📺 Monitor & Screen Tester
Essential tool for new devices. Enter fullscreen mode and click to cycle through pure colors to easily spot screen defects.
Black Screen
Check for backlight bleeding around edges and stuck bright pixels in a dark room.
White Screen
Check for color uniformity, yellow tinting, and dead dark pixels.
RGB Subpixels
Cycle Red, Green, and Blue to isolate specifically broken subpixels.
After entering fullscreen, click or tap to cycle colors.
Press
Press
Esc to exit the test.