YT Hide Seen Videos is a Chrome add-on developed by titouan.leflochriche. This free tool falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. With this extension, users can easily remove videos they have already seen from their YouTube search results, saving them from repetitive content.

The main feature of YT Hide Seen Videos is its ability to hide videos based on the video progress bar. By doing so, the extension ensures that users' data stays within their computers and is not sent to any external server. Additionally, users have the option to set a threshold for hiding videos. For example, if you don't want to see videos that you stopped watching halfway through, you can set the threshold at 50% and enjoy a clutter-free YouTube experience.

Installing the extension is simple and straightforward. After installation, users can set the desired threshold value or use the default 90% and click the "hide" button. From there, they can browse YouTube without being bothered by videos they have already seen. YT Hide Seen Videos provides a convenient solution for those tired of repetitive recommendations and search results on YouTube.