ONE SMALL TASK, DONE.
Dead Pixel Test
Fill the screen with plain colors to spot dead, stuck or discolored pixels on a monitor, laptop or phone.
Runs on your devicePress Start to begin. Nothing is recorded or uploaded.
How to use
- Clean the screen and press Start test.
- Use full screen and cycle through the colors.
- Look closely for dots that stay black or one color.
Good to know
Cycle through black, white, red, green, blue and grey. A dead pixel stays black on every screen; a stuck pixel keeps one color.
Use full screen and clean the display first, so dust is not mistaken for a pixel fault. This test finds faults; it cannot repair them.
This test runs in your browser. Nothing about your device, your input or your microphone is sent to our server, and no result is stored. Advertising uses external services. Social and coffee links open external websites.
Questions
Dead or stuck: what is the difference?
A dead pixel stays black on every color. A stuck pixel shows one bright color, often red, green or blue.
Can this fix a stuck pixel?
No. It helps you find and document faults, for example for a warranty claim.
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