AI image upscaler

The opposite of compression: make a small or over-compressed picture bigger and clearer. The AI rebuilds detail instead of just stretching pixels.

Free · No sign-up · Your files are processed on your device and never uploaded

How to use Image upscaler

  1. 1

    Choose your file

    Drop it on the page or pick it from your phone or computer.

  2. Upscale picture
    2

    Press "Upscale picture"

    Pick the options you want - the defaults suit most files.

  3. 3

    Download the result

    Ready in seconds. Your file never left your device.

2× or 4×

Pictures are processed in tiles so even phones can handle them. Swin2SR, an open-source super-resolution model, does the work on your device.

  • 2× - quick, for sharper photos and screenshots.
  • 4× - a model trained to repair compressed JPG photos (blocky, smeared WhatsApp-style images).

What to expect

Upscaling adds realistic detail, but it cannot invent information that was never there - a face that is a few pixels wide will not become a portrait. It shines on photos that are a bit small, soft or blocky.

Questions

What is the largest picture I can upscale?

Up to 1024 px (2×) or 512 px (4×) on the longest side per run; bigger pictures are reduced first. That gives results up to 2048 px.

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