image-upscaling.net

Small, soft or blurry images are hard to reuse, and image-upscaling.net is a free AI image upscaler that fixes that in the browser.

You upload a picture and the site enlarges it by 400%, with output reaching 20k resolution.

Inputs up to 5000x5000px are supported for that top-end scaling.

The service is free and needs no subscription or sign-up, which keeps it quick to try on a single photo.

It also offers face restoration, so portraits and old family pictures can come out cleaner than a plain enlargement would manage.

That makes image-upscaling.net useful as an AI photo enhancer and unblur tool as well as a simple resizer.

Pricing is the main draw.

You do not pay anything to run an image through it.

The limits are worth knowing before you start.

Very large source files may be capped, and the 4x scale is fixed, so you cannot pick a smaller step.

For occasional restoration or enlargement jobs, it is a low-effort option.