YouTube Thumbnail Downloader
Now you will see different qualities of the thumbnail.
Download YouTube HD(1280x720), SD(640x480), High(480x360), Medium(320x180) or Default(120x90) Thumbnail images for free. This application let you download thumbnails of all quality.
Just paste the URL of the thumbnail video in the below input and click Start.
Simply copy video link and paste it in textbox showing above and click Start. Now you will see different qualities of the thumbnail. Just click on the Download Image button to save it to your storage device.