SeenIt is a free Chrome add-on developed by Imran Thobani that helps users keep track of the YouTube videos they have already watched. With SeenIt, users can easily discover new content without wasting time on videos they have already seen.

One of the main features of SeenIt is its ability to label or hide the thumbnails of videos that users have watched. This feature works for search results, recommendations, and the sidebar with similar videos to the one currently being watched. By labeling or hiding these thumbnails, SeenIt helps users avoid clicking on videos they have already viewed, saving them time and allowing them to explore new content more efficiently.

SeenIt is a useful tool for avid YouTube users who want to easily keep track of the videos they have watched. It enhances the browsing experience by reducing repetitive content and offering a streamlined way to discover new videos. If you find this extension helpful, please consider rating and leaving a review to provide valuable feedback to the developer.