Download Thumbnail Help
Thumbnail.live has a YouTube thumbnail downloader that you can use to download any YouTube video's thumbnail.
Get a YouTube video's thumbnail
Simply copy and paste a YouTube video's URL into the field labelled "Video URL" and three versions, HD, Medium, and Small will display.
Download a YouTube video's thumbnail
Press the download button for the thumbnail you want to download and you will be taken to a page where you can download it.