     assert os.path.isfile(m.thumb_path)
 
 
 @pytest.mark.parametrize("path,album", REF.items())
 def test_album(path, album, settings, tmpdir):
     gal = Gallery(settings, ncpu=1)
-    a = Album(path, settings, album['subdirs'], album['medias'], gal)
+    a = Album(path, settings, album["subdirs"], album["medias"], gal)
 
-    assert a.title == album['title']
-    assert a.name == album['name']
-    assert a.subdirs == album['subdirs']
-    assert a.thumbnail == album['thumbnail']
-    if path == 'video':
+    assert a.title == album["title"]
+    assert a.name == album["name"]
+    assert a.subdirs == album["subdirs"]
+    assert a.thumbnail == album["thumbnail"]
+    if path == "video":
         assert list(a.images) == []
         assert [m.dst_filename for m in a.medias] == [
-            album['medias'][0].replace('.ogv', '.webm')
+            album["medias"][0].replace(".ogv", ".webm")
         ]
     else:
         assert list(a.videos) == []
-        assert [m.dst_filename for m in a.medias] == album['medias']
-    assert len(a) == len(album['medias'])
+        assert [m.dst_filename for m in a.medias] == album["medias"]
+    assert len(a) == len(album["medias"])
 
 
 def test_albums_sort(settings):
     gal = Gallery(settings, ncpu=1)
-    album = REF['dir1']
-    subdirs = list(album['subdirs'])
+    album = REF["dir1"]
+    subdirs = list(album["subdirs"])
 
-    settings['albums_sort_reverse'] = False
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs('')
+    settings["albums_sort_reverse"] = False
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs("")
     assert [alb.name for alb in a.albums] == subdirs
 
-    settings['albums_sort_reverse'] = True
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs('')
+    settings["albums_sort_reverse"] = True
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs("")
     assert [alb.name for alb in a.albums] == list(reversed(subdirs))
 
     titles = [im.title for im in a.albums]
     titles.sort()
-    settings['albums_sort_reverse'] = False
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs('title')
+    settings["albums_sort_reverse"] = False
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs("title")
     assert [im.title for im in a.albums] == titles
 
-    settings['albums_sort_reverse'] = True
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs('title')
+    settings["albums_sort_reverse"] = True
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs("title")
     assert [im.title for im in a.albums] == list(reversed(titles))
 
-    orders = ['01', '02', '03']
+    orders = ["01", "02", "03"]
     orders.sort()
-    settings['albums_sort_reverse'] = False
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs('meta.order')
-    assert [d.meta['order'][0] for d in a.albums] == orders
+    settings["albums_sort_reverse"] = False
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs("meta.order")
+    assert [d.meta["order"][0] for d in a.albums] == orders
 
-    settings['albums_sort_reverse'] = True
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs('meta.order')
-    assert [d.meta['order'][0] for d in a.albums] == list(reversed(orders))
+    settings["albums_sort_reverse"] = True
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs("meta.order")
+    assert [d.meta["order"][0] for d in a.albums] == list(reversed(orders))
 
-    settings['albums_sort_reverse'] = False
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs(['meta.partialorder', 'meta.order'])
-    assert [d.name for d in a.albums] == list(['test1', 'test2', 'test3'])
+    settings["albums_sort_reverse"] = False
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs(["meta.partialorder", "meta.order"])
+    assert [d.name for d in a.albums] == list(["test1", "test2", "test3"])
 
-    settings['albums_sort_reverse'] = False
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs(['meta.partialorderb', 'name'])
-    assert [d.name for d in a.albums] == list(['test2', 'test3', 'test1'])
+    settings["albums_sort_reverse"] = False
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs(["meta.partialorderb", "name"])
+    assert [d.name for d in a.albums] == list(["test2", "test3", "test1"])
 
-    settings['albums_sort_reverse'] = True
-    a = Album('dir1', settings, album['subdirs'], album['medias'], gal)
-    a.sort_subdirs(['meta.partialorderb', 'name'])
-    assert [d.name for d in a.albums] == list(['test1', 'test3', 'test2'])
+    settings["albums_sort_reverse"] = True
+    a = Album("dir1", settings, album["subdirs"], album["medias"], gal)
+    a.sort_subdirs(["meta.partialorderb", "name"])
+    assert [d.name for d in a.albums] == list(["test1", "test3", "test2"])
 
 
 def test_medias_sort(settings):
     gal = Gallery(settings, ncpu=1)
-    album = REF['dir1/test2']
-
-    settings['medias_sort_reverse'] = True
-    a = Album('dir1/test2', settings, album['subdirs'], album['medias'], gal)
-    a.sort_medias(settings['medias_sort_attr'])
-    assert [im.dst_filename for im in a.images] == list(reversed(album['medias']))
-
-    settings['medias_sort_attr'] = 'date'
-    settings['medias_sort_reverse'] = False
-    a = Album('dir1/test2', settings, album['subdirs'], album['medias'], gal)
-    a.sort_medias(settings['medias_sort_attr'])
-    assert a.medias[0].src_filename == '22.jpg'
-
-    settings['medias_sort_attr'] = 'meta.order'
-    settings['medias_sort_reverse'] = False
-    a = Album('dir1/test2', settings, album['subdirs'], album['medias'], gal)
-    a.sort_medias(settings['medias_sort_attr'])
+    album = REF["dir1/test2"]
+
+    settings["medias_sort_reverse"] = True
+    a = Album("dir1/test2", settings, album["subdirs"], album["medias"], gal)
+    a.sort_medias(settings["medias_sort_attr"])
+    assert [im.dst_filename for im in a.images] == list(reversed(album["medias"]))
+
+    settings["medias_sort_attr"] = "date"
+    settings["medias_sort_reverse"] = False
+    a = Album("dir1/test2", settings, album["subdirs"], album["medias"], gal)
+    a.sort_medias(settings["medias_sort_attr"])
+    assert a.medias[0].src_filename == "22.jpg"
+
+    settings["medias_sort_attr"] = "meta.order"
+    settings["medias_sort_reverse"] = False
+    a = Album("dir1/test2", settings, album["subdirs"], album["medias"], gal)
+    a.sort_medias(settings["medias_sort_attr"])
     assert [im.dst_filename for im in a.images] == [
-        '21.tiff',
-        '22.jpg',
-        'CMB_Timeline300_no_WMAP.jpg',
+        "21.tiff",
+        "22.jpg",
+        "CMB_Timeline300_no_WMAP.jpg",
     ]
 
 
 def test_gallery(settings, tmp_path, caplog):
     "Test the Gallery class."
 
