YouTube Watched Videos Hider is a Firefox add-on designed to enhance your YouTube browsing experience by hiding watched videos. This subscription-based tool allows users to maintain a clean video list, making it easier to discover new content. With its ability to remove watched videos on the fly, it eliminates the need for manual intervention, ensuring that your YouTube feed remains fresh and relevant. The add-on also offers customizable settings, including the option to hide videos based on a configurable percentage watched, and the ability to toggle hidden videos back on with a simple click.

In addition to its main features, YouTube Watched Videos Hider supports various YouTube pages, enhancing functionality across the platform. Users can set specific channel IDs to avoid hiding preferred content, although this feature may not always work due to YouTube’s channel ID variations. The add-on is also available as a user script for Chrome and other browsers, though it may not include all features. Overall, this tool is an effective solution for those looking to optimize their YouTube viewing experience.