YouTube Thumbnail Resizer
Resize an image to YouTube thumbnail size online — fit to 1280×720 without cropping. Free, no upload, runs in your browser.
Drop images here, or
PNG · JPG · WebP · GIF · BMP · HEIC · TIFF
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About YouTube Thumbnail Resizer
YouTube recommends 1280×720 pixel thumbnails (16:9). Drop any image and this tool scales it to fit that box without cropping or distortion — ready to upload as your video thumbnail.
Everything runs in your browser — your images are never uploaded to a server.