Screen Brightness Test

Free white screen with an adjustable brightness overlay. Compare levels side by side to judge how bright your display really gets before you buy.

Brightness100%

This is a simulation. It dims the image on screen and does not change the actual backlight of your display, so it cannot measure how bright your screen really gets. Use your monitor or operating system controls for that.

Try another tool

Same job, different channel

White Screen#FFFFFFFree full screen white display. Use it to clean your monitor, spot dead pixels, or light your face on a video call. No install, works instantly.
Black Screen#000000Free full screen black display. Check your monitor for backlight bleed, light leaks and stuck pixels, or save power on an OLED panel. Runs instantly.
Red Screen#FF0000Free full screen red display for testing the red subpixel channel on your monitor, TV or phone. Useful for spotting dead pixels and colour faults.
Green Screen#00FF00Free full screen green display for checking the green subpixel channel, testing chroma key setups, or hunting for dead pixels on any display.

Different job

All 15 Colour Screens

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