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Dead Pixel Test
Find and fix stuck pixels
Dead Pixel Test
Fill your screen with pure colors to easily spot dead, stuck, or hot pixels. Click anywhere during the test to mark a bad pixel.
Press Space/Arrow keys or click to cycle colors. Press ESC to exit.
0 Bad Pixels Marked
Try Pixel Fixer
Stuck pixels (red, green, or blue) can sometimes be revived by rapidly flashing colors. Dead pixels (black) cannot be revived.
Screen Replacement Options
Dead Pixel Test
Click or press Space to change colors.
Click any dead pixel to mark it.
About this tool
This is a free browser-based diagnostic tool provided by ay5uh.com to help you test and troubleshoot your hardware. It runs entirely on your device with no installation required.