Pure Background fills your whole screen with one solid color: black, white, or any custom color you pick. Choose a box above and it goes full screen in a single click. It is free, there is no sign-up, and it works in any modern browser.
Why I built Pure Background
This started with my one-year-old. He loved listening to songs on the computer, but the videos that played along with them were a wall of flashing colors and cartoons that pulled his attention away from simply listening. What I really wanted was nothing on the screen at all, just a plain black background or a quiet clock, so the music could play without the picture stealing the show. I couldn’t find a tool that did that in one click, so I made one. It has turned out to be handy for plenty of other things too, like resting a screen, testing a monitor, or a calm clock, but that distraction-free screen is still the whole point.
What can I use a full-screen color for?
A solid full-screen color is handy for more than you might think: a clean background for music and focus, mood lighting for a room, a plain wall behind you on video calls and photos, a color reference while you design, or just a calm screen with nothing on it. The sections below go through the ones people reach for most.
Test your monitor for dead or stuck pixels
Fill the screen with a solid color and look closely for any dot that does not fit in. A dead pixel stays black whatever color you show; a stuck pixel stays lit in its own color. Run through white, black, red, green, and blue and a faulty pixel will give itself away against at least one of them.
Check for backlight bleed and screen uniformity
In a dark room, set the screen to pure black and study the edges and corners. Faint glowing patches are backlight bleed or IPS glow, common on LCD panels. Switch to pure white or grey instead and you will pick out uniformity problems, dust, or smudges across the whole display.
Use a white screen as a lightbox
A full white screen makes a quick, free lightbox. Lay a sheet of paper over the display to trace a drawing, or point it at yourself as a soft fill light for video calls and close-up photos. Push your screen brightness up for a brighter, more even glow.
Why doesn’t it open full screen on its own?
Almost every modern browser only lets a page go full screen in response to something you do, like a tap or a click, and never on its own. It is a built-in privacy and security rule, not something this site can switch off, so a page can’t jump straight to full screen the moment it loads. The good news is that it only ever costs you one click: as long