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What is a YouTube video ID and how do you find it?

Updated October 2026

A YouTube video ID is the 11-character code that identifies a single video. It is the part of a link that tells YouTube exactly which video to open, and it is also what you need to find a video’s thumbnail.

What an ID looks like

An ID is always 11 characters long and can contain uppercase and lowercase letters, numbers, hyphens and underscores. An example is dQw4w9WgXcQ. IDs are case-sensitive, so changing a capital letter to a small one gives you a different (or invalid) address.

Where to find it in different links

The mobile site, m.youtube.com, uses the same formats.

Finding it in the YouTube app

The app doesn’t show the ID on screen. Tap Share, then Copy link, and paste the link somewhere you can read it, such as a notes app. The ID is the 11 characters described above.

What people use video IDs for

Common mistakes

Skip the manual work

You don’t need to extract the ID yourself. ThumbGrab reads it from any of the formats above, ignores timestamps and playlist parts, and also accepts a bare ID. Paste your link and the thumbnails appear. To learn what each file is, read our guide to thumbnail sizes.

Download a thumbnail

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