-    caplog.set_level('ERROR')
-    settings['destination'] = str(tmp_path)
-    settings['user_css'] = str(tmp_path / 'my.css')
-    settings['webm_options'] = ['-missing-option', 'foobar']
+    caplog.set_level("ERROR")
+    settings["destination"] = str(tmp_path)
+    settings["user_css"] = str(tmp_path / "my.css")
+    settings["webm_options"] = ["-missing-option", "foobar"]
     gal = Gallery(settings, ncpu=1)
 
     gal.build()
-    assert re.match(r'CSS file .* could not be found', caplog.records[3].message)
+    assert re.match(r"CSS file .* could not be found", caplog.records[3].message)
 
-    with open(tmp_path / 'my.css', mode='w') as f:
-        f.write('color: red')
+    with open(tmp_path / "my.css", mode="w") as f:
+        f.write("color: red")
 
     gal.build()
 
-    mycss = os.path.join(settings['destination'], 'static', 'my.css')
+    mycss = os.path.join(settings["destination"], "static", "my.css")
     assert os.path.isfile(mycss)
 
-    out_html = os.path.join(settings['destination'], 'index.html')
+    out_html = os.path.join(settings["destination"], "index.html")
     assert os.path.isfile(out_html)
 
     with open(out_html) as f:
         html = f.read()
 
-    assert '<title>Sigal test gallery - Sigal test gallery ☺</title>' in html
+    assert "<title>Sigal test gallery - Sigal test gallery ☺</title>" in html
     assert '<link rel="stylesheet" href="static/my.css">' in html
 
-    logger = logging.getLogger('sigal')
+    logger = logging.getLogger("sigal")
     logger.setLevel(logging.DEBUG)
     try:
         gal = Gallery(settings, ncpu=1)
@@ -328,33 +328,33 @@ def test_gallery(settings, tmp_path, caplog):
 
 
 def test_custom_theme(settings, tmp_path, caplog):
-    theme_path = tmp_path / 'mytheme'
-    tpl_path = theme_path / 'templates'
+    theme_path = tmp_path / "mytheme"
+    tpl_path = theme_path / "templates"
 
-    settings['destination'] = str(tmp_path / 'build')
-    settings['source'] = os.path.join(settings['source'], 'encryptTest')
-    settings['theme'] = str(theme_path)
-    settings['title'] = 'My gallery'
+    settings["destination"] = str(tmp_path / "build")
+    settings["source"] = os.path.join(settings["source"], "encryptTest")
+    settings["theme"] = str(theme_path)
+    settings["title"] = "My gallery"
 
     gal = Gallery(settings, ncpu=1)
 
-    with pytest.raises(Exception, match='Impossible to find the theme'):
+    with pytest.raises(Exception, match="Impossible to find the theme"):
         gal.build()
 
     tpl_path.mkdir(parents=True)
-    (theme_path / 'static').mkdir(parents=True)
+    (theme_path / "static").mkdir(parents=True)
 
     with pytest.raises(SystemExit):
         gal.build()
         assert caplog.records[0].message.startswith(
-            'The template album.html was not found in template folder'
+            "The template album.html was not found in template folder"
         )
 
-    with open(tpl_path / 'album.html', mode='w') as f:
+    with open(tpl_path / "album.html", mode="w") as f:
         f.write(""" {{ settings.title|myfilter }} """)
-    with open(tpl_path / 'album_list.html', mode='w') as f:
+    with open(tpl_path / "album_list.html", mode="w") as f:
         f.write(""" {{ settings.title|myfilter }} """)
-    with open(theme_path / 'filters.py', mode='w') as f:
+    with open(theme_path / "filters.py", mode="w") as f:
         f.write(
             """
 def myfilter(value):
@@ -365,13 +365,13 @@ def myfilter(value):
     gal = Gallery(settings, ncpu=1)
     gal.build()
 
-    out_html = os.path.join(settings['destination'], 'index.html')
+    out_html = os.path.join(settings["destination"], "index.html")
     assert os.path.isfile(out_html)
 
     with open(out_html) as f:
         html = f.read()
 
-    assert 'My gallery is very nice' in html
+    assert "My gallery is very nice" in html
 
 
 def test_gallery_max_img_pixels(settings, tmpdir, monkeypatch):
@@ -379,23 +379,23 @@ def test_gallery_max_img_pixels(settings, tmpdir, monkeypatch):
     # monkeypatch is used here to reset the value to the PIL default.
     # This value does not matter, other than it is "large"
     # to show that settings['max_img_pixels'] works.
-    monkeypatch.setattr('PIL.Image.MAX_IMAGE_PIXELS', 100_000_000)
+    monkeypatch.setattr("PIL.Image.MAX_IMAGE_PIXELS", 100_000_000)
 
-    with open(str(tmpdir.join('my.css')), mode='w') as f:
-        f.write('color: red')
+    with open(str(tmpdir.join("my.css")), mode="w") as f:
+        f.write("color: red")
 
-    settings['destination'] = str(tmpdir)
-    settings['user_css'] = str(tmpdir.join('my.css'))
-    settings['max_img_pixels'] = 5000
+    settings["destination"] = str(tmpdir)
+    settings["user_css"] = str(tmpdir.join("my.css"))
+    settings["max_img_pixels"] = 5000
 
-    logger = logging.getLogger('sigal')
+    logger = logging.getLogger("sigal")
     logger.setLevel(logging.DEBUG)
     try:
         with pytest.raises(PILImage.DecompressionBombError):
             gal = Gallery(settings, ncpu=1)
             gal.build()
 
-        settings['max_img_pixels'] = 100_000_000
+        settings["max_img_pixels"] = 100_000_000
         gal = Gallery(settings, ncpu=1)
         gal.build()
     finally:
@@ -404,19 +404,19 @@ def test_gallery_max_img_pixels(settings, tmpdir, monkeypatch):
 
 def test_empty_dirs(settings):
     gal = Gallery(settings, ncpu=1)
-    assert 'empty' not in gal.albums
-    assert 'dir1/empty' not in gal.albums
+    assert "empty" not in gal.albums
+    assert "dir1/empty" not in gal.albums
 
 
 def test_ignores(settings, tmpdir):
     tmp = str(tmpdir)
-    settings['destination'] = tmp
-    settings['ignore_directories'] = ['*test2', 'accentué']
-    settings['ignore_files'] = ['dir2/Hubble*', '*.png', '*CMB_*']
+    settings["destination"] = tmp
+    settings["ignore_directories"] = ["*test2", "accentué"]
+    settings["ignore_files"] = ["dir2/Hubble*", "*.png", "*CMB_*"]
     gal = Gallery(settings, ncpu=1)
     gal.build()
 
