Dead Pixel Tester
Check a screen for dead, stuck and bright pixels. It runs directly in your browser.
Local processingProcessed locally in your browser
Ready to inspect your screenChoose a starting color, then open the screen test.
Black
#000000This test displays exact browser colors for visual inspection. Clean the screen first and check at a comfortable brightness. Native fullscreen depends on the browser; system bars may remain visible on some phones and tablets.
Good for
Display solid black, white, red, green, blue and gray screens to visually inspect a monitor, laptop, tablet or phone display.
Limits
This is a visual inspection tool and cannot diagnose or repair hardware. Browser or system controls may remain visible when native fullscreen is unavailable.