Stuck Pixel Fixer

Photosensitivity warning: this tool flashes rapidly changing colours. If you have photosensitive epilepsy or are sensitive to flashing light, do not use it. Others may prefer the small box over whole-screen mode and can look away while it runs.

Press start, then drag the flashing box so it covers the stuck pixel. Leave it running for at least 10 minutes — stubborn pixels can take 30 minutes to an hour, or several tries. Use Pause, the size and speed controls, or Whole screen mode; press Esc to exit.

Flashes rapidly · runs until you exit · nothing is uploaded.

Try to bring a stuck pixel back to life. This tool flashes rapid colour noise over a box you drag onto the stuck pixel, cycling its red, green and blue sub-pixels fast enough to jolt a frozen one loose. Works on any monitor, laptop, phone or TV, right in your browser.

How to Fix a Stuck Pixel

A stuck pixel has power but its sub-pixels are frozen on one colour. Flashing colours over it very fast can shake them loose — here's the routine.

1

Find and clean the spot

Run the dead pixel test first to locate the pixel and confirm it's stuck (shows a colour) rather than dead (stays black on white). Wipe the area gently in case it's just dust, and check the same spot on the black screen to see whether it glows.

2

Drag the flasher over it

Start the fixer and drag the flashing box until it sits directly on top of the stuck pixel. Use a smaller box for pinpoint accuracy, or Whole screen if you can't tell exactly where it is.

3

Let it run, then re-check

Leave it flashing for 10 minutes or more. Exit and re-run the dead pixel test to see if it recovered. Repeat over a day or two for stubborn pixels — many free eventually, though a truly dead one usually won't. Once it's clear, the monitor test checks the rest of the panel.

Frequently Asked Questions

How does a stuck pixel fixer work?
The stuck pixel fixer rapidly flashes random colours over the stuck pixel, forcing its red, green and blue sub-pixels to switch on and off very fast. That rapid cycling can jolt a sub-pixel that is stuck on or off back into normal operation. Place the flashing box over the pixel and let it run — ten minutes at minimum, longer for stubborn pixels. Drag the box by its grip so it sits exactly over the fault.
Can a stuck pixel really be fixed in software?
Often, yes — a stuck pixel has power but its sub-pixels are frozen, and rapid colour cycling frees many of them. A dead pixel gets no power and stays black on every colour, including the white screen test, so that kind almost never responds to software and usually needs panel repair or replacement. Run the dead pixel test first so you know which of the two you are dealing with.
How long should I run the stuck pixel fixer?
Run the stuck pixel fixer for at least 10 minutes with the box centred on the pixel. If the pixel hasn't changed, try again for 30 minutes to an hour. Some pixels free after several separate sessions, so it's worth repeating over a day or two before giving up. If nothing has changed after a few long sessions, the pixel is probably dead rather than stuck.
Is the flashing safe for my screen and for me?
The flashing is safe for the display, because it only shows ordinary colours quickly. But the rapid flashing can be uncomfortable, and may trigger symptoms in people with photosensitive epilepsy. If that applies to you, don't use it, or look away and use the small box rather than whole-screen mode. The box stays where you drag it, so you can cover a single pixel and leave the rest of the screen dark.

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