-    assert 'test2' not in os.listdir(join(tmp, 'dir1'))
-    assert 'accentué' not in os.listdir(tmp)
-    assert 'CMB_Timeline300_no_WMAP.jpg' not in os.listdir(join(tmp, 'dir1', 'test1'))
-    assert 'Hubble Interacting Galaxy NGC 5257.jpg' not in os.listdir(join(tmp, 'dir2'))
+    assert "test2" not in os.listdir(join(tmp, "dir1"))
+    assert "accentué" not in os.listdir(tmp)
+    assert "CMB_Timeline300_no_WMAP.jpg" not in os.listdir(join(tmp, "dir1", "test1"))
+    assert "Hubble Interacting Galaxy NGC 5257.jpg" not in os.listdir(join(tmp, "dir2"))
diff --git a/tests/test_image.py b/tests/test_image.py
index 093959c..4bc032c 100644
--- a/tests/test_image.py
+++ b/tests/test_image.py
@@ -19,31 +19,31 @@ from sigal.image import (
 from sigal.settings import Status, create_settings
 
 CURRENT_DIR = os.path.dirname(__file__)
-SRCDIR = os.path.join(CURRENT_DIR, 'sample', 'pictures')
-TEST_IMAGE = 'KeckObservatory20071020.jpg'
-SRCFILE = os.path.join(SRCDIR, 'dir2', TEST_IMAGE)
+SRCDIR = os.path.join(CURRENT_DIR, "sample", "pictures")
+TEST_IMAGE = "KeckObservatory20071020.jpg"
+SRCFILE = os.path.join(SRCDIR, "dir2", TEST_IMAGE)
 
-TEST_GIF_IMAGE = 'example.gif'
-SRC_GIF_FILE = os.path.join(SRCDIR, 'dir1', 'test1', TEST_GIF_IMAGE)
+TEST_GIF_IMAGE = "example.gif"
+SRC_GIF_FILE = os.path.join(SRCDIR, "dir1", "test1", TEST_GIF_IMAGE)
 
 
 def test_process_image(tmpdir):
     "Test the process_image function."
 
-    status = process_image(Image('foo.txt', 'bar', create_settings()))
+    status = process_image(Image("foo.txt", "bar", create_settings()))
     assert status == Status.FAILURE
 
     settings = create_settings(
-        img_processor='ResizeToFill',
+        img_processor="ResizeToFill",
         make_thumbs=False,
-        source=os.path.join(SRCDIR, 'dir2'),
+        source=os.path.join(SRCDIR, "dir2"),
         destination=str(tmpdir),
     )
-    image = Image(TEST_IMAGE, '.', settings)
+    image = Image(TEST_IMAGE, ".", settings)
     status = process_image(image)
     assert status == Status.SUCCESS
     im = PILImage.open(os.path.join(str(tmpdir), TEST_IMAGE))
-    assert im.size == settings['img_size']
+    assert im.size == settings["img_size"]
 
 
 def test_generate_image(tmpdir):
@@ -52,9 +52,9 @@ def test_generate_image(tmpdir):
     dstfile = str(tmpdir.join(TEST_IMAGE))
     for i, size in enumerate([(600, 600), (300, 200)]):
         settings = create_settings(
-            img_size=size, img_processor='ResizeToFill', copy_exif_data=True
+            img_size=size, img_processor="ResizeToFill", copy_exif_data=True
         )
-        options = None if i == 0 else {'quality': 85}
+        options = None if i == 0 else {"quality": 85}
         generate_image(SRCFILE, dstfile, settings, options=options)
         im = PILImage.open(dstfile)
         assert im.size == size
@@ -67,11 +67,11 @@ def test_generate_image_imgformat(tmpdir):
     for i, outfmt in enumerate(["JPEG", "PNG", "TIFF"]):
         settings = create_settings(
             img_size=(300, 300),
-            img_processor='ResizeToFill',
+            img_processor="ResizeToFill",
             copy_exif_data=True,
             img_format=outfmt,
         )
-        options = {'quality': 85}
+        options = {"quality": 85}
         generate_image(SRCFILE, dstfile, settings, options=options)
         im = PILImage.open(dstfile)
         assert im.format == outfmt
@@ -82,9 +82,9 @@ def test_resize_image_portrait(tmpdir):
     size = (300, 200)
     settings = create_settings(img_size=size)
 
-    portrait_image = 'm57_the_ring_nebula-587px.jpg'
+    portrait_image = "m57_the_ring_nebula-587px.jpg"
     portrait_src = os.path.join(
-        CURRENT_DIR, 'sample', 'pictures', 'dir2', portrait_image
+        CURRENT_DIR, "sample", "pictures", "dir2", portrait_image
     )
     portrait_dst = str(tmpdir.join(portrait_image))
 
@@ -96,9 +96,9 @@ def test_resize_image_portrait(tmpdir):
     # Hence we test that the shorter side has the smallest length.
     assert im.size[0] == 200
 
-    landscape_image = 'KeckObservatory20071020.jpg'
+    landscape_image = "KeckObservatory20071020.jpg"
     landscape_src = os.path.join(
-        CURRENT_DIR, 'sample', 'pictures', 'dir2', landscape_image
+        CURRENT_DIR, "sample", "pictures", "dir2", landscape_image
     )
     landscape_dst = str(tmpdir.join(landscape_image))
 
@@ -137,9 +137,9 @@ def test_generate_image_passthrough_symlink(tmpdir):
 def test_generate_image_processor(tmpdir):
     "Test generate_image with a wrong processor name."
 
