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Automatically mark YouTube videos you've already watched - now with Manifest V3 support. Starting a video only to realize you’ve already seen it is annoying. YouTube Watchmarker runs in the background to prevent this by tracking what you've seen and visibly marking those videos on the site. 🎯 Tracking • Track browser navigation in real-time • Sync your browser history • Sync your YouTube watch history ⚙️ Configurable Visual Settings • Fade out thumbnails for videos you have already watched • Convert watched thumbnails to grayscale • Add a badge to the thumbnail showing the exact date you viewed it • Hide the built-in red progress bar on videos you have completed • Display full progress bars on videos you have completed 💾 Data & Privacy: • All data is stored locally on the device so your history remains private • Synchronize your history automatically every hour • Support for exporting/importing your watched videos database • Includes a built-in search tool to quickly find previously watched videos • Manually remove specific videos from your YouTube/Browser history v1.0.7: • fixed some issues with video marks v1.0.8: • added a "Quick Sync" option that will only sync the last 1000 videos watched v1.0.9: • added support for youtube's latest update (main page and recommendations) v1.0.10: • improved support for the latest youtube layout v1.0.11: • added a popup to make it easier and faster to sync your watched history (just click the extension icon) • added a new visual option to mark watched videos (red progress bar) A refreshed version of the original Watchmarker for YouTube extension, now working with Manifest V3. Credit goes to the original author.
Watched Videos On YouTube Remover
YouTube only allows you to remove all watched videos from the Watch Later playlist, not taking progress into account. Videos that have only been partially viewed will also be deleted from the playlist. For individual playlists the function is even not available at all. ★ By means of this extension, the fully viewed videos can be deleted automatically from a playlist. ★ The partially watched videos remain in the playlist and can be watched at a later time. The extension extends the action menu by the entry "Remove completely watched videos". "A playlist on YouTube employs a lazy loading technique, meaning that it loads content as needed rather than all at once. Therefore, this extension operates based on the entries that have already been loaded. It doesn't automatically load all entries in the playlist. For the extension to consider more videos, you would need to manually scroll down through your playlist to load more entries."
Youtube Hider: hide watched videos, Shorts and low views
Hides already watched videos from YouTube, as well as low views videos and remove Shorts. YouTube Hider helps you clean up YouTube by hiding what you don't want to see. Automatically remove watched videos, filter by views or upload date, and eliminate Shorts, Mixes, Playlists and live streams: all with simple, customizable controls. ✔ Hide watched videos based on your chosen progress threshold ✔ Filter videos below your preferred view count ✔ Hide by upload date: remove videos too new, too old, or both ✔ Remove Shorts, Mixes, Playlists and live streams ✔ Choose to fully hide filtered content or dim it with an overlay showing the filter reason ✔ Easy Mode for quick toggles, Advanced Mode for per-page control ✔ Floating quick-settings button for instant access on any YouTube page Works on Home, Channel, Subscriptions, Search and related video pages. Fully open source, lightweight, and data-free.
Blur All Watched Youtube Videos
This is an extension that makes it easier to see that YouTube videos have been viewed.
YouTube Watched Marker
Easily mark the YouTube videos you watched as watched. A lightweight extension for Chrome on YouTube.com where you can hide the videos you've already watched. Its main functions are: * Hide or show videos with one click. * Hide or show shorts with one click. * Making a backup of all watched videos (can download as a .txt file). * You can adjust the opacity percentage of the videos you watch. * When your mouse is over a video, you can press the W keyboard key to mark it as watched. The watchlist is kept in the Chrome cache. Therefore, you can back up your watchlist from time to time and upload your backup in case your Chrome cache is deleted. Problems: * If your page is slowing down due to YouTube's non-refreshing redirect, manually refresh the current page from your browser for faster page loading.
