What to do
Open a solid color in fullscreen and look over the whole screen. Repeat with white, black, red, green, and blue.
Dead Pixel Test
Run full-screen solid color panels to find stuck pixels, dead pixels, and uneven display defects.
Color
In fullscreen, press Esc or tap the test area to exit.
White pixel sweep
Local history
Save a result to keep it in this browser. History holds your five most recent saved results for this test.
No saved results yet.
How to use this test
What to look for
A spot that appears at the same place on several colors is worth checking again after cleaning the screen.
Patterns provide visual references for your own inspection. Refresh estimates come from animation callbacks, not direct panel telemetry. Lighting, display processing, viewing angle, and browser behavior affect results.