-    init_logging('sigal')
+    init_logging("sigal")
     dstfile = str(tmpdir.join(TEST_IMAGE))
-    settings = create_settings(img_size=(200, 200), img_processor='WrongMethod')
+    settings = create_settings(img_size=(200, 200), img_processor="WrongMethod")
 
     with pytest.raises(SystemExit):
         generate_image(SRCFILE, dstfile, settings)
@@ -168,123 +168,123 @@ def test_generate_thumbnail(tmpdir, image, path, wide_size, high_size):
 
 
 def test_get_exif_tags():
-    test_image = '11.jpg'
+    test_image = "11.jpg"
     src_file = os.path.join(
-        CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', test_image
+        CURRENT_DIR, "sample", "pictures", "dir1", "test1", test_image
     )
     data = get_exif_data(src_file)
-    simple = get_exif_tags(data, datetime_format='%d/%m/%Y')
-    assert simple['fstop'] == 3.9
-    assert simple['focal'] == 12.0
-    assert simple['iso'] == 50
-    assert simple['Make'] == 'NIKON'
-    assert simple['datetime'] == '22/01/2006'
+    simple = get_exif_tags(data, datetime_format="%d/%m/%Y")
+    assert simple["fstop"] == 3.9
+    assert simple["focal"] == 12.0
+    assert simple["iso"] == 50
+    assert simple["Make"] == "NIKON"
+    assert simple["datetime"] == "22/01/2006"
     try:
         # Pillow 7.2+
-        assert simple['exposure'] == '0.00100603'
+        assert simple["exposure"] == "0.00100603"
     except Exception:
-        assert simple['exposure'] == '100603/100000000'
+        assert simple["exposure"] == "100603/100000000"
 
-    data = {'FNumber': [1, 0], 'FocalLength': [1, 0], 'ExposureTime': 10}
+    data = {"FNumber": [1, 0], "FocalLength": [1, 0], "ExposureTime": 10}
     simple = get_exif_tags(data)
-    assert 'fstop' not in simple
-    assert 'focal' not in simple
-    assert simple['exposure'] == '10'
+    assert "fstop" not in simple
+    assert "focal" not in simple
+    assert simple["exposure"] == "10"
 
     data = {
-        'ExposureTime': '--',
-        'DateTimeOriginal': '---',
-        'GPSInfo': {
-            'GPSLatitude': ((34, 0), (1, 0), (4500, 100)),
-            'GPSLatitudeRef': 'N',
-            'GPSLongitude': ((116, 0), (8, 0), (3900, 100)),
-            'GPSLongitudeRef': 'W',
+        "ExposureTime": "--",
+        "DateTimeOriginal": "---",
+        "GPSInfo": {
+            "GPSLatitude": ((34, 0), (1, 0), (4500, 100)),
+            "GPSLatitudeRef": "N",
+            "GPSLongitude": ((116, 0), (8, 0), (3900, 100)),
+            "GPSLongitudeRef": "W",
         },
     }
     simple = get_exif_tags(data)
-    assert 'exposure' not in simple
-    assert 'datetime' not in simple
-    assert 'gps' not in simple
+    assert "exposure" not in simple
+    assert "datetime" not in simple
+    assert "gps" not in simple
 
 
 def test_get_iptc_data(caplog):
-    test_image = '1.jpg'
-    src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'iptcTest', test_image)
+    test_image = "1.jpg"
+    src_file = os.path.join(CURRENT_DIR, "sample", "pictures", "iptcTest", test_image)
     data = get_iptc_data(src_file)
     # Title
     assert (
         data["title"]
-        == 'Haemostratulus clouds over Canberra - ' + '2005-12-28 at 03-25-07'
+        == "Haemostratulus clouds over Canberra - " + "2005-12-28 at 03-25-07"
     )
     # Description
     assert (
         data["description"]
         == '"Haemo" because they look like haemoglobin '
         + 'cells and "stratulus" because I can\'t work out whether '
-        + 'they\'re Stratus or Cumulus clouds.\nWe\'re driving down '
-        + 'the main drag in Canberra so it\'s Parliament House that '
-        + 'you can see at the end of the road.'
+        + "they're Stratus or Cumulus clouds.\nWe're driving down "
+        + "the main drag in Canberra so it's Parliament House that "
+        + "you can see at the end of the road."
     )
     # This file has no IPTC data
-    test_image = '21.jpg'
-    src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'exifTest', test_image)
+    test_image = "21.jpg"
+    src_file = os.path.join(CURRENT_DIR, "sample", "pictures", "exifTest", test_image)
     assert get_iptc_data(src_file) == {}
 
     # Headline
-    test_image = '3.jpg'
-    src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'iptcTest', test_image)
+    test_image = "3.jpg"
+    src_file = os.path.join(CURRENT_DIR, "sample", "pictures", "iptcTest", test_image)
     data = get_iptc_data(src_file)
-    assert data["headline"] == 'Ring Nebula, M57'
+    assert data["headline"] == "Ring Nebula, M57"
 
     # Test catching the SyntaxError -- assert output
-    with patch('sigal.image.IptcImagePlugin.getiptcinfo', side_effect=SyntaxError):
+    with patch("sigal.image.IptcImagePlugin.getiptcinfo", side_effect=SyntaxError):
         get_iptc_data(src_file)
-        assert ['IPTC Error in'] == [log.message[:13] for log in caplog.records]
+        assert ["IPTC Error in"] == [log.message[:13] for log in caplog.records]
 
 
 def test_get_image_metadata_exceptions():
     # image does not exist
-    test_image = 'bad_image.jpg'
-    src_file = os.path.join(CURRENT_DIR, 'sample', test_image)
+    test_image = "bad_image.jpg"
+    src_file = os.path.join(CURRENT_DIR, "sample", test_image)
     data = get_image_metadata(src_file)
-    assert data == {'exif': {}, 'iptc': {}, 'size': {}}
+    assert data == {"exif": {}, "iptc": {}, "size": {}}
 
 
 def test_iso_speed_ratings():
-    data = {'ISOSpeedRatings': ()}
+    data = {"ISOSpeedRatings": ()}
     simple = get_exif_tags(data)
-    assert 'iso' not in simple
+    assert "iso" not in simple
 
-    data = {'ISOSpeedRatings': None}
+    data = {"ISOSpeedRatings": None}
     simple = get_exif_tags(data)
-    assert 'iso' not in simple
+    assert "iso" not in simple
 
-    data = {'ISOSpeedRatings': 125}
+    data = {"ISOSpeedRatings": 125}
     simple = get_exif_tags(data)
-    assert 'iso' in simple
+    assert "iso" in simple
 
 
 def test_null_exposure_time():
-    data = {'ExposureTime': (0, 0)}
+    data = {"ExposureTime": (0, 0)}
     simple = get_exif_tags(data)
-    assert 'exposure' not in simple
+    assert "exposure" not in simple
 
 
 def test_exif_copy(tmpdir):
     "Test if EXIF data can transferred copied to the resized image."
 
