YT Thumbnail Downloader is a simple tool developed by Y2Saver that allows users to download thumbnail images of any YouTube video. This free Chrome add-on is a handy solution for those who need to save YT video thumbnails in various qualities.

With YT Thumbnail Downloader, you can easily download video-thumbnails in Full HD (1080), HD (720), SD, and even small sizes. The add-on supports multiple formats, including YouTube (HD, HQ, 1080p, 4K), ensuring that you can obtain the thumbnail image you desire.

Using this add-on is straightforward. Simply open any YouTube video, click on the "Download Thumbnail" button from the extension, and you're done! Your thumbnails will be ready for saving.