Dead Pixel & Screen Test
1Free dead pixel test: fill your screen with solid colors (red, green, blue, white, black) in full screen to spot dead or stuck pixels, dust and backlight problems on a monitor, phone or TV.
Click a color to fill the screen. Press Esc or click to exit. Look closely for pixels that stay a different color.
Click or press Esc to exit
A dead pixel stays black; a stuck pixel stays one color. Cycling between colors can sometimes revive a stuck pixel.