-    test_image = '11.jpg'
+    test_image = "11.jpg"
     src_file = os.path.join(
-        CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', test_image
+        CURRENT_DIR, "sample", "pictures", "dir1", "test1", test_image
     )
     dst_file = str(tmpdir.join(test_image))
 
     settings = create_settings(img_size=(300, 400), copy_exif_data=True)
     generate_image(src_file, dst_file, settings)
     simple = get_exif_tags(get_exif_data(dst_file))
-    assert simple['iso'] == 50
+    assert simple["iso"] == 50
 
-    settings['copy_exif_data'] = False
+    settings["copy_exif_data"] = False
     generate_image(src_file, dst_file, settings)
     simple = get_exif_tags(get_exif_data(dst_file))
     assert not simple
@@ -293,40 +293,40 @@ def test_exif_copy(tmpdir):
 def test_exif_gps(tmpdir):
     """Test reading out correct geo tags"""
 
-    test_image = 'flickr_jerquiaga_2394751088_cc-by-nc.jpg'
+    test_image = "flickr_jerquiaga_2394751088_cc-by-nc.jpg"
     src_file = os.path.join(
-        CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', test_image
+        CURRENT_DIR, "sample", "pictures", "dir1", "test1", test_image
     )
     dst_file = str(tmpdir.join(test_image))
 
     settings = create_settings(img_size=(400, 300), copy_exif_data=True)
     generate_image(src_file, dst_file, settings)
     simple = get_exif_tags(get_exif_data(dst_file))
-    assert 'gps' in simple
+    assert "gps" in simple
 
     lat = 34.029167
     lon = -116.144167
 
-    assert abs(simple['gps']['lat'] - lat) < 0.0001
-    assert abs(simple['gps']['lon'] - lon) < 0.0001
+    assert abs(simple["gps"]["lat"] - lat) < 0.0001
+    assert abs(simple["gps"]["lon"] - lon) < 0.0001
 
 
 def test_get_size(tmpdir):
     """Test reading out image size"""
 
-    test_image = 'flickr_jerquiaga_2394751088_cc-by-nc.jpg'
+    test_image = "flickr_jerquiaga_2394751088_cc-by-nc.jpg"
     src_file = os.path.join(
-        CURRENT_DIR, 'sample', 'pictures', 'dir1', 'test1', test_image
+        CURRENT_DIR, "sample", "pictures", "dir1", "test1", test_image
     )
 
     result = get_size(src_file)
-    assert result == {'height': 800, 'width': 600}
+    assert result == {"height": 800, "width": 600}
 
 
 def test_get_size_with_invalid_path(tmpdir):
     """Test reading out image size with a missing file"""
 
-    test_image = 'missing-file.jpg'
+    test_image = "missing-file.jpg"
     src_file = os.path.join(CURRENT_DIR, test_image)
 
     result = get_size(src_file)
diff --git a/tests/test_plugins.py b/tests/test_plugins.py
index c65a3bd..1e464c2 100644
--- a/tests/test_plugins.py
+++ b/tests/test_plugins.py
@@ -7,18 +7,18 @@ CURRENT_DIR = os.path.dirname(__file__)
 
 
 def test_plugins(settings, tmpdir, disconnect_signals):
-    settings['destination'] = str(tmpdir)
+    settings["destination"] = str(tmpdir)
     if "sigal.plugins.nomedia" not in settings["plugins"]:
-        settings['plugins'] += ["sigal.plugins.nomedia"]
+        settings["plugins"] += ["sigal.plugins.nomedia"]
     if "sigal.plugins.media_page" not in settings["plugins"]:
-        settings['plugins'] += ["sigal.plugins.media_page"]
+        settings["plugins"] += ["sigal.plugins.media_page"]
 
     init_plugins(settings)
     gal = Gallery(settings)
     gal.build()
 
     out_html = os.path.join(
-        settings['destination'], 'dir2', 'KeckObservatory20071020.jpg.html'
+        settings["destination"], "dir2", "KeckObservatory20071020.jpg.html"
     )
     assert os.path.isfile(out_html)
 
@@ -30,30 +30,30 @@ def test_plugins(settings, tmpdir, disconnect_signals):
 
 
 def test_nonmedia_files(settings, tmpdir, disconnect_signals):
-    settings['destination'] = str(tmpdir)
-    settings['plugins'] += ['sigal.plugins.nonmedia_files']
-    settings['nonmedia_files_options'] = {'thumb_bg_color': 'red'}
+    settings["destination"] = str(tmpdir)
+    settings["plugins"] += ["sigal.plugins.nonmedia_files"]
+    settings["nonmedia_files_options"] = {"thumb_bg_color": "red"}
 
     init_plugins(settings)
 
     gal = Gallery(settings)
     gal.build()
 
-    outfile = os.path.join(settings['destination'], 'nonmedia_files', 'dummy.pdf')
+    outfile = os.path.join(settings["destination"], "nonmedia_files", "dummy.pdf")
     assert os.path.isfile(outfile)
 
     outthumb = os.path.join(
-        settings['destination'], 'nonmedia_files', 'thumbnails', 'dummy.tn.jpg'
+        settings["destination"], "nonmedia_files", "thumbnails", "dummy.tn.jpg"
     )
     assert os.path.isfile(outthumb)
 
 
 def test_titleregexp(settings, tmpdir, disconnect_signals):
     if "sigal.plugins.titleregexp" not in settings["plugins"]:
-        settings['plugins'] += ["sigal.plugins.titleregexp"]
+        settings["plugins"] += ["sigal.plugins.titleregexp"]
 
     init_plugins(settings)
     gal = Gallery(settings)
     gal.build()
 
