YouTube Thumbnail Resizer: Make a Perfect 1280×720 Thumbnail
YouTube wants thumbnails at 1280 by 720 pixels, a 16:9 shape, under 2 MB. Upload something the wrong size and it gets squished or cropped badly. The YouTube thumbnail resizer below takes any image and crops it cleanly to the right size, ready to upload. It all happens in your browser.
YouTube thumbnail resizer: get the exact size
Drop in any image and the YouTube thumbnail resizer center-crops it to 1280 by 720, shows a preview, and gives you a download.
YouTube thumbnail size and rules
Here are YouTube’s thumbnail specs, which the YouTube thumbnail resizer matches:
- Resolution: 1280 by 720 pixels, the recommended size
- Aspect ratio: 16:9, the shape YouTube uses everywhere
- Minimum width: 640 pixels
- File size: under 2 MB
- Format: JPG, PNG, or WebP
The resizer defaults to 1280 by 720 and exports a JPG under the 2 MB limit. If your source image isn’t already 16:9, it center-crops to fit, so keep your main subject near the middle of the frame.
Tips for a thumbnail that gets clicks
Size is just the start. A thumbnail that earns clicks also reads well at small sizes, since most people see it tiny on a phone. Use a clear focal point, large readable text if any, and strong contrast. Check how it looks shrunk down before you commit. The YouTube thumbnail resizer gets the dimensions right, but the design choice is yours, so test the small preview the tool shows against a busy feed in your head.
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Frequently asked questions
What size should a YouTube thumbnail be?
A YouTube thumbnail should be 1280 by 720 pixels, with a 16:9 aspect ratio and a file under 2 MB. The minimum width is 640 pixels. The resizer outputs exactly this, so your upload fits without squishing or awkward cropping.
Why is my thumbnail getting cropped on YouTube?
Because your image isn’t 16:9. YouTube forces thumbnails into that shape, so a square or tall image gets cropped. The YouTube thumbnail resizer center-crops to 16:9 first, so you control the crop instead of YouTube doing it badly.
Does the resizer upload my image?
No. It runs in your browser, so your image stays on your device and is never sent to a server. You can resize private or unpublished thumbnails safely.
What file format is best for a thumbnail?
JPG is the usual choice because it keeps the file small, and the resizer exports JPG. PNG also works and keeps text sharper, but the file is larger. Either is fine as long as it stays under 2 MB.
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