Free Stuck Pixel Fixer - Repair Stuck Pixels Online
Got a bright red, green or blue dot that won't go away? It's probably a stuck pixel, not a dead one - and a stuck pixel can often be fixed. Our free stuck pixel fixer rapidly cycles pure RGB colors full-screen to exercise the stuck sub-pixel back to life. No download, no signup, runs entirely in your browser.
Photosensitivity warning: This tool flashes colors rapidly and may trigger seizures for people with photosensitive epilepsy. Stop immediately if you feel any discomfort.
What is a stuck pixel?
A stuck pixel is a single sub-pixel that still receives power but is locked in one color - red, green or blue - instead of changing with the rest of the screen. On a black background it shows up as a tiny bright colored dot. Unlike a dead pixel, which is permanently black and usually a hardware failure, a stuck pixel is often recoverable.
How the stuck pixel fixer works (RGB color cycling)
Every pixel is built from red, green and blue sub-pixels. When one gets stuck, rapidly forcing all three channels to switch on and off can jolt it back into normal operation. Our fixer floods the screen with pure red, green and blue and cycles between them - the same technique commercial pixel-repair software uses, but free and in your browser.
How to use this stuck pixel fixer (step by step)
- 1.Find the stuck pixel first with a dead pixel test so you know exactly where it is.
- 2.Below, open a pure red, green or blue screen (or the color bars) and switch to full screen.
- 3.Press P to start auto-play so the colors cycle on their own, and leave it running for 20-30 minutes.
- 4.Check the pixel. If it's still stuck, repeat - some need several sessions to recover.
Solid Color Test
Check for dead pixels, bright spots, and color uniformity
Gradient Test
Check for banding, gamma, and smooth transitions
Pattern Test
Check geometry, sharpness, and pixel alignment
Brightness & Gamma
Check the gray ramp, posterization, and shadow / highlight detail
Contrast Test
Check full black/white swing and fine 1px transitions
Backlight Uniformity
Check clouding, backlight bleed, vignette, and IPS glow
Sharpness / Text
Check text clarity, color fringing, and scaling
Motion / Ghosting
Check pixel response time and motion blur
Flicker / Strobe
Check flicker and refresh-rate artifacts
Does it work on dead pixels?
Usually not. A dead pixel is permanently black because it receives no power - that's a hardware failure color cycling can't fix. If your dot is black on every color, treat it as a dead pixel and look at a return or warranty claim instead. Not sure which you have? Read our guide on How to test a screen to tell dead, stuck and hot pixels apart.
Other ways to fix a stuck pixel
- Gentle pressure: Turn the screen off, place a soft cloth over the spot, and press very lightly for 5-10 seconds, then power back on. Never press hard - you can crack the panel, especially on thin laptops and OLEDs.
- Warmth: Some users report that running the color cycler while the panel is mildly warm helps the crystals respond. Keep the device ventilated and never overheat it.
- Time: A few stuck pixels resolve themselves after a few days of normal use without any intervention at all.
When to give up and claim warranty
If you've run the stuck pixel fixer for a few sessions over a couple of days and the dot hasn't changed, it's likely permanent. Document it with a photo on the matching background and file a return or warranty claim - many premium monitors carry a zero-bright-pixel guarantee. See the full Dead Pixel Test FAQ for warranty thresholds by manufacturer.
Stuck pixel fixer FAQ
What does a stuck pixel fixer actually do?
It rapidly cycles pure red, green and blue full-screen colors over the affected area. The fast switching exercises the stuck sub-pixel, which can re-stimulate the liquid crystals or transistors that failed to switch on their own.
How long should I run the stuck pixel fixer?
Run it for 20-30 minutes at a time, then check the result. If the pixel is still stuck, repeat up to three sessions. Some stuck pixels recover in a few minutes; others need an hour or more. There's no guarantee, but color cycling fixes stuck pixels far more often than truly dead ones.
Does the stuck pixel fixer work on dead pixels?
Rarely. A truly dead pixel receives no power and has failed at the hardware level, so color cycling usually can't revive it. It's most effective on stuck pixels - bright red, green or blue dots that still light up but won't change color.
Is this stuck pixel fixer free and safe to use?
Yes. It's 100% free, runs entirely in your browser, and uploads nothing. Because it flashes colors rapidly, it includes a photosensitivity warning - avoid it if you're sensitive to flashing lights, and stop if you feel any discomfort.