White Screen: Full-Screen Plain White Page

White screen

One click fills your whole display with plain white. Press Esc to leave. Warm white, cool white and custom colours are available too.

The colour fills the whole screen. Press Esc or the Exit button to leave.

Or open a single colour:

What a white screen is useful for

Spotting dark pixels and dust: dead pixels and specks show up as dark dots on white. For a complete check, use the dead pixel test.
Checking backlight evenness: patches that are visibly darker, yellower or bluer than the rest show uneven backlighting or a tint across the panel.
Cleaning the screen: smudges and streaks are easier to see on white. Clean with the screen off or cool, then check again.
A soft light source: a white screen can light your face on a video call or help trace a drawing placed on a tablet. Warm white is gentler in the evening.

Turn the screen brightness up for lighting, down for checking uniformity — a dim white shows clouding better.
Night-light and blue-light filters tint the white yellow. Turn them off when checking colour.
The page cannot change your screen's hardware brightness; use the monitor buttons or system settings for that.
Your screen stays awake while the white screen is open, if your browser supports it.

How do I exit the white screen?

Press Esc, or move the mouse and click the Exit button in the top corner. On phones, use the browser's back gesture.

Does a white screen damage OLED displays?

Not in normal use. Like any static image, leaving it on at full brightness for many hours every day is not recommended on OLED.