Red Screen
The Red Screen is a free, full screen browser tool that gives you a solid red fill in one click. Whether you need it for testing a display, adding a color background for a shoot, or just want a bold red screen for a quick effect, this saves you from digging through settings or downloading anything. It runs entirely in your browser, needs no install or sign up, and renders locally so nothing you see is ever uploaded anywhere. If you’re testing across multiple colors, check out our full Color Screen tool, or compare it against our White Screen for brighter testing needs.
How to Use the Red Screen
- Click Launch full screen below.
- Use the on screen controls (they fade in when you move your mouse or tap) to adjust color, speed or timing.
- Press F or double click the screen for true browser full screen, and Esc any time to exit.
Quick tip: If you’re using this to test a display, view it from a few different angles. Color shifts are often easier to spot on the edges of the screen than dead center.
Why Use a Red Screen?
Whether you’re testing a display, recording, streaming, or just need a quick full screen effect, the Red Screen is ready in one click. No downloads, no watermark, and it works on any device with a modern browser.
What a Red Screen Is Used For
Turns out a solid red screen comes in handy more often than you’d think. Here are some of the ways people use it:
- Testing a new monitor or TV? A solid red screen makes it easy to spot dead pixels, color banding, or uneven tint across the display. If you want a deeper technical breakdown of how this works, RTINGS has a solid guide on dead pixel testing methods.
- Need a bold background for a shoot or stream? Prop up a screen running this behind you for an instant colored backdrop, no gels or lighting gear needed.
- Checking projector or display calibration? Solid colors like red help reveal color accuracy issues that white screens can miss.
- Want a warning or alert style overlay? A full red screen makes an obvious visual cue for demos, presentations, or signaling something needs attention.
- Doing a quick color therapy or ambiance test? Some people use colored screens for mood lighting or simple visual experiments.
Red Screen Test: What to Look For
A solid red screen shows problems that white and black screens can hide. Launch the red screen, switch off any night mode, and scan the whole panel for a minute or two.
Dead or stuck pixels. A dead pixel stays dark against the red, while a stuck pixel shows a different colour. Our stuck pixel fix guide and our explainer on dead pixels on a laptop screen cover what to try next.
Uneven tint. Patches that look pinker or darker than the rest point to panel uniformity problems. They are easiest to spot near the edges.
Backlight problems. Pair this check with a black screen. Our screen bleeding test shows how to check for backlight bleed.
Burn-in often shows as a tint in one colour, and a full red screen is one of the checks. See the full screen burn in test for the other colours.
FAQ
Is Red Screen safe to use?
Yes, it runs entirely in your browser. No files are uploaded, no data is collected, and nothing installs on your device. Close the tab any time and nothing is left behind, and there’s no account or login required at any point either.
Does it work on mobile?
Yes, it works on phones and tablets with a modern browser. Tap the screen to bring up controls, and tap again to hide them if you want a completely clean view.
Can I change the color?
Yes, while it defaults to red, you can adjust color, brightness, and speed from the on screen controls. This makes it handy for more than just red screen use cases.
Do I need to download an app?
No. It’s 100 percent browser based. Just open the page and click “Launch full screen,” and you’re set in seconds.
How do I make my whole screen red?
Click Launch full screen, then press F or double click the screen for true full screen. Press Esc any time to exit.
Why does the red look different on two monitors?
Panels differ in calibration, brightness and colour accuracy, so the same red can look warmer or cooler. Compare both at the same brightness, and treat a large difference as a reason to check your display settings.
Related Tools
We’ve got a few other screen tools if red isn’t quite what you need. Check out our White Screen for a clean bright fill, Black Screen for OLED testing or a dark mode break, or Color Screen if you want to pick your own shade. More screen tools are on the way too, so check back if you don’t see exactly what you’re looking for.
