Handy tools
Pixel Fix
Try to free a stuck pixel with a fast color-flashing box, or run a slow color cycle to check your screen.
A stuck pixel is a dot where one or more subpixels stay lit, so it keeps showing red, green, blue or white. Rapidly changing colors right over it can sometimes jog it loose. Drag the flashing box onto the spot, or run the slow color cycle to check the screen and help temporary image retention fade.
Tip: run it full screen at 100% brightness for 10–30 minutes. Leave the box parked over the stuck pixel. ESC exits anytime.
No guaranteed fix. Flashing may help a stuck pixel, but a dead pixel (always black) is a hardware fault no software can repair, and permanent OLED burn-in can't be reversed either. If the defect stays, check the manufacturer's warranty and dead-pixel policy.
Fast RGB flash box
A 140-pixel box switches at random between red, green, blue, white, black, yellow, cyan and magenta about 30 times a second. Drag it directly over the stuck pixel and leave it there.
PHOTOSENSITIVITY WARNING: the next mode flashes colors very rapidly. Rapid flashing can trigger seizures in people with photosensitive epilepsy. Do not use it if you or anyone nearby is sensitive to flashing lights. Look away if you feel unwell.
Slow color cycle
Fills the whole screen with 8 solid colors in turn, 4 seconds each, with no fast flashing. Use it to spot defects or to help temporary image retention (a faint ghost image) fade. It can't undo permanent OLED burn-in.
Solid color fill
Fill the whole screen with one steady color to spot stuck or dead pixels against a plain background.
Fill your whole screen with a pure, solid color in one click — white, black, red, green, blue and more. Handy as a soft light source, a background to hunt for dead or stuck pixels, a plain backdrop for photos and video, or to check screen cleaning and backlight bleed. No install, runs right in the browser.
Tip: click the screen or use the arrow keys to switch color, and press ESC to exit. Works best in full screen at 100% brightness.
Or pick a color
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Pixel Fix is a free browser tool for stuck pixels. Drag a 140-pixel box that flashes eight colors about 30 times a second over the stuck dot and leave it for 10–30 minutes at full brightness; sometimes that is enough to free a subpixel that stays lit. A slow full-screen cycle (8 solid colors, 4 seconds each) and a solid-color fill help you spot defects and let temporary image retention fade.
It can't repair a dead pixel (always black) or reverse permanent OLED burn-in, and no recovery is guaranteed. The fast flash can trigger photosensitive seizures, so it only starts after you tick the warning box.
Frequently Asked Questions
Q. How do I fix a stuck pixel?
A. Drag the flashing box directly over the stuck pixel and leave it running for 10–30 minutes at full brightness. The box switches between 8 colors about 30 times a second, which sometimes frees a subpixel stuck on, but it is not guaranteed.
Q. What's the difference between a stuck pixel and a dead pixel?
A. A stuck pixel stays lit in one color such as red, green, blue or white, and flashing may help it. A dead pixel stays black because it gets no power; that is a hardware fault software cannot fix, so check your warranty instead.
Q. Can this fix OLED burn-in?
A. No. Burn-in is permanent wear of the OLED material and cannot be reversed. The slow color cycle (8 colors, 4 seconds each) can only help temporary image retention fade.
Q. Is the flashing mode safe?
A. The box changes color about 30 times a second, which can trigger seizures in people with photosensitive epilepsy. It only starts after you tick the warning box; skip it if you or anyone nearby is sensitive to flashing light.