LCD Screen Tester
Test your display for dead pixels, stuck pixels, and uniformity issues
Click to cycle through all test patterns. Press ESC to exit anytime.
Grayscale Test
Click any shade to view fullscreen. Check for banding or uneven gradients.
Dead Pixels
Appear as black dots on bright colors. Permanently non-functional pixels.
Stuck Pixels
Appear as colored dots. Sometimes fixable with pixel-fixing videos.
Backlight Bleed
Light leaking from edges, visible on black screen in dark room.
Related Tools
Test color accuracy and gradient smoothness on your LCD
Detect backlight bleeding around screen edges
Check your LCD screen for image retention issues
Verify your monitor runs at its advertised refresh rate
Test for ghosting and motion blur on your LCD screen
Check pixel density to spot dead pixels more easily
Check your screen resolution before running tests