Resize
Resize image to YouTube thumbnail size
Get a 1280×720 (16:9) thumbnail under YouTube's 2 MB limit in one step.
Private: processed on your device, never uploaded
Size (pixels)
Leave width or height empty to keep the aspect ratio.
Output format
More options
Compression
How it works
- 1
Choose images, drop them onto the box, or paste one with Ctrl/⌘+V.
- 2
Pick a preset or type the width and height, then choose fit or crop.
- 3
Download the resized files individually or as a ZIP.
About this tool
YouTube recommends custom thumbnails of 1280×720 pixels — a 16:9 ratio — with a minimum width of 640 pixels, and the file must be under 2 MB.
This tool crops your image to 16:9 from the centre, resizes it to 1280×720 and makes sure the file stays under the size limit, adjusting the JPG quality only if it needs to.
Frequently asked questions
What is the YouTube thumbnail size?
1280×720 pixels (16:9), at least 640 pixels wide, as a JPG, PNG or GIF under 2 MB.
My thumbnail looks blurry after upload — why?
Usually because the source image was smaller than 1280×720 and got stretched. Start from an image at least that large.
Are my images uploaded to a server?
No. The image is decoded, processed and re-encoded entirely inside your browser using WebAssembly. Nothing is sent to us or anyone else, which also makes it fast — there is no upload or download wait.
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