A fully open-source, privacy-focused, and free Firefox-based extension for downloading images and videos from web pages, including segmented videos.

No ads, no trackers, no payments, no subscriptions, no "companion" apps, no data leaves the extension.

Addon: https://addons.mozilla.org/en-US/firefox/addon/subedown/

Github: https://github.com/machinellama/SubeDown

WARNING: While this extension was made with privacy in mind, we do not recommend using this with Firefox, since Mozilla is no longer privacy focused. Mozilla will track and sell any data you enter while using the Firefox browser. We recommend using this extension with alternate browsers, like LibreWolf.

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• Image Downloader: Download all images on a web page with one click, with some advanced options:
  • Download Settings:
    • Override the file name or folder name for downloads
    • Replace text in a url when downloading (multiple replaces allowed)
      • supports using * to replace everything after; example: replace test=*withtest=123&other=456-> will replaceexample.com?test=abcwithexample.com?test=123&other=456
  • Refresh Settings:
    • Filter by image types
    • Filter by image size (min and max)
    • Filter urls that include a specific substring
  • Download from multiple pages, by using a {{number}} placeholder in the url
    • Will apply refresh and download settings to each page
• Video Downloader: Download videos on a web page
  • Override the file name or folder name for downloads
  • Supports segmented videos (including .ts, .m4s, and .m3u8 videos)
    • URL template for segmented files; e.g. https://example.com/video/seg-a3b3{{number}}.ts; The number usually starts at 0 or 1 and increments by 1; will keep downloading segments until one fails, then all segments will be combined into a single mp4 video

• Videos are still a work in progress, but it works for many cases
• If a video doesn't appear in the list:
  • Try clicking "clear" and refresh the page, then start playing the video to ensure it's detected
  • Also try closing and reopening the extension sidebar, then refreshing
• If a video download doesn't start:
  • Check if you can play the video on the webpage
  • If you're using a VPN, try changing to a different VPN server since some video providers block certain servers
  • Check if the website has bot protection, like cloudflare; if so, you may need to manually bypass protections before starting the download
  • Try copying the video URL with the "Copy URL" button, paste it into a new tab, and see if the video plays or is blocked
• If video progress disappears:
  • Don't worry! Progress may disappear if you change tabs or close the sidebar, but the download is still happening in the background
  • As long as you don't close your browser window, the download should appear in your download folder after a few minutes
• .ts file only downloads 10 or so segments:
  • Typically the format for will something like /ep.1.123.10801.ts, where the 1080 represents the quality (could be 480, 720, etc.) and the number right after it (the 01 in this case) is the segment number.
  • If you start the download when the number if above 10, it may cause an issue
  • Try clicking the "advanced" button for that video item, copy the url, replace the last number after the quality with {{number}}, start at 1, leave the end empty, and start the download again
  • Also try clearing the list, closing and reopening the sidebar, refreshing the page, and manually starting the video to make sure it starts
• Download still not working? Create an Issue here on Github with details (or take a look at the code and create a PR)

MIT License: free to use for personal and commercial use

1. Clone the repository

2. Open any Firefox-based browser and enter about:debugging#/runtime/this-firefox in the address bar

3. Click on "This Firefox" in the sidebar

4. Click "Load Temporary Add-on..." and select the manifest.json file in the cloned repository

5. Best experience if used in the sidebar

6. Build new artifact with: web-ext build --artifacts-dir=web-ext-artifacts

Anyone is welcome to contribute code or create issues.