Guide

YouTube thumbnail size: dimensions, format and safe areas

The short answer: 1280×720 pixels, 16:9, under 2 MB, as JPG, PNG or GIF. Here is everything else you need to know so your thumbnail looks sharp everywhere it appears.

Updated October 16, 2026 · 6 min read

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The official YouTube thumbnail specs

These numbers come from YouTube Help. Designing larger (for example 1920×1080) and exporting at 1280×720 keeps edges crisp.

Resolution: 1280×720 pixels (minimum width 640 pixels).
Aspect ratio: 16:9 — the same as a standard widescreen video.
File size: under 2 MB for most channels.
Formats: JPG, GIF or PNG.
Custom thumbnails require a verified YouTube account.

Why 16:9 matters

YouTube shows thumbnails in a 16:9 frame almost everywhere. A square or vertical image gets letterboxed or cropped, which makes it look smaller and less professional next to competing videos.

If your image is the wrong shape, convert it with our free thumbnail resizer — it fits or fills the 1280×720 frame in your browser.

Design for the smallest size it will be seen at

The same thumbnail appears large on a TV home screen and tiny in the suggested-videos column on mobile. Design for the small version: one subject, big shapes, two to five words of text.

Preview it in a realistic feed with the thumbnail preview tool before you publish.

Safe areas: what gets covered

The video length badge sits in the bottom-right corner.
The progress bar for partly watched videos runs along the bottom edge.
Badges like “New” or chapters can appear on some surfaces.

Tip: Keep text and faces out of the bottom-right corner and away from the very edges. See safe zone.

YouTube Shorts covers

Shorts are vertical (9:16), and their covers appear in the Shorts shelf and on your channel page. Keep the key content centred, since surfaces crop Shorts differently. Read more in YouTube Shorts thumbnails.

Frequently asked questions

What is the best size for a YouTube thumbnail?

1280×720 pixels at a 16:9 aspect ratio. It’s YouTube’s recommended size and looks sharp on every device.

Can a thumbnail be 1920×1080?

Yes — it’s the same 16:9 ratio. Just make sure the file stays under YouTube’s size limit (2 MB for most channels).

Why can’t I upload a custom thumbnail?

Custom thumbnails require a verified YouTube account. Verify your account in YouTube Studio, then try again.

What format should a thumbnail be?

JPG is the usual choice for photos. PNG works well for graphics with flat colour. Both are supported, as is GIF.

Make your next thumbnail in minutes

Tell the AI agent what your video is about — it proposes a thumbnail, you approve it, and you can tweak it by asking.

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