ToolsBench

Upscale Image with AI

Enlarge a photo 2× or 4× and keep it sharp — right in your browser.

Processed on your device
The upscaling runs in your browser — your image is never uploaded.

Can I upscale an image with AI without uploading it anywhere?

Yes. Upscale Image on Tools-Bench runs Real-ESRGAN inside your browser: add a photo, pick 2× or 4×, and download the enlarged version. The model downloads once and is cached; your image itself is never uploaded. It's free, needs no account, and reconstructs detail a plain resize only blurs.

About Upscale Image

Enlarges an image 2× or 4× with Real-ESRGAN, an AI super-resolution model that runs entirely in your browser — no upload, no account, no per-image fees. Unlike a plain resize, which only stretches the pixels it already has, the model reconstructs edges and texture, so the bigger version stays sharp instead of going soft.

How to use Upscale Image

1
Add an image
Photos, artwork and screenshots all work. Small, slightly soft images gain the most.
2
Pick 2× or 4×
The model loads once (a few seconds on first use) and then works through your image on your device.
3
Download the result
You get the enlarged image in the same format you started with — JPG stays JPG, everything else becomes PNG.

Frequently asked questions

Does the AI send my image anywhere?
No. Your browser downloads the model file, the upscaling is computed on your device, and the image itself is never transmitted. After the first run the model loads from your browser's cache.
How is this different from just resizing?
A resize interpolates between the pixels you already have, so the result is bigger but softer. Real-ESRGAN was trained on millions of image pairs and predicts the detail that a sharper version would have had — edges stay crisp and texture comes back.
Why is there a size limit?
The result has to fit in a browser canvas, and every browser caps how big one can be. 4× multiplies the pixel count by sixteen, so the limit bites sooner there; 2× accepts four times as large an image.
What images work best?
Photos and artwork that are simply small or a little soft. The model cannot recover detail that was never captured, so a heavily blurred, very noisy or hard-compressed image comes back bigger but not truly sharper.