diff --git a/README.md b/README.md
index 2393325..457c5ce 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,9 @@
 - **License Information:** Optionally include license information in the HTML files.
 - **Custom Author and Title:** Allows specifying a custom author and title for the HTML files.
 - **CSS Theme Support:** Allows specifying a custom CSS theme file for the HTML files.
+- **Folder Exclusion:** Ability to exclude specific folders from processing.
+- **Selective File Extensions:** Ability to specify which file extensions to include in the gallery.
+- **Ignore Other Files:** Option to ignore files other than those specified by the included extensions.
 
 ## Requirements
 
@@ -34,47 +37,56 @@ pip install numpy tqdm Jinja2
 The script supports several command-line options to customize its behavior. Below is the list of available options:
 
 ```sh
-./generate_html.py [-h] [-p ROOT] [-w WEBROOT] [-i ICON] [-r] [-n] [--fancyfolders] [-l LICENSE] [-a AUTHOR] [-t TITLE] [--theme THEME]
+./generate_html.py [-h] -p ROOT -w WEBROOT -t TITLE [-i ICON] [-r] [-n] [--fancyfolders] [-l LICENSE] [-a AUTHOR] [-e EXTENSION] [--theme THEME] [--ignore-other-files] [--exclude EXCLUDE]
 ```
 
 ### Options
 
 - `-h, --help`: Show the help message and exit.
-- `-p ROOT, --root ROOT`: Specify the root folder where the images are stored. Default is `/data/pictures/`.
-- `-w WEBROOT, --webroot WEBROOT`: Specify the web root URL where the images will be accessible. Default is `https://pictures.example.com/`.
+- `-p ROOT, --root ROOT`: Specify the root folder where the images are stored. This option is required.
+- `-w WEBROOT, --webroot WEBROOT`: Specify the web root URL where the images will be accessible. This option is required.
+- `-t TITLE, --title TITLE`: Specify the title for the root directory HTML file. This option is required.
 - `-i ICON, --foldericon ICON`: Specify the URL for the folder icon. Default is `https://www.svgrepo.com/show/400249/folder.svg`.
 - `-r, --regenerate`: Regenerate thumbnails even if they already exist.
 - `-n, --non-interactive`: Disable interactive mode, which is useful for automated workflows.
 - `--fancyfolders`: Use fancy folders instead of the default Apache directory listing.
 - `-l LICENSE, --license LICENSE`: Specify a license for the content. Options are `cc-zero`, `cc-by`, `cc-by-sa`, `cc-by-nd`, `cc-by-nc`, `cc-by-nc-sa`, and `cc-by-nc-nd`.
-- `-a AUTHOR, --author AUTHOR`: Specify the author of the content.
-- `-t TITLE, --title TITLE`: Specify the title for the root directory HTML file.
+- `-a AUTHOR, --author AUTHOR`: Specify the author of the content. Default is "Author".
+- `-e EXTENSION, --extension EXTENSION`: Specify file extensions to include. This option can be used multiple times.
 - `--theme THEME`: Specify the path to a custom CSS theme file. Default is `themes/default.css`.
+- `--ignore-other-files`: Ignore files other than those specified by the included extensions.
+- `--exclude EXCLUDE`: Exclude folders from processing. Only provide the basename of the folders you want to exclude. This option can be used multiple times.
 
 ### Example
 
 To generate HTML files and thumbnails for a directory `/data/pictures` and host them on `https://pictures.example.com`, run:
 
 ```sh
-./generate_html.py -p /data/pictures -w https://pictures.example.com
+./generate_html.py -p /data/pictures -w https://pictures.example.com -t "My Photo Gallery"
 ```
 
 To regenerate thumbnails and run in non-interactive mode:
 
 ```sh
-./generate_html.py -p /data/pictures -w https://pictures.example.com -r -n
+./generate_html.py -p /data/pictures -w https://pictures.example.com -t "My Photo Gallery" -r -n
 ```
 
