Free tool · AI upscaler
Blurry frame? Make it sharp.
Upscale a screenshot from your video or an old thumbnail with AI, then download it at YouTube's 1280×720. Free, and it runs in your browser.
- Free
- No sign-up
- Runs in your browser
How it works
Three steps, under a minute.
- 1
Drop your image
A screenshot from your video, an old thumbnail or a small photo.
- 2
Upscale with AI
We pick 2× or 4× to reach thumbnail size. The AI rebuilds detail instead of just stretching pixels.
- 3
Download at YouTube size
Get it at exactly 1280×720, or the full upscaled PNG.
Now make the thumbnail, in a minute.
Describe your video or copy a format that's already working. Put your face in, score it, fix it.
FAQ
Questions
Is it free?
Yes. No sign-up and no watermark.
Is my image uploaded?
No. The AI runs in your browser, so your image stays on your device. The first run downloads a small model.
What size should a YouTube thumbnail be?
1280×720 pixels (16:9), under 2MB. 'Download 1280×720' crops to 16:9 and saves a JPEG at exactly that size.
2× or 4×?
Use whichever gets your image to at least 1280 pixels wide. A 640×360 frame needs 2×; anything smaller needs 4×. We pick it for you.
Why is it slow on my phone?
Upscaling is heavy work done on your device. Big images take longer, so on a phone start with smaller ones, or use a laptop.