White Screen
Fill the whole screen with pure white — perfect for spotting dust and dead pixels, tracing paper, using it as a lightbox, or as a soft video-call fill light.
Open White Screen → BlackBlack Screen
Fill the whole screen with pure black — dim or blackout a display, rest your eyes, check an OLED for true blacks, or spot bright and stuck pixels and backlight bleed.
Open Black Screen → RedRed Screen
Fill the whole screen with pure red — test the red sub-pixels, check for tint and uneven brightness, or use it as a soft red bias light that's easy on the eyes at night.
Open Red Screen → ColorColor Screen
Switch the display between solid red, green, blue, white, black and more. Handy for color checks, mood lighting and testing individual sub-pixels.
Open Color Screen → TestDead Pixel Test
Cycle through solid red, green, blue, white and black so stuck or dead pixels show up as dots that don't match. Auto-advances, or step through by hand.
Open Dead Pixel Test → MonitorMonitor Test
Run through solid colours, black, white and grayscale steps to check a display for dead pixels, backlight bleed, colour uniformity and banding — all in one pass.
Open Monitor Test → FixStuck Pixel Fixer
Flash rapid colour noise over a box you drag onto a stuck pixel to exercise its sub-pixels and try to unstick it. Best on stuck pixels, not dead ones.
Open Stuck Pixel Fixer →