Smart YouTube Blocker is a free Chrome add-on developed by Smart Blocker. This beta version of the program allows users to block specific channels and keywords on YouTube, as well as limit their watch time. With a range of features, users can customize schedules for blocking channels and keywords, set limits on the number of videos they can watch from certain channels or keywords per day or week, and even password protect their settings.

One of the convenient features of Smart YouTube Blocker is the ability to block channels directly from any video by right-clicking on it. Additionally, users can easily add keywords and channels by clicking on the extension icon in the toolbar. The add-on also offers bonus features such as the option to automatically redirect the YouTube homepage to something more productive, like a playlist or search term, and the ability to remove endscreen cards and recommended videos.

Smart YouTube Blocker is currently in advanced beta and welcomes suggestions and issue reports via their support email. Please note that this extension is not affiliated with, sponsored by, or endorsed by YouTube or Alphabet Inc.