Black Screen
Fullscreen tool for display testing. Works in-browser, no signup.
Black
Pure black — stuck-bright pixel test, OLED burn-in reset, ambient screensaver.
Press Esc to exit
About this tool
A full-screen pure black background. Common uses: (1) spotting stuck-bright pixels — any glowing dot is a fault; (2) resetting OLED burn-in by giving pixels time in an off-state; (3) using as a passive screensaver when you don't want a persistent image; (4) creating a dark backdrop for photography or filming.