YouTube WATCHED. Classic View
Fun
This extension adds a WATCHED mark to the preview of the wholly or partly viewed video, and makes it dimmer. Like in good old days.
Users
8K
Rating
3.7
Reviews
148
7D Growth
0|0%
Stable signalUnknownHigh-risk permissions
Watchmarker for Youtube
Automatically mark videos on Youtube that you have already watched.
Users10KCurrent public install base
Rating4.5Store average score
Reviews154Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
1 assetsWatchmarker for Youtube Media preview
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Start
4.44
Latest
4.45
7-day rating change
+0.01
2026年7月15日2026年7月21日
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+1K+11.1%Technical snapshot
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Version5.0.4
ManifestV3
Size419KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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Youtube keeps track of your watch history and automatically marks videos that you have already watched. They however only mark recently seen videos, which is kind of disappointing. This addon fixes this issue and keeps track of your entire watch history, such that not only the recently seen videos are being marked.
***How can the persistence of the database be ensured?*** There is an export and import feature, which makes it easy to create a backup of the history. This backup can easily be archived such that you can ensure that you never lose your history.
***How can I make sure that the database is complete?*** The automatic synchronization only considers the recent activity. You are thus encouraged to manually initiate a complete synchronization in the settings, which incorporates as much of your history as possible.
***Something is broken, I demand a fix!*** Please be considerate when leaving a review, this is a free extension that I invest my spare time in. If there is something that does not work then please file an issue on Github where it is easier for me to track.
Reviews
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Store average score4.5Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.3Average computed only from synced review bodies below
Reviews with text126Synced review bodies
Total ratings / reviews154Chrome Web Store public rating/review count
Store average score: 4.5. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Rating
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I love that the watch-date can be appended on the thumbnail text now. As long as this remains good enough to track 99% of watches across different history sources, I very much appreciate this feature update. One nice to have would probably be able to sort the list column-wise in the extension details, and perhaps filter by month/year etc.
you are the best developer thank you
Easily one of my FAVORITE addons, but you totally screwd it with today´s update. As such, my latest database entry says July 2023, even though I´ve watched HUNDREDS of videos ever since, all of them GONE, including the ones I watched yesterday. Please let me know if there´s any way for you to fix this, or I should try to revert to the latest version, because it´s truly a catastrophe, for me. I´ll update the rating as soon as you let us know. Thanks.
I really like this extension, and think everyone should download it. The only problem I've noticed is that sometimes the synchronization doesn't get the watch order correct. For example, one Let's Play that I have is shown as having been watched in the order of episode 60, followed by episodes 59, 63, 62, 61. It's not a big issue, especially considering it's listed correctly on the YouTube history page, but it does make me a little annoyed when stuff is out of order like that. And there is no way to delete multiple entries at once, only individually. Also, there is no sync function if you watch YouTube across multiple computers, work and home for example, so you would need to manually export and import each time. This is not feasible as someone that moves between multiple profiles on one device, as I would be exporting and importing an absurd amount. Maybe adding the ability to manually move the videos around after they've been logged to fix this. I pay $30 a year for PocketTube's premium features, which includes a cloud backup and sync function. I'd be willing to throw a few dollars each year for the same functionality for Watchmarker. Still download it, and you won't regret it. Edit: 12/28/2025 update, the extension does not properly label the date for watched videos. I have videos watched on 12/27/2025 showing as having been watched today, 12/28/2025.
I don't know how I would ever use YouTube without this extension. The simplicity of the way it works is what makes it so great. No matter what device I watch a video on, when I return to a PC with this extension, it just effortlessly pulls my watched history from YouTube and greys those videos out. A cloud option for the backup file would be nice.
Love it! A Must!
Very good extension, but uses very much of my memory! per "Chrome Task Manager" it uses 1,400,000 - so 1.4 GB ? What the heck ?
My favorite extension, haven't re-watched a video since.
I just moved the watched videos database from Firefox to Chrome like a breeze ! Thanks the extension is really helpful
Thank you so much for adding back one of the many things Google keeps taking away from us. If possible it would be AWESOME if on the thumbnail of watched videos it said what percentage of the video has been watched - There are tonnes of podcasts I have partially listened to and would like to know which ones, then if I haven't clicked dislike I'll know if I want to finish watching it. Hopefully it is possible