Simple full-screen color tools
Use white, black and custom color screens for lighting, focus, screen cleaning and monitor testing.
High brightness can feel harsh in a dark room. Lower brightness if your eyes feel strained.
Shortcuts: F fullscreen, Esc exit fullscreen where supported, Space controls, 1-9 preset colors, arrow keys cycle test colors. In dead pixel fullscreen, tap to advance and swipe left or right to change colors.
Popular tools
White Screen
Open a clean white screen for light, focus and cleaning.
Black Screen
Use a black screen for low light, focus and display checks.
Color Screen
Pick any full-screen color with HEX or RGB controls.
Dead Pixel Test
Cycle colors to inspect dead or stuck pixels.
Monitor Test
Check colors, gradients, grids, sharpness and backlight.
Screen Flashlight
Turn your phone, tablet or monitor into a light.
Zoom Light
Use your screen as soft light for video calls.
Browse by use
Fun screens
Harmless full-screen visual effects for jokes, videos and backgrounds.
Broken Screen Prank
A fake cracked glass screen effect with safe exit controls.
Fake Update
A generic update-style screen with custom progress.
Fake Blue Screen
A generic crash-style blue screen effect.
DVD Screensaver
A bouncing custom text screen. No real DVD logo.
Glitch Screen
A controlled digital glitch visual with motion warning.
Code Rain
A falling code rain canvas with color and density controls.
Common uses
- Use your screen as a light.
- Check for dead pixels.
- Clean your monitor.
- Improve video call lighting.
- Create a simple focus screen.
- Test colors on a display.
FAQ
Is ScreenTools free?
Yes. The tools run in your browser and do not require an account.
Does fullscreen work on phones?
Most modern mobile browsers support fullscreen or a similar screen mode. Some iPhone browsers may limit fullscreen behavior.
Can I share a custom color?
Yes. Use the copy link button on the color screen tool to share a direct color link.
Related guides
What Is a White Screen Used For?
Learn practical uses for a white screen, including light, video calls, cleaning, focus and monitor checks.
How to Test a Monitor for Dead Pixels
Use solid full-screen colors to check a monitor, phone or tablet for dead or stuck pixels.
How to Use Your Screen as a Light
Turn a phone, tablet or monitor into a simple light source using full-screen white and warm colors.