 To include a license, author, and custom title:
 
 ```sh
-./generate_html.py -p /data/pictures -w https://pictures.example.com -l cc-by -a "John Doe" -t "My Photo Gallery"
+./generate_html.py -p /data/pictures -w https://pictures.example.com -t "My Photo Gallery" -l cc-by -a "John Doe"
 ```
 
 To specify a custom CSS theme:
 
 ```sh
-./generate_html.py -p /data/pictures -w https://pictures.example.com --theme custom_theme.css
+./generate_html.py -p /data/pictures -w https://pictures.example.com -t "My Photo Gallery" --theme custom_theme.css
+```
+
+To exclude specific folders and specify file extensions:
+
+```sh
+./generate_html.py -p /data/pictures -w https://pictures.example.com -t "My Photo Gallery" --exclude Archives --exclude Temp -e .jpg -e .jpeg -e .png
 ```
 
 ## Notes
@@ -82,7 +94,8 @@ To specify a custom CSS theme:
 - The root and webroot paths must point to the same folder, one on the filesystem and one on the webserver. Use absolute paths.
 - Ensure that ImageMagick is installed and accessible in your system for thumbnail generation.
 - The script generates the preview thumbnails in a `.thumbnails` subdirectory within the root folder.
+- The `.lock` file prevents multiple instances of the script from running simultaneously. Make sure to remove it if the script terminates unexpectedly.
 
 ## License
 
-This project is licensed under the AGPL-3.0 License. See the [LICENSE](LICENSE) file for details.
+This project is licensed under the AGPL-3.0 License. See the [LICENSE](LICENSE) file for details.
\ No newline at end of file
diff --git a/generate_html.old.py b/generate_html.old.py
old mode 100755
new mode 100644
diff --git a/generate_html.py b/generate_html.py
index 1a5c8e9..6cb66b3 100755
--- a/generate_html.py
+++ b/generate_html.py
@@ -13,15 +13,13 @@ import cclicense
 
 environment = Environment(loader=FileSystemLoader(os.path.join(os.path.abspath(os.path.dirname(__file__)), "templates/")))
 
-_ROOT = "/data/pictures/"
-_WEBROOT = "https://pictures.example.com/"
 _FOLDERICON = "https://www.svgrepo.com/show/400249/folder.svg"
-_ROOTTITLE = "Pictures"
 _STATICFILES = os.path.join(os.path.abspath(os.path.dirname(__file__)), "files")
 _FAVICON = ".static/favicon.ico"
 _STYLE = ".static/global.css"
 _THEME = os.path.join(os.path.abspath(os.path.dirname(__file__)), "themes", "default.css")
 _AUTHOR = "Author"
+VERSION = "1.3"
 # fmt: off
 rawext = [".3fr", ".ari", ".arw", ".bay", ".braw", ".crw", ".cr2", ".cr3", ".cap", ".data", ".dcs", ".dcr", ".dng", ".drf", ".eip", ".erf", ".fff", ".gpr", ".iiq", ".k25", ".kdc", ".mdc", ".mef", ".mos", ".mrw", ".nef", ".nrw", ".obm", ".orf", ".pef", ".ptx", ".pxn", ".r3d", ".raf", ".raw", ".rwl", ".rw2", ".rwz", ".sr2", ".srf", ".srw", ".tif", ".tiff", ".x3f"]
 imgext = [".jpg", ".jpeg"]
@@ -69,7 +67,7 @@ def listfolder(folder: str, title: str):
             if os.path.isdir(os.path.join(folder, item)):
                 subfolder = {"url": f"{args.webroot}{baseurl}{urllib.parse.quote(item)}", "name": item}
                 subfolders.extend([subfolder])
-                if item not in notlist:
+                if item not in args.exclude:
                     listfolder(os.path.join(folder, item), os.path.join(folder, item).removeprefix(args.root))
             else:
                 extsplit = os.path.splitext(item)
@@ -77,7 +75,7 @@ def listfolder(folder: str, title: str):
                     pbar.desc = f"Generating html files - {folder}"
                     pbar.update(0)
                 contains_files = True
-                if extsplit[1].lower() in imgext:
+                if extsplit[1].lower() in args.extensions:
                     image = {
                         "url": f"{args.webroot}{baseurl}{urllib.parse.quote(item)}",
                         "thumbnail": f"{args.webroot}.thumbnails/{baseurl}{urllib.parse.quote(extsplit[0])}.jpg",
@@ -96,7 +94,7 @@ def listfolder(folder: str, title: str):
     if not args.non_interactive:
         pbar.desc = f"Generating html files - {folder}"
         pbar.update(0)
-    if len(images) > 0 or (args.fancyfolders and not contains_files):
+    if len(images) > 0 or (args.fancyfolders and not contains_files) or (args.fancyfolders and args.ignoreotherfiles):
         imagechunks = []
         if len(images) > 0:
             for chunk in np.array_split(images, 8):
@@ -159,7 +157,7 @@ def gettotal(folder):
                 total += 1
                 if not args.non_interactive:
                     pbar.update(1)
-                if item not in notlist:
+                if item not in args.exclude:
                     gettotal(os.path.join(folder, item))
 
