Automatically mark videos on Youtube that you have already watched.

Watchmarker for Youtube - Track Your Viewing History
"Watchmarker for Youtube" is a Firefox add-on that enhances your YouTube experience by automatically marking all videos you have watched, not just the recent ones. It keeps a comprehensive record of your watch history and includes a backup feature to ensure your data is safe. Users can manually sync their history to ensure completeness and can report issues on GitHub for timely support. Enjoy a seamless way to manage your YouTube watch history!
Add-on stats
Manifest V2
By: sniklaus
Rating: 4.65
(134)
Weekly download count: 68
Firefox on Android: No
Permissions:
- alarms
- downloads
- history
- tabs
- cookies
- webRequest
- webRequestBlocking
- https://www.youtube.com/*
- https://m.youtube.com/*
Size: 431.95K
Full description: See detailed description
Ranking
# 1,721
Other platforms
Not available on Android
Not available on Edge
User reviews
Pros
- Clearly labels watched videos
- Easy to import and export watched videos
- Works well with other extensions like YouTube Redux
- Fulfills a real need for users
- Highly rated for functionality and ease of use
Cons
- Occasional issues with videos not marked as watched
- Watch history resets unexpectedly
- Too many false positives for watched videos
- Performance lag during video playback
- Limited functionality with YouTube's mobile interface
Most mentioned
- Functionality to mark videos as unwatched
- Desire for consistency in marking watched status
- Request for a threshold for marking videos as watched
User reviews
by Keraunos, 2025-02-25
by 天灭中共退党团队保平安, 2025-02-15
Exactly what I needed. Really clearly labels watched vids. Import from ff history and youtube then good to go. So good, i'm going to see if I can throw a donation at the author
by Firefox user 17657751, 2025-02-05
Add-on safety
Risk impact
Watchmarker for Youtube requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Watchmarker for Youtube. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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