Black Screen
Click the button below to open a fullscreen black screen. Press Esc to exit.
Shortcuts: F or Space — fullscreen · W white · K black · R red · G green · B blue
Uses for a black screen
Backlight bleed test
A fullscreen black in a dark room reveals clouding, glow, and light leakage on LCD panels.
Hot pixel detection
Hot pixels (always-on) only show up on a black background — invisible on white or colored screens.
OLED battery saving
On OLED/AMOLED displays, black pixels are fully off and draw zero power.
Dark environment
Blank your monitor without turning it off — useful for video calls, presentations, or reducing distraction.
Frequently asked questions
- How do I test for backlight bleed with a black screen?
- Open the black screen fullscreen in a dark room. Look at the corners and edges of your display. Any glow, clouding, or light leaking through the panel is backlight bleed — a common LCD defect. OLED screens do not have this issue since each pixel emits its own light.
- Does a black screen save battery on OLED displays?
- Yes. On OLED and AMOLED screens, black pixels are completely off and draw no power. Displaying a black screen consumes significantly less battery than a white screen — useful when you need to conserve charge on a phone or laptop.