Skip to content
EN

Upscale an image with AI

Upscale a photo 2x or 4x with an AI that restores sharpness and reduces noise. Free, no sign-up, the image is processed in your browser.

  • Free
  • No sign-up
  • No file uploaded
  • Windows, Mac, Android, iPhone

Your files stay on your device: nothing is uploaded.

Loading the tool…

Share this tool

About this tool

A small image enlarged the usual way turns blurry. Here, an AI model (Real-ESRGAN) rebuilds edges and textures while multiplying the size by 2 or 4, and reduces noise and JPEG artifacts. Everything runs in your browser: your photo is never uploaded.

When to use it

Photo too small

Enlarge a small image to print it or display it large.

Old scanned photo

Bring sharpness back to a low-resolution scan.

Web visuals

Get an image big enough for a banner or a wallpaper.

How to use

  1. Choose 2x or 4x and the file format.
  2. Drop your image: upscaling starts.
  3. Compare before and after with the slider.
  4. Download the upscaled image.

How it works

The Real-ESRGAN “general x4v3” model (BSD-3 license, about 5 MB) is downloaded from our site on first use, then kept by the browser. It processes the image in overlapping 128-pixel tiles so no seams show.

All computing happens on your device: the time depends on its power and the image size (from a few seconds to a few minutes). At 2x, the model's 4x result is scaled back down, which makes it even sharper.

Tips for best results

  • Start from the largest, least compressed image you have.
  • For a photo that's already large, 2x is often enough and faster.
  • Choose JPEG for a photo and PNG for a logo or an image with transparency.
  • The AI invents plausible details, not the real ones: check faces and text.

Common problems and fixes

Processing takes a long time

Use 2x, close other tabs or use a computer: the work runs on your device.

The image was reduced before upscaling

The output is capped at 16 megapixels (a mobile browser limit): pick 2x to keep more original detail.

The result looks painted or smoothed

That's the denoising on a badly damaged image: start from a less compressed version if you have one.

Frequently asked questions

Is my image uploaded to a server?

No, it's processed in your browser; only the AI model is downloaded from our site.

How big is the model?

About 5 MB, downloaded once and then kept by the browser.

What's the maximum size?

16 megapixels of output: up to 4 megapixels of original at 2x, and 1 megapixel at 4x.

Is it free?

Yes, with no sign-up and no watermark.

Does the AI recover the real details?

No, it creates plausible details; unreadable text doesn't become readable.

Related searches

Still stuck?

Ask on the forum: the category, the tool, your device sheet and the test result will be filled in for you.