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Stuck Pixel Fixer — Try to Revive a Stuck Pixel

Fill your screen with solid white, black, red, green, blue and gray to spot dead or stuck pixels — plus a flashing fixer that may revive stuck ones.

The whole screen fills with a solid color. Click or use the arrow keys to cycle white, black, red, green, blue and gray; press Esc to finish.

If the browser blocks fullscreen, the test fills the browser window instead.

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Result

This page opens the tool in fixer mode: press start, drag the flashing square directly over the stuck pixel, and let it run for 10–15 minutes before checking the result. The square cycles red, green, blue, white and black as fast as your display refreshes.

The idea behind it: a stuck pixel is a subpixel frozen in one state while its transistor still receives power. Forcing thousands of rapid state changes sometimes shakes it back into normal operation. Reported success rates are genuinely mixed — it costs nothing to try a few sessions, but there is no guarantee.

Two honest caveats. First, this only ever helps stuck (colored) pixels: a dead pixel that stays black on every color receives no power, and no software can revive it — check your manufacturer's pixel policy for a warranty claim instead. Second, the region flashes intensely; if you are sensitive to flashing lights, do not watch it while it runs.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Fullscreen test cycle of white, black, red, green, blue and gray — advance by click or arrow keys, exit with Esc.
  • Stuck-pixel fixer: a small draggable region flashes red, green, blue, white and black on every animation frame.
  • Works even when fullscreen is blocked: the test falls back to filling the browser viewport.

Key Benefits

✓ Runs entirely in your browser: one click takes the whole screen to a solid color — no downloads, no permissions, no watermarks.
✓ Covers both failure types: solid color panels expose dead and stuck pixels, and the flashing fixer gives stuck subpixels a real chance to recover.
✓ Honest by design: the fixer may revive stuck (colored) pixels, but no software can repair a truly dead (always black) pixel — the tool says so upfront.

Use Cases

  • • Inspect a brand-new or second-hand display before the return window closes: cycle the solid colors and look for dots that refuse to match.
  • • Tell a stuck pixel from a dead one by checking red, green and blue separately — then run the flashing fixer on stuck (colored) pixels.
  • • Use the white screen as a soft lamp for video calls, or the black screen to judge OLED true black and LCD backlight bleed in a dark room.