Youtube Thumbnail Filter is a Chrome extension developed by ygongdev. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This extension provides users with the ability to filter youtube video thumbnails based on user-defined criteria.

With Youtube Thumbnail Filter, users can easily navigate through youtube thumbnails by utilizing a visual overlay feature. This means that each thumbnail will have an overlay that indicates its suitability based on the user's preferences.

One of the key features of this extension is the support for like ratio filtering. Users can set a threshold between 1% and 100%. If a video's like ratio exceeds the threshold, the thumbnail will be displayed with a green overlay. On the other hand, if the like ratio falls below the threshold, the thumbnail will have a red overlay. This allows users to quickly identify videos that are highly liked or disliked by the community.