Free browser tool · no install
Red Screen
Pick a color to open its dedicated full-screen tool.
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Watch: Red Screen in action
See it fill the screen edge-to-edge, then open it full screen on your own display.
Open a full-page red screen instantly in your browser. This free tool fills your entire screen with pure #e11d2e in one tap — perfect for night light, alerts, testing. No download, no install, works on any device.
Ways to use a Red Screen
Check for stuck red subpixels
A pure red channel reveals permanently stuck or failing red subpixels that other colors can hide — one of the first screens to run in a diagnostic pass.
Warm fill light that flatters on camera
A warm red fill neutralizes cool, unflattering room illumination on webcam sessions and adds a cozy glow to evening streaming.
Protect night vision
Red light doesn't ruin your eyes' dark adaptation. A red full-screen is ideal for dark rooms, astronomy, and late-night work.
Safe light for photography
Red is a classic darkroom safe light — use a red full-screen when handling light-sensitive materials.
Why people use this
Fill the screen with red screen
Display pure #e11d2e edge-to-edge on any monitor, laptop, phone, or tablet. Tap any tile to preview, then go full screen with one click.
Use it as a plain, distraction-free background
A solid red screen works as a clean backdrop for video calls, a calming light source, or a focus-friendly work screen.
Download red screen as a high-quality PNG
Export the red screen color as a lossless PNG in any resolution — HD, 4K, square, story, or a custom pixel size you choose.
Frequently asked questions
How do I open a full-screen red screen?
Select the red screen tile on this page, then press Go Full Screen. Your browser fills the entire screen edge-to-edge with #e11d2e. Tap anywhere or press Escape to exit.
Can I use the red screen for a video call or Zoom background?
Yes. Open the red screen on a second device or window, position it behind you, or use it as a light source to evenly light your face on a call.
Can I download the red screen as an image?
Yes. Pick the red screen color, choose a size preset or type a custom width and height, then press Download PNG. You'll get a lossless, high-quality image at exactly that size, rendered in your browser — nothing is uploaded.
Is the red screen tool free to use?
Yes, this tool is 100% free and works entirely in your browser. No account, no sign-up, and no images are uploaded or stored.
Try another color
Related tools & pages
Related guides
Learn how to get the most out of this tool.
How to Check for Dead Pixels (and Stuck Pixels) on Any Monitor
A full-screen color test is the fastest way to find dead and stuck pixels. Here's how to run it properly, which colors to use, and what to do if you find one.
How to Fix a Stuck Pixel with a Color Flash (and When It Won't Work)
A stuck pixel is often fixable with a rapid red/green/blue flash. Learn the method that sometimes revives a stuck subpixel — and when to give up and claim warranty instead.
Popular full-screen colors
Each link opens instantly in full screen. White and black are the most searched, but green, blue and pink are popular for video and streaming setups.
More Screen Tools
Zoom Light Screen
Adjustable-color full-screen light for video calls — dial in the perfect color temperature to look natural on camera.
Ring Light Screen
Create a custom-colored glow ring around your webcam window — softer than a solid fill and mimics a physical ring light.
Screen Flashlight
Instant max-brightness white fill — turns your screen into a portable flashlight for finding things in the dark.
Broken Screen Dummy
Convincing cracked-screen overlays — pick from spiderweb, shatter, glitch, or LCD bleed styles to prank a friend.
Fake Update Screen
Classic Windows, macOS, or Linux-style fake update screens — lock the display and watch coworkers think you're updating.
No Signal Screen
Animated TV static with a bouncing NO SIGNAL overlay — convincing enough to make someone check the cables.