Dead pixel test

Step through red, green, blue, black and white full screen to find dead and stuck pixels, then run the pixel fixer over a stuck one. Free, in the browser. You get: every dead or stuck pixel found — and a fixer for the stuck ones.

Go full screen and step through red, green, blue, black and white. A dot that stays black on every colour is a dead pixel; a dot stuck on one colour is a stuck pixel — run the pixel fixer over it for 15 minutes.

Full screen · red

Tap for the next colour · use the bar at the bottom to come back

On white
dark spots, pressure marks, lines

On black
bright dots, backlight bleed, glow

On red, green, blue
dead or stuck pixels, colour lines

Also under Calculators: Hex converter · Screen test · Touch screen test · White screen · Black screen · What time is it

Press Start dead pixel test, or type anything else you need.

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