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- Keyboard, mouse & screen
- White screen
White screen
Press View in full screen to fill your whole screen with white. Press Esc, or double-click or double-tap, to come back.
Your favorites come first on the home page and under the star at the top (in this browser).
In full screen, press Esc to exit.
What it's for
- Cleaning: dust, smudges and fingerprints stand out on white.
- Light: a soft, even light, for example for a video call; it's as bright as your screen's brightness setting.
- Checking the screen: see whether the white looks even across the whole screen, without darker or tinted areas.
Other colors
The buttons change the color: white, black, red, green, blue, yellow, cyan, magenta and gray, or any color you pick with the color selector. To check every pixel, the dead pixel test goes through the colors one by one.
Full screen
Full screen hides everything except the color. If your browser doesn't allow full screen (some phones don't), the color fills the whole window instead.
Frequently asked questions
How do I exit full screen?
Press Esc, or double-click or double-tap the screen.
Is it pure white?
Yes: #FFFFFF, red, green and blue at their maximum (255, 255, 255).
Will my screen turn off?
The page doesn't keep the screen on: your device dims or turns it off after its usual time.
Can I choose another color?
Yes: press one of the color buttons, or pick any color with the color selector.