Dead Pixel & Screen Tester
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Inspect your display with six solid colors. Works with a mouse, keyboard or touchscreen.
Starting color
How to check your screen
Clean the screen and choose a comfortable brightness. Start the test and inspect each color, including the edges. Hide the controls to inspect the entire test area; tap or click to show them again.
Look for dark dots on white, bright dots on black, or dots that stay the same color on red, green and blue. Gray can help reveal uneven brightness or image retention.
This is a visual inspection tool: it does not automatically detect or repair pixels. Browser controls may remain visible on devices without fullscreen support.
Check your monitor, laptop, tablet or phone screen for dead pixels, stuck pixels and uneven colors using solid-color test screens.