White Screen

What people use a white screen for

A free light for Zoom, Teams and Meet

A bright screen is a large, soft light source, which is what makes faces look natural on camera. Put a tablet, phone or spare monitor showing white in front of you, a little above eye level, about an arm’s length away. In a dim room that is often enough to remove the grainy, dark look of a webcam. The Zoom lighting page adds warm and cool presets, and the Zoom lighting guide covers one-, two- and three-device setups and how to stop glasses glare.

Cleaning a monitor, laptop or phone

Dust and fingerprints are almost invisible on a dark screen and obvious on white. Open the cleaning mode, which hides every control, then wipe gently with a dry microfibre cloth from top to bottom. For stubborn marks, mist the cloth (never the screen) with distilled water. Switching to black at the end shows streaks and lint that white misses. Our 5-minute monitor cleaning routine explains what is safe on matte, glossy and OLED screens.

Checking for dead and stuck pixels

On a white field, a dead pixel shows as a tiny black dot because none of its red, green or blue sub-pixels light up. A stuck sub-pixel shows as a red, green or blue dot. White is a good first pass, but the reliable method is to step through white, black, red, green and blue — that is exactly what the dead pixel test automates. Read how to find dead pixels for a step-by-step method, and stuck pixel fix methods if you find one.

Brightness, uniformity and tint

White is the hardest colour for an LCD backlight to show evenly. Look for darker corners, a yellow or pink tint along one edge, or cloudy patches. Some variation is normal on every panel; it matters when it is obvious from your normal seat or clearly worse than another unit of the same model. For the opposite test, use the black screen or backlight bleed test in a dark room. A mid grey screen reveals banding and the “dirty screen effect”.

Lightbox, tracing and reading

A tablet at full brightness makes a simple lightbox: lay thin paper over it and trace. Keep the pressure light — pens can scratch glass and pressure can mark an LCD. A dimmed white or yellow screen is also a soft reading light for a paper book.

Flashlight, ring light and photography

No torch handy? The screen flashlight fills the display with bright white or a red night-vision light. For selfies and makeup, the ring light mode lights only the edges of the screen, like a real ring light. Product photographers use a white screen behind small, translucent objects as an even backlight.

A white image file instead of a page

For a TV with a USB port, a projector, a wallpaper or a design background, download a solid PNG from white screen image in 1080p, 1440p, 4K or 8K, in white or any colour. The image is generated in your browser, so it is instant and private.

Brightness tips for the brightest white

• Raise the hardware brightness. The on-page slider only dims. Real brightness comes from your system settings or the monitor’s buttons.
• Turn off auto-brightness and battery saver. Both quietly cap the backlight. Laptops on battery can be 20–40% dimmer, so plug in.
• Disable warm filters for a neutral white. Night Light (Windows), Night Shift and True Tone (Apple), Eye Comfort (Samsung) and f.lux all tint white towards orange.
• Watch HDR on Windows. With HDR on, ordinary white can look grey. Raise the “SDR content brightness” slider under Display → HDR.
• Typical brightness: office monitors 250–350 nits, good laptops 400–500, modern phones 800–1,000+ in high-brightness mode. That is why a phone close to your face can be a stronger light than a big monitor across the desk.
• OLED caution. OLED screens may dim a full white image automatically (ABL) and should not show the same bright image for many hours. Short sessions are fine.

Works on every device

The white screen runs in any modern browser — Chrome, Edge, Firefox, Safari and Samsung Internet — on Windows, macOS, Linux, ChromeOS, Android and iOS. Desktop browsers and Android support true fullscreen. iPhone Safari does not allow web pages to go fully fullscreen, so the white overlay fills the browser area; rotate to landscape and hide the toolbar by scrolling for the most coverage, or add the page to your home screen. Smart-TV browsers usually work as well, or you can cast a laptop tab.

There is nothing to install, no account and no ads. The site is a set of static pages with one small script; the colours are drawn locally, nothing is uploaded and no cookies or trackers are used. See the privacy policy.

If something does not work

The screen does not go fullscreen. Some browsers need a direct click, and embedded or in-app browsers (inside social apps) often block fullscreen. Open the page in your main browser. On iPhone, fullscreen for web pages is limited by Safari; the white overlay still covers the page.

The white looks yellow or blue. A blue-light filter, a warm or cool colour profile, or the panel’s own white point is tinting it. Turn the filters off and compare with another screen before assuming a fault.

The screen turns off after a few minutes. That is your system’s sleep timer. Lengthen it in display or power settings for the duration of your call or cleaning, then set it back.

Toolbar keeps appearing. The toolbar shows when the mouse moves or you tap, and hides after a few seconds. Cleaning mode hides it completely.