More
White screen & black screen
One click turns your whole screen white, black or any color you pick — for soft light on video calls, spotting dust, tracing or a quiet dark screen.
F full screen · ← → change color · ↑ ↓ brightness · Esc to exit · move the mouse or tap to show controls
Works in your browser. No account needed.
Frequently asked questions
Can a white screen replace a ring light on video calls?
It helps, but it is not a real ring light. A laptop or monitor gives off far less light than a dedicated lamp, and the light comes from one flat panel in front of you, so it works best in a dim room with your face close to the screen. Open the white (or warm light) screen on a second monitor, tablet or phone placed just behind your camera. The warm light preset looks more flattering than pure white for most skin tones.
Does a black screen save power or protect my screen?
On an OLED or AMOLED screen, black pixels are switched off, so a black screen uses very little power and nothing on the panel ages. On an ordinary LCD (most laptops, desktop monitors and many TVs) the backlight stays on behind the black, so it still uses power and the screen still glows slightly. To really save power on an LCD, turn the display off or let it sleep.
Does the brightness slider change my screen brightness?
No. A web page cannot control your display’s hardware brightness, so the slider darkens the color itself by laying a black layer over it. That makes the light softer, but on an LCD the backlight runs at the same level. For the brightest light, set the slider to 100% and turn your device’s brightness all the way up.
Why does my screen still turn off after a while?
Keep screen awake uses the Screen Wake Lock API, which works in current Chrome, Edge, Safari and Firefox but not in every browser or older device. Low Power Mode, battery saver or a device management policy can also refuse the request. The page tells you whether your browser supports it; if not, lengthen your device’s screen timeout while you use it.
Why doesn’t it go fully full screen on my iPhone?
Safari on iPhone does not let web pages enter true full screen, so the color fills the whole visible page instead and the address bar may stay. Turning the phone sideways or adding the page to your Home Screen gives you more of the screen. On iPad, Android and desktop browsers it goes truly full screen.
What is the white screen good for besides lighting?
A bright white screen shows dust, streaks and fingerprints clearly, so it is handy when cleaning a display. With paper held against a tablet or monitor on white, you can trace a drawing like a simple light box — keep the brightness moderate and do not press hard on the screen. A black screen in a dark room shows backlight bleed and glow at the edges of an LCD panel.
About this tool
This page does one simple job well: it fills the entire screen with a single solid color, in one click. White and black are the most used, but you can also choose a warm light around 2700 K, a cool daylight tone, pure red, green and blue, three gray levels, or any custom color. The screen goes truly full screen through the browser’s Fullscreen API; where that is not allowed, as on iPhone, the color still covers the whole visible page.
The most common reason people open a white screen is light for a video call. Placed behind or beside your webcam in a dim room, a bright screen acts as a soft fill light and removes harsh shadows. It is honest to say it is not a ring light — a screen is much dimmer than a proper lamp, and the effect fades quickly as you move away — but it is free and always at hand. Other everyday uses are finding dust and smears while cleaning a display, tracing a sketch through thin paper, and checking an LCD for backlight bleed on a black screen in a dark room.
A black screen is useful when you want a device to stay on but show nothing, for example a monitor during a presentation break or a phone used as a bedside clock. On OLED and AMOLED panels, black pixels are off, so it is genuinely dark and uses little power. On LCD panels the backlight keeps running, so the screen still glows a little and uses power; switching it off is the better choice there.
For longer sessions, Keep screen awake asks the browser for a Screen Wake Lock so the display does not dim or sleep, and the page tells you when your browser does not support it. An optional timer exits or dims the screen after the minutes you choose, the cursor hides after two seconds of stillness, and keyboard shortcuts cover everything. Everything runs locally in your browser — nothing is uploaded and no information about your screen is sent anywhere.