Dead Pixel Test

Cycle through black, white, red, green, blue, and gray test screens in fullscreen to inspect your display.

Test color

Custom color

Inspect the panel at normal viewing distance and close range. This visual test can reveal unusual pixels, but it cannot determine a manufacturer's pixel-defect warranty policy.

How to use this Dead Pixel Test

Check a display for stuck or dead pixels with fullscreen solid colors. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.