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Mic and webcam test

Method 3 · Mobile & display

Stuck pixel fixer

Drag the flashing window over the stuck pixel and leave it running. Rapid colour changes can wake a pixel stuck in one state.

Runs in your browser. Nothing is uploaded.

Photosensitivity warning

This tool flashes bright, rapidly changing colours. It can trigger seizures in people with photosensitive epilepsy. Do not use it if you or anyone nearby may be affected. Stop at once if you feel unwell.

Drag the flashing window over the stuck pixel. Arrow keys move it too.

How it works

How to run the stuck pixel fixer

  1. 1Read and accept the photosensitivity warning.
  2. 2Drag the flashing window so it covers the stuck pixel.
  3. 3Leave it running for 10 to 20 minutes, then check again.
  4. 4Press Stop at any time, or press Escape.

FAQ

Common questions

Will this fix a dead pixel?

No. It can only help a pixel stuck on one colour. A dead pixel has no power and cannot be repaired this way.

Is this safe for my screen?

Yes, it only displays changing colours. It will not damage a working display, but flashing is unsuitable for people with photosensitive epilepsy.

Guide

Stuck Pixel Fixer: what it checks and how to read it

How the stuck pixel fixer works

The fixer flashes saturated colour noise in a small window that you drag over the stuck pixel. Rapid changes can free a pixel locked in one state. Run it for 10 to 20 minutes, then confirm with the dead pixel test. It cannot repair a dead pixel that gets no power.

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