How to use this tool
- 1Pick a flash speed (Fast works for most stuck pixels).
- 2Tap 'Start pixel fixer' to flash colors full screen.
- 3Position the flashing area over the stuck pixel and leave it running 10 to 30 minutes.
- 4Tap the screen or press ESC to stop, then check whether the pixel recovered.
About this test
A stuck pixel is a sub-pixel frozen on one color (red, green or blue) because its transistor stopped switching. Rapidly cycling colors forces it to turn on and off many times per second, which can free it. This is different from a dead pixel, which stays black and rarely recovers.
The method is safe and brief, and it works best on pixels that only recently became stuck. Stubborn ones may need several sessions. Confirm the result afterward with our Dead Pixel & Screen Test.
Privacy: this tool runs entirely in your browser. No image, audio or device data is recorded or sent to any server.
Frequently asked questions
Is flashing colors safe for my screen?
Yes. It only displays changing colors for a short time, which is safe for LCD and OLED panels. If you are sensitive to flashing light, look away while it runs.
Will it fix a dead pixel too?
Usually not. Dead pixels get no power and stay black; this technique only helps pixels that are stuck on a color.