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GetWhiteScreen

White screen

A white screen is a full-screen, pure #FFFFFF display used for cleaning, pixel checks, calibration, tracing, and chroma key. Go fullscreen to fill the whole display, or pick another colour.

F for fullscreen, Esc to exit

What is a white screen used for?

A full white screen is the simplest test pattern there is, and the most misused. Here is what it is actually good for, and where to go when it is the wrong tool.

  • Finding smears and fingerprints

    Oily marks scatter light and show as grey haze against white. Dust is the exception: it hides on white, so use the black screen with a lamp raked across the glass.

  • Checking for dead pixels

    A dead pixel shows as a dark dot on white. A stuck pixel is lit and hides on white, which is why the dead pixel test cycles five fields instead of one.

  • Judging uniformity and tint

    Turn auto-brightness off and step back about a metre. Dark corners, bright patches, or a yellow cast show up on white before anything else. The white screen test explains which of those are normal.

  • Lighting

    A white field turns a laptop or monitor into a soft fill light for video calls and product shots, and a tablet into a tracing panel. The light box adds two warmer whites. While fullscreen, the page asks the browser to keep the screen awake, so a long session does not time out.

  • A white image file

    Need it as a picture for a wallpaper, slide, or TV? Download it below at 1080p, 1440p, 4K, or your screen's exact resolution.

Download as an image

The colour currently selected above (#FFFFFF) as a PNG. Made in your browser; nothing is uploaded.

Colors

Each colour has its own page explaining what it is actually good for. Or use the picker above for anything else.

BlackDust and bleedRedNight visionGreenChroma keyBlueBlue keyingYellowStuck blue checkOrangeWarm night lightPinkAccent lightCyanStuck red checkPurpleStreaming light

Tools

Same fullscreen canvas underneath, each one aimed at a single fault, each with notes on what the result actually means.

  • White Screen Test Check a white field for dust, dead pixels, uniformity, and tint.
  • Dead Pixel Test Cycle white, black, red, green, and blue to find faulty pixels.
  • Stuck Pixel Fixer Rapidly flash colors over a stuck pixel to try to un-stick it.
  • Backlight Bleed Test Spot light leaking around the edges of an LCD panel on black.
  • Screen Burn-In Test Reveal retained images and uneven wear on OLED and plasma panels.
  • Monitor Test Full sweep: pixels, bleed, uniformity, and color channels.
  • Light Box Use the screen as a tracing panel or soft photography light.

Questions

How do I test for dead pixels?
Go fullscreen and cycle white, black, red, green, and blue, checking the whole panel on each. Each field catches a different fault, so one colour on its own tests about a third of the problem. The dead pixel test does the cycling for you.
Can I use this as a green screen for video calls?
On a second screen behind you, yes, and most conferencing apps will key it. Two things decide whether it looks good: even lighting on the screen, and keeping yourself far enough in front of it that green does not spill onto your hair and shoulders.
Does fullscreen work on iPhone?
Not really, and not because of this site. iPhone Safari has no fullscreen API for web pages at all, so the colour fills the page and Safari's bars stay put. The colour field itself is identical, which is all that matters for every test here. Android Chrome and every desktop browser do go properly fullscreen.
Is it free, and is there a catch?
Free, no account, no upload. Traffic is counted with a cookieless analytics install and nothing about your screen leaves the browser. The privacy page lists exactly what loads.
What are the keyboard shortcuts?
F or Space to go fullscreen, Esc or a click to come back. On the cycling tests, Space and the arrow keys move between fields.