-    assert gal.albums.get('dir1').albums[1].title == "titleregexp 02"
+    assert gal.albums.get("dir1").albums[1].title == "titleregexp 02"
diff --git a/tests/test_settings.py b/tests/test_settings.py
index 7b179ff..2ee7872 100644
--- a/tests/test_settings.py
+++ b/tests/test_settings.py
@@ -7,26 +7,26 @@ CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
 
 def test_read_settings(settings):
     """Test that the settings are correctly read."""
-    assert settings['img_size'] == (640, 480)
-    assert settings['thumb_size'] == (200, 150)
-    assert settings['thumb_suffix'] == '.tn'
-    assert settings['source'] == os.path.join(CURRENT_DIR, 'sample', 'pictures')
+    assert settings["img_size"] == (640, 480)
+    assert settings["thumb_size"] == (200, 150)
+    assert settings["thumb_suffix"] == ".tn"
+    assert settings["source"] == os.path.join(CURRENT_DIR, "sample", "pictures")
 
 
 def test_get_thumb(settings):
     """Test the get_thumb function."""
     tests = [
-        ('example.jpg', 'thumbnails/example.tn.jpg'),
-        ('test/example.jpg', 'test/thumbnails/example.tn.jpg'),
-        ('test/t/example.jpg', 'test/t/thumbnails/example.tn.jpg'),
+        ("example.jpg", "thumbnails/example.tn.jpg"),
+        ("test/example.jpg", "test/thumbnails/example.tn.jpg"),
+        ("test/t/example.jpg", "test/t/thumbnails/example.tn.jpg"),
     ]
     for src, ref in tests:
         assert get_thumb(settings, src) == ref
 
     tests = [
-        ('example.webm', 'thumbnails/example.tn.jpg'),
-        ('test/example.mp4', 'test/thumbnails/example.tn.jpg'),
-        ('test/t/example.avi', 'test/t/thumbnails/example.tn.jpg'),
+        ("example.webm", "thumbnails/example.tn.jpg"),
+        ("test/example.mp4", "test/thumbnails/example.tn.jpg"),
+        ("test/t/example.avi", "test/t/thumbnails/example.tn.jpg"),
     ]
     for src, ref in tests:
         assert get_thumb(settings, src) == ref
@@ -35,20 +35,20 @@ def test_get_thumb(settings):
 def test_img_sizes(tmpdir):
     """Test that image size is swaped if needed."""
 
-    conf = tmpdir.join('sigal.conf.py')
+    conf = tmpdir.join("sigal.conf.py")
     conf.write("thumb_size = (150, 200)")
 
     settings = read_settings(str(conf))
-    assert settings['thumb_size'] == (200, 150)
+    assert settings["thumb_size"] == (200, 150)
 
 
 def test_theme_path(tmpdir):
     """Test that image size is swaped if needed."""
 
-    tmpdir.join('theme').mkdir()
-    tmpdir.join('theme').join('templates').mkdir()
-    conf = tmpdir.join('sigal.conf.py')
+    tmpdir.join("theme").mkdir()
+    tmpdir.join("theme").join("templates").mkdir()
+    conf = tmpdir.join("sigal.conf.py")
     conf.write("theme = 'theme'")
 
     settings = read_settings(str(conf))
-    assert settings['theme'] == tmpdir.join('theme')
+    assert settings["theme"] == tmpdir.join("theme")
diff --git a/tests/test_utils.py b/tests/test_utils.py
index e782612..b47f709 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -4,39 +4,39 @@ from pathlib import Path
 from sigal import utils
 
 CURRENT_DIR = os.path.dirname(__file__)
-SAMPLE_DIR = os.path.join(CURRENT_DIR, 'sample')
+SAMPLE_DIR = os.path.join(CURRENT_DIR, "sample")
 
 
 def test_copy(tmpdir):
-    filename = 'KeckObservatory20071020.jpg'
-    src = os.path.join(SAMPLE_DIR, 'pictures', 'dir2', filename)
+    filename = "KeckObservatory20071020.jpg"
+    src = os.path.join(SAMPLE_DIR, "pictures", "dir2", filename)
     dst = str(tmpdir.join(filename))
     utils.copy(src, dst)
     assert os.path.isfile(dst)
 
-    filename = 'm57_the_ring_nebula-587px.jpg'
-    src = os.path.join(SAMPLE_DIR, 'pictures', 'dir2', filename)
+    filename = "m57_the_ring_nebula-587px.jpg"
+    src = os.path.join(SAMPLE_DIR, "pictures", "dir2", filename)
     dst = str(tmpdir.join(filename))
     utils.copy(src, dst, symlink=True)
     assert os.path.islink(dst)
     assert os.readlink(dst) == src
 
-    filename = 'KeckObservatory20071020.jpg'
-    src = os.path.join(SAMPLE_DIR, 'pictures', 'dir2', filename)
+    filename = "KeckObservatory20071020.jpg"
+    src = os.path.join(SAMPLE_DIR, "pictures", "dir2", filename)
     utils.copy(src, dst, symlink=True)
     assert os.path.islink(dst)
     assert os.readlink(dst) == src
 
-    filename = 'KeckObservatory20071020.jpg'
-    src = os.path.join(SAMPLE_DIR, 'pictures', 'dir2', filename)
+    filename = "KeckObservatory20071020.jpg"
+    src = os.path.join(SAMPLE_DIR, "pictures", "dir2", filename)
     dst = str(tmpdir.join(filename))
     utils.copy(src, dst, symlink=True, rellink=True)
     assert os.path.islink(dst)
     assert os.path.join(os.path.dirname(CURRENT_DIR)), os.readlink(dst) == src
     # get absolute path of the current dir plus the relative dir
 
-    src = str(tmpdir.join('foo.txt'))
-    dst = str(tmpdir.join('bar.txt'))
+    src = str(tmpdir.join("foo.txt"))
+    dst = str(tmpdir.join("bar.txt"))
     p = Path(src)
     p.touch()
     p.chmod(0o444)
@@ -45,48 +45,48 @@ def test_copy(tmpdir):
 
 
 def test_check_or_create_dir(tmpdir):
-    path = str(tmpdir.join('new_directory'))
+    path = str(tmpdir.join("new_directory"))
     utils.check_or_create_dir(path)
     assert os.path.isdir(path)
 
 
 def test_url_from_path():
-    assert utils.url_from_path(os.sep.join(['foo', 'bar'])) == 'foo/bar'
+    assert utils.url_from_path(os.sep.join(["foo", "bar"])) == "foo/bar"
 
 
 def test_url_from_windows_path(monkeypatch):
-    monkeypatch.setattr('os.sep', "\\")
-    path = os.sep.join(['foo', 'bar'])
-    assert path == r'foo\bar'
-    assert utils.url_from_path(path) == 'foo/bar'
+    monkeypatch.setattr("os.sep", "\\")
+    path = os.sep.join(["foo", "bar"])
+    assert path == r"foo\bar"
+    assert utils.url_from_path(path) == "foo/bar"
 
 
 def test_read_markdown():
-    src = os.path.join(SAMPLE_DIR, 'pictures', 'dir1', 'test1', '11.md')
+    src = os.path.join(SAMPLE_DIR, "pictures", "dir1", "test1", "11.md")
     m = utils.read_markdown(src)
-    assert m['title'] == "Foo Bar"
-    assert m['meta']['location'][0] == "Bavaria"
-    assert m['description'] == "<p>This is a funny description of this image</p>"
+    assert m["title"] == "Foo Bar"
+    assert m["meta"]["location"][0] == "Bavaria"
+    assert m["description"] == "<p>This is a funny description of this image</p>"
 
