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Image Noise Reduction

Clean up grainy low-light photos and speckled scans.

  • Free
  • No sign-up
  • Files stay on your device

or drag and drop it here

Filter size
80%
50%

A median filter removes speckles and grain while keeping edges sharper than a blur. Large photos are processed up to 4,000 px.

Choose a photo to reduce noise. Left side = original, right side = cleaned.

Your files are processed entirely in your browser using built-in web technologies. They are not uploaded to our servers, and closing the page clears them from memory.

How to use the Image Noise Reduction

  1. Choose a noisy photo.
  2. Pick light or strong filtering and set the strength.
  3. Drag the split slider to compare, then download.

What does this tool do?

Digital noise appears when a camera boosts a weak signal — night shots, indoor photos and old scans. A median filter replaces each pixel with the middle value of its neighbours, which removes isolated specks while keeping edges much crisper than a blur does.

Use the strength slider to blend the result with the original: lower values keep texture, higher values give a smoother image. Your images are processed on your own device and never uploaded.

Why use it?

  • Edge-preserving filter.
  • Split before/after view.
  • Adjustable strength.

Accuracy and limits

  • Heavy filtering softens fine detail such as hair and fabric. Strong AI denoisers can do better on very noisy images.

Privacy

Your files are processed entirely in your browser using built-in web technologies. They are not uploaded to our servers, and closing the page clears them from memory. There's no account to create and nothing to install.

Last reviewed by the M2Toolkit team.

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