Image sharpen

Sharpen a soft image with unsharp masking — strength and radius controls, live preview.

The image stays in this browser. Nothing is uploaded or stored.

PNG, JPG, or WebP up to 25 MiB. Unsharp masking: blurred version subtracted from the original at the given strength. Output keeps the input format — use PNG to avoid JPEG ringing on hard edges.

How to use

  1. Drop an image.
  2. Set strength and radius.
  3. Download the sharpened image.

What it supports

PNG, JPG, or WebP up to 25 MiB. Unsharp masking subtracts a blurred version at the given strength — halos appear past moderate values. Output keeps the input format; use PNG to avoid JPEG ringing on hard edges.

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