Use of this tool
Download youtube videos thumbnail in HD quality for free. You can download any YT video thumbnail online, no software need to download or install.
How to download thumbnail
To download just paste the youtube video url in the above input box and click on Submit button.
Now you can see different size of thumbnails. You can click on any thumbnail to save that thumbnail in your mobile or computer.
How to use Extension
You can drag and drop YThumb Down logo to your bookmarks bar. If your browser bookmarks bar is hidden, then press Ctrl + Shift + b on Windows or ⌘ + Option + b on Mac to show bookmarks bar or save the link as a bookmark.
Now when you are on a youtube video and want to download that video thumbnail, simply click on the bookmark.