Screen Test Tool
Screen Dead Pixel Test
Free online screen test tool to quickly detect dead pixels, bright spots, or dark spots on your display using full-screen solid colors. Supports red, green, blue, white, black, and more. Works on desktop, mobile, and tablet screens.
Single Color Test
Click any color swatch to display it in full screen
Full Test
Cycle through all colors sequentially to test the screen
How to Use
- Desktop: Use ← → arrow keys to switch colors, press ESC to exit full screen
- Mobile / Tablet: Tap the left half to go to the previous color, right half for the next color
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