 
@@ -174,19 +172,27 @@ def main():
     # fmt: off
     # Parse command-line arguments
     parser = argparse.ArgumentParser(description="Generate html files for static image host.")
-    parser.add_argument("-p", "--root", help="Root folder", default=_ROOT, required=False, type=str, dest="root")
-    parser.add_argument("-w", "--webroot", help="Webroot url", default=_WEBROOT, required=False, type=str, dest="webroot")
+    parser.add_argument("-p", "--root", help="Root folder", required=True, type=str, dest="root")
+    parser.add_argument("-w", "--webroot", help="Webroot url", required=True, type=str, dest="webroot")
+    parser.add_argument("-t", "--title", help="Title", required=True, type=str, dest="title")
     parser.add_argument("-i", "--foldericon", help="Foldericon url", default=_FOLDERICON, required=False, type=str, dest="foldericon", metavar="ICON")
     parser.add_argument("-r", "--regenerate", help="Regenerate thumbnails", action="store_true", default=False, required=False, dest="regenerate")
     parser.add_argument("-n", "--non-interactive", help="Disable interactive mode", action="store_true", default=False, required=False, dest="non_interactive")
     parser.add_argument("-l", "--license", help="License", default=None, required=False, choices=["cc-zero", "cc-by", "cc-by-sa", "cc-by-nd", "cc-by-nc", "cc-by-nc-sa", "cc-by-nc-nd"], dest="license")
     parser.add_argument("-a", "--author", help="Author", default=_AUTHOR, required=False, type=str, dest="author")
-    parser.add_argument("-t", "--title", help="Title", default=_ROOTTITLE, required=False, type=str, dest="title")
+    parser.add_argument("-e", "--extension", help="Extensions to include (multiple --extension are allowed)", required=False, action="append", dest="extensions")
     parser.add_argument("--theme", help="Path to CSS theme file", default=_THEME, required=False, type=str, dest="theme")
     parser.add_argument("--fancyfolders", help="Use fancy folders instead of default apache ones", action="store_true", default=False, required=False, dest="fancyfolders")
+    parser.add_argument("--ignore-other-files", help="Ignore other files than the ones specified with the specified extensions -e", action="store_true", default=False, required=False, dest="ignoreotherfiles")
+    parser.add_argument("--exclude", help="Exclude folders, only provide the basename of the folders you want to exclude (multiple --exclude are allowed)", required=False, action="append", dest="exclude")
+    parser.add_argument('--version', action='version', version=f'%(prog)s {VERSION}')
     args = parser.parse_args()
     # fmt: on
 
+    if args.extensions == []:
+        args.extensions = imgext
+    if args.exclude == []:
+        args.exclude = notlist
     if not args.root.endswith("/"):
         args.root += "/"
     if not args.webroot.endswith("/"):