01 / Full HD
1280 x 720
The biggest size, and the one to use on a website or in an edit. Some videos, often older ones, do not have it; the page then shows the biggest one there is.
Free tool
Paste the link of a YouTube video or Short and see its thumbnail in every size YouTube keeps, from the full HD 1280 x 720 picture down to the small one. Save any of them as JPG, PNG or WebP. Handy for getting back the thumbnail of your own video, planning a redesign, or a playlist page.
Thumbnails belong to the person who made the video. Download your own, or use others' only with permission or where the law allows, for example to comment on the video.
Making a new one? Try the YouTube thumbnail maker.
The thumbnails come straight from YouTube to your browser. Nothing goes through our servers.
The sizes
01 / Full HD
The biggest size, and the one to use on a website or in an edit. Some videos, often older ones, do not have it; the page then shows the biggest one there is.
02 / Standard and high
Older 4:3 sizes, with black bars above and below a widescreen picture.
03 / Medium and small
The small pictures YouTube uses in lists and on slow connections.
Questions
A thumbnail is the creator's work, so it is theirs to use. Download your own freely. For someone else's, ask first, or keep to uses the law allows where you live, such as quoting it in a review. Never pass it off as your own video.
YouTube does not keep a 1280 x 720 picture for every video, often not for older ones. When it is missing, the biggest size YouTube has is shown first.
Yes. Paste the Shorts link. The thumbnail is still a landscape picture, the way YouTube stores it.
No. Only public and unlisted videos have thumbnails anyone can open.
Yes, as YouTube keeps it: paste your video's link and save the biggest size. It is a compressed copy, so keep your design file for future edits.
No. Your browser asks YouTube for the pictures directly; this site does not see or keep the link.