YouTube Thumbnail Resizer
Universal format, best for photos. No transparency.
90%
Resizing runs entirely in your browser — your image never leaves your device.
YouTube Thumbnail Resizer
Universal format, best for photos. No transparency.
Resizing runs entirely in your browser — your image never leaves your device.
YouTube Thumbnail Resizer
YouTube thumbnails render at 1280×720 (16:9) and must stay under 2MB — upload anything else and the platform either crops, scales or re-compresses it for you. This resizer preloads both dimensions: drop an image, and the workspace is already seeded to 1280×720. Unlock the aspect lock if your source is a different shape, export a crisp JPG, done — all locally.
Recommended upload: 1280×720 pixels, 16:9, JPG/PNG/GIF under 2MB, minimum width 640. Starting at the full 1280×720 matters because thumbnails are displayed everywhere from 168px sidebar tiles to 55-inch TVs — YouTube downsizes gracefully but upscales badly, so never feed it something smaller than the spec.
The 2MB ceiling is generous: a 1280×720 JPG at quality 90 usually lands between 150–400KB, leaving plenty of room. Use the compressor's target-size mode if a source image refuses to fit.
Most viewers meet your thumbnail at sidebar size, where detail dies. High-contrast subjects, one clear focal element and large text (if any) survive the shrink; busy scenes and thin fonts vanish. Resize here, then zoom your browser out and squint-test the preview before uploading.
1280×720 pixels (16:9), minimum width 640, under 2MB, in JPG, PNG or GIF. The preset here seeds exactly 1280×720.
The preset seeds both dimensions, so if the aspect differs, unlock the aspect-ratio lock and adjust, or crop the source to 16:9 first. Distortion only happens if you force mismatched dimensions with the lock off.
JPG at quality ~90 for photographic thumbnails — small and clean. PNG only earns its size for text-and-flat-color designs, and both stay well under 2MB at this resolution.
Technically yes, practically no — upscaling spreads the same pixels thinner and YouTube's re-compression magnifies the softness. Start from an image at least 1280px wide.