UtilityBaseScreen Tools
Screen tools help you inspect, clean, and diagnose any display directly from your browser. Use solid color screens for lighting, monitor cleaning, or checking backlight bleed, run a dead pixel test before a return window closes, or confirm the exact resolution and pixel density your device reports. Everything runs locally on your machine — nothing is installed and nothing is uploaded.
White Screen
Display a pure white screen in fullscreen — great for lighting and cleaning.
Screen Tools
Black Screen
Display a pure black screen to spot stuck pixels or rest your eyes.
Screen Tools
Dead Pixel Test
Cycle solid colors fullscreen to find dead and stuck pixels.
Screen Tools
Screen Resolution Checker
See your screen resolution, viewport size, and pixel ratio instantly.
Screen Tools
Fullscreen Color
Pick any color and display it fullscreen with brightness control.
Screen Tools
Online Ruler
An on-screen ruler in cm and inches — calibrate once with any bank card.
Screen Tools
Green Screen
Solid green fullscreen — test green subpixels or use as a chroma key backdrop.
Screen Tools
Red Screen
Fill your display with solid red to test the red subpixels.
Screen Tools
Blue Screen
Fill your display with solid blue to test the blue subpixels.
Screen Tools
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Frequently asked questions
Do screen tools work on phones and tablets?
Yes. Every screen tool runs in a mobile browser. Fullscreen behavior varies slightly between iOS and Android, but the color display, dead pixel test, and resolution checker all work on touch devices.
Can a white screen tool damage my display?
No. Displaying a solid color is no different from viewing any bright web page. If you leave a static image on an OLED screen for many hours, standard burn-in considerations apply, but short sessions are completely safe.
Why would I need a solid color screen?
Common reasons include using your monitor as a soft light source for video calls or photography, spotting dust and smudges while cleaning, checking for dead or stuck pixels, and testing backlight uniformity.