Screen Test - Dead Pixel Checker & Color Accuracy
Check your screen for dead pixels, stuck pixels, and color accuracy. Full-screen color cycling tool to inspect monitors, laptops, and mobile displays.
Dead Pixel Check
Easily spot dead or stuck pixels on your monitor with pure color backgrounds.
Color Accuracy
Verify color reproduction using standard RGB and CMY color patterns.
Immersive Mode
Distraction-free fullscreen mode for accurate inspection.
Click Start to enter fullscreen mode. Use arrow keys to switch colors.