 
 def test_read_markdown_empty_file(tmpdir):
     src = tmpdir.join("file.txt")
     src.write("content")
     m = utils.read_markdown(str(src))
-    assert 'title' not in m
-    assert m['meta'] == {}
-    assert m['description'] == '<p>content</p>'
+    assert "title" not in m
+    assert m["meta"] == {}
+    assert m["description"] == "<p>content</p>"
 
     src = tmpdir.join("empty.txt")
     src.write("")
     m = utils.read_markdown(str(src))
-    assert 'title' not in m
+    assert "title" not in m
     # See https://github.com/Python-Markdown/markdown/pull/672
     # Meta attributes should always be there
-    assert m['meta'] == {}
-    assert m['description'] == ''
+    assert m["meta"] == {}
+    assert m["description"] == ""
 
 
 def test_is_valid_html5_video():
-    assert utils.is_valid_html5_video('.webm') is True
-    assert utils.is_valid_html5_video('.mpeg') is False
+    assert utils.is_valid_html5_video(".webm") is True
+    assert utils.is_valid_html5_video(".mpeg") is False
diff --git a/tests/test_video.py b/tests/test_video.py
index 7d161e4..f7dedfd 100644
--- a/tests/test_video.py
+++ b/tests/test_video.py
@@ -9,20 +9,20 @@ from sigal.settings import Status, create_settings
 from sigal.video import generate_thumbnail, generate_video, process_video, video_size
 
 CURRENT_DIR = os.path.dirname(__file__)
-SRCDIR = os.path.join(CURRENT_DIR, 'sample', 'pictures')
-TEST_VIDEO = 'example video.ogv'
-SRCFILE = os.path.join(SRCDIR, 'video', TEST_VIDEO)
+SRCDIR = os.path.join(CURRENT_DIR, "sample", "pictures")
+TEST_VIDEO = "example video.ogv"
+SRCFILE = os.path.join(SRCDIR, "video", TEST_VIDEO)
 
 
 def test_video_size():
     size_src = video_size(SRCFILE)
     assert size_src == (320, 240)
-    size_src = video_size('missing/file.mp4')
+    size_src = video_size("missing/file.mp4")
     assert size_src == (0, 0)
 
 
 def test_generate_thumbnail(tmpdir):
-    outname = str(tmpdir.join('test.jpg'))
+    outname = str(tmpdir.join("test.jpg"))
     generate_thumbnail(SRCFILE, outname, (50, 50), 5)
     assert os.path.isfile(outname)
 
@@ -31,18 +31,18 @@ def test_process_video(tmpdir):
     base, ext = os.path.splitext(TEST_VIDEO)
 
     settings = create_settings(
-        video_format='ogv',
+        video_format="ogv",
         use_orig=True,
         orig_link=True,
-        source=os.path.join(SRCDIR, 'video'),
+        source=os.path.join(SRCDIR, "video"),
         destination=str(tmpdir),
     )
-    video = Video(TEST_VIDEO, '.', settings)
+    video = Video(TEST_VIDEO, ".", settings)
     process_video(video)
-    dstfile = str(tmpdir.join(base + '.ogv'))
+    dstfile = str(tmpdir.join(base + ".ogv"))
     assert os.path.realpath(dstfile) == SRCFILE
 
-    settings = create_settings(video_format='mjpg')
+    settings = create_settings(video_format="mjpg")
     assert process_video(video) == Status.FAILURE
 
     settings = create_settings(thumb_video_delay=-1)
@@ -53,23 +53,23 @@ def test_metadata(tmpdir):
     base, ext = os.path.splitext(TEST_VIDEO)
 
     settings = create_settings(
-        video_format='ogv',
+        video_format="ogv",
         use_orig=True,
         orig_link=True,
-        source=os.path.join(SRCDIR, 'video'),
+        source=os.path.join(SRCDIR, "video"),
         destination=str(tmpdir),
     )
-    video = Video(TEST_VIDEO, '.', settings)
-    assert video.meta == {'date': ['2020-01-01T09:00:00']}
+    video = Video(TEST_VIDEO, ".", settings)
+    assert video.meta == {"date": ["2020-01-01T09:00:00"]}
     assert video.date == datetime(2020, 1, 1, 9, 0)
 
 
-@pytest.mark.parametrize("fmt", ['webm', 'mp4'])
+@pytest.mark.parametrize("fmt", ["webm", "mp4"])
 def test_generate_video_fit_height(tmpdir, fmt):
     """largest fitting dimension is height"""
 
     base, ext = os.path.splitext(TEST_VIDEO)
-    dstfile = str(tmpdir.join(base + '.' + fmt))
+    dstfile = str(tmpdir.join(base + "." + fmt))
     settings = create_settings(video_size=(80, 100), video_format=fmt)
     generate_video(SRCFILE, dstfile, settings)
 
@@ -81,12 +81,12 @@ def test_generate_video_fit_height(tmpdir, fmt):
     assert abs(size_dst[0] / size_dst[1] - size_src[0] / size_src[1]) < 2e-2
 
 
-@pytest.mark.parametrize("fmt", ['webm', 'mp4'])
+@pytest.mark.parametrize("fmt", ["webm", "mp4"])
 def test_generate_video_fit_width(tmpdir, fmt):
     """largest fitting dimension is width"""
 
     base, ext = os.path.splitext(TEST_VIDEO)
-    dstfile = str(tmpdir.join(base + '.' + fmt))
+    dstfile = str(tmpdir.join(base + "." + fmt))
     settings = create_settings(video_size=(100, 50), video_format=fmt)
     generate_video(SRCFILE, dstfile, settings)
 
@@ -98,12 +98,12 @@ def test_generate_video_fit_width(tmpdir, fmt):
     assert abs(size_dst[0] / size_dst[1] - size_src[0] / size_src[1]) < 2e-2
 
 
-@pytest.mark.parametrize("fmt", ['webm', 'mp4', 'ogv'])
+@pytest.mark.parametrize("fmt", ["webm", "mp4", "ogv"])
 def test_generate_video_dont_enlarge(tmpdir, fmt):
     """Video dimensions should not be enlarged."""
 
     base, ext = os.path.splitext(TEST_VIDEO)
-    dstfile = str(tmpdir.join(base + '.' + fmt))
+    dstfile = str(tmpdir.join(base + "." + fmt))
     settings = create_settings(video_size=(1000, 1000), video_format=fmt)
     generate_video(SRCFILE, dstfile, settings)
     size_src = video_size(SRCFILE)
@@ -112,19 +112,19 @@ def test_generate_video_dont_enlarge(tmpdir, fmt):
     assert size_src == size_dst
 
 
-@patch('sigal.video.generate_video_pass')
-@pytest.mark.parametrize("fmt", ['webm', 'mp4'])
+@patch("sigal.video.generate_video_pass")
+@pytest.mark.parametrize("fmt", ["webm", "mp4"])
 def test_second_pass_video(mock_generate_video_pass, fmt, tmpdir):
     """Video should be run through ffmpeg."""
     base, ext = os.path.splitext(TEST_VIDEO)
-    dstfile = str(tmpdir.join(base + '.' + fmt))
-    settings_1 = '-c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null dev/null'
-    settings_2 = f'-c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -f {fmt}'
+    dstfile = str(tmpdir.join(base + "." + fmt))
+    settings_1 = "-c:v libvpx-vp9 -b:v 0 -crf 30 -pass 1 -an -f null dev/null"
+    settings_2 = f"-c:v libvpx-vp9 -b:v 0 -crf 30 -pass 2 -f {fmt}"
     settings_opts = {
-        'video_size': (100, 50),
-        'video_format': fmt,
-        fmt + '_options': settings_1.split(" "),
-        fmt + '_options_second_pass': settings_2.split(" "),
+        "video_size": (100, 50),
+        "video_format": fmt,
+        fmt + "_options": settings_1.split(" "),
+        fmt + "_options_second_pass": settings_2.split(" "),
     }
 
     settings = create_settings(**settings_opts)
diff --git a/tests/test_zip.py b/tests/test_zip.py
index b37742f..b46ad48 100644
--- a/tests/test_zip.py
+++ b/tests/test_zip.py
@@ -6,14 +6,14 @@ from sigal.gallery import Gallery
 from sigal.settings import read_settings
 
 CURRENT_DIR = os.path.dirname(__file__)
-SAMPLE_DIR = os.path.join(CURRENT_DIR, 'sample')
-SAMPLE_SOURCE = os.path.join(SAMPLE_DIR, 'pictures')
+SAMPLE_DIR = os.path.join(CURRENT_DIR, "sample")
+SAMPLE_SOURCE = os.path.join(SAMPLE_DIR, "pictures")
 
 
-def make_gallery(source_dir='dir1', **kwargs):
-    default_conf = os.path.join(SAMPLE_DIR, 'sigal.conf.py')
+def make_gallery(source_dir="dir1", **kwargs):
+    default_conf = os.path.join(SAMPLE_DIR, "sigal.conf.py")
     settings = read_settings(default_conf)
-    settings['source'] = os.path.join(SAMPLE_SOURCE, source_dir)
+    settings["source"] = os.path.join(SAMPLE_SOURCE, source_dir)
     settings.update(kwargs)
     init_plugins(settings)
     return Gallery(settings, ncpu=1)
@@ -21,18 +21,18 @@ def make_gallery(source_dir='dir1', **kwargs):
 
 def test_zipped_correctly(tmpdir):
     outpath = str(tmpdir)
-    gallery = make_gallery(destination=outpath, zip_gallery='archive.zip')
+    gallery = make_gallery(destination=outpath, zip_gallery="archive.zip")
     gallery.build()
 
-    zipf = os.path.join(outpath, 'test1', 'archive.zip')
+    zipf = os.path.join(outpath, "test1", "archive.zip")
     assert os.path.isfile(zipf)
 
-    zip_file = zipfile.ZipFile(zipf, 'r')
+    zip_file = zipfile.ZipFile(zipf, "r")
     expected = (
-        '11.jpg',
-        'CMB_Timeline300_no_WMAP.jpg',
-        'flickr_jerquiaga_2394751088_cc-by-nc.jpg',
-        'example.gif',
+        "11.jpg",
+        "CMB_Timeline300_no_WMAP.jpg",
+        "flickr_jerquiaga_2394751088_cc-by-nc.jpg",
+        "example.gif",
     )
 
     for filename in zip_file.namelist():
@@ -40,7 +40,7 @@ def test_zipped_correctly(tmpdir):
 
     zip_file.close()
 
-    assert os.path.isfile(os.path.join(outpath, 'test2', 'archive.zip'))
+    assert os.path.isfile(os.path.join(outpath, "test2", "archive.zip"))
 
 
 def test_not_zipped(tmpdir):
@@ -48,10 +48,10 @@ def test_not_zipped(tmpdir):
     # is present
     outpath = str(tmpdir)
     gallery = make_gallery(
-        destination=outpath, zip_gallery='archive.zip', source_dir='dir2'
+        destination=outpath, zip_gallery="archive.zip", source_dir="dir2"
     )
     gallery.build()
-    assert not os.path.isfile(os.path.join(outpath, 'archive.zip'))
+    assert not os.path.isfile(os.path.join(outpath, "archive.zip"))
 
 
 def test_no_archive(tmpdir):
@@ -59,16 +59,16 @@ def test_no_archive(tmpdir):
     gallery = make_gallery(destination=outpath, zip_gallery=False)
     gallery.build()
 
-    assert not os.path.isfile(os.path.join(outpath, 'test1', 'archive.zip'))
-    assert not os.path.isfile(os.path.join(outpath, 'test2', 'archive.zip'))
+    assert not os.path.isfile(os.path.join(outpath, "test1", "archive.zip"))
+    assert not os.path.isfile(os.path.join(outpath, "test2", "archive.zip"))
 
 
 def test_correct_filename(tmpdir, caplog):
-    caplog.set_level('ERROR')
+    caplog.set_level("ERROR")
     outpath = str(tmpdir)
     gallery = make_gallery(destination=outpath, zip_gallery=True)
     gallery.build()
 
     assert caplog.records[0].message == "'zip_gallery' should be set to a filename"
-    assert not os.path.isfile(os.path.join(outpath, 'test1', 'archive.zip'))
-    assert not os.path.isfile(os.path.join(outpath, 'test2', 'archive.zip'))
+    assert not os.path.isfile(os.path.join(outpath, "test1", "archive.zip"))
+    assert not os.path.isfile(os.path.join(outpath, "test2", "archive.zip"))