WhitestScreen

Red Screen

A free fullscreen red screen for night and mood lighting, with a brightness slider and PNG download.

By , WhitestScreen.com

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A free fullscreen red screen for mood lighting, photography backdrops, and screen testing. Adjust the brightness, go fullscreen, or download it as a PNG at the resolution you need.

Red is also the traditional choice for astronomers, pilots, and darkroom photographers working in the dark, since it's less disruptive to eyes already adjusted to low light than white or blue would be. If you need a soft reading light overnight without fully waking yourself up, it works better than your phone's regular white backlight.

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How to use it

  1. Set the brightness with the slider in the settings panel.
  2. Tap the fullscreen button on the color area. Press Esc, or use your browser's exit control on a phone, to leave fullscreen.
  3. To keep a copy, pick a size under Download (1080p, 4K, or your own screen) and save the PNG.

Watch out for: for night use, keep the brightness low. Dim red light is what helps your eyes stay adjusted to the dark, and a bright red screen works against that.

Frequently asked questions

Why do photographers and astronomers use red light at night?
Red light has a long wavelength that doesn't trigger much breakdown of rhodopsin, the light-sensitive pigment in your eye's rod cells that handles night vision. That's why astronomers, pilots, and photography darkrooms use red light specifically: it lets you see well enough to work while your eyes stay adapted to the dark. A red screen works the same way in a pinch.
Is color therapy with a red screen backed by science?
Chromotherapy is a real practice some people use for relaxation or mood, but it isn't a medically validated treatment, and there's no solid clinical evidence it treats any condition. Using a red screen for a calming atmosphere or a photography backdrop is a legitimate use. Just don't treat it as medicine.

Cedrick Reese built this red screen. The color is #E02424, a deep red rather than pure #FF0000. That suits mood and night lighting, but for checking red subpixels the Dead Pixel Test's pure red is the better tool. The value is fixed in the page and no outside data is involved.

About the creator

WhitestScreen.com was founded by Cedrick Reese, a retired veteran and web developer who enjoys building free, user-friendly online tools that simplify everyday tasks. More about Cedrick Reese →