YouTube Thumbnail Resizer — 1280x720 Free
Resize any photo to 1280x720, the recommended YouTube thumbnail size. Drop the file, type 1280 wide and 720 tall, hit resize.
YouTube thumbnail rules
Minimum 640 pixels wide. Recommended 1280x720 (16:9). Maximum file size 2 MB. Supported formats JPG, PNG, GIF. Our resizer outputs the correct dimensions; pair with the compressor to stay under 2 MB.
Why 16:9 matters
YouTube crops anything outside 16:9 in the suggested-video panel. Keeping your composition inside 16:9 means thumbnails display correctly everywhere from desktop to mobile.
Frequently asked questions
What size for YouTube Shorts thumbnail?
Shorts use 1080x1920 (9:16). Use the image resizer with those dimensions instead.
Is it actually free?
Yes. No signup, no daily cap on normal personal use, no watermark on the output. Display ads keep the site free.
Does it work on a phone?
Yes. The upload box opens the camera roll on mobile browsers directly.
What happens to my photo?
Uploads are processed to return a download link and removed automatically within an hour. We do not view, share, or sell your files.