For a similar reason I've been using <a href="https://pockettube.io/" rel="nofollow">https://pockettube.io/</a> for the past year, to manage my YT subscriptions, and it is one of the most impactful extensions I've installed.<p>Features I really like:<p><pre><code> + Subscription groups: When subscribing to channels you choose in what subscription group to put them. In your left sidebar you can see all your subscription groups and total the number of new videos they published.
- When you click on a subscription group from your left sidebar, it doesn't take you away from the current YT URL you're on. It just opens a well-integrated modal window from which you can see what's new. There you can also filter whether the videos watched/unwatched/shorts/uploads/live/.
+ Notifications when a new video video is published in a certain subscription group. For example last year I wanted to keep up with the latest Stable Diffusion developments, so I had a group for this, with high quality channels only, and wanted to be notified when a new video is published.
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It feels like more people should know about this extension. Somehow I feel I've found it pretty late in the game, when I realized YT's default subscription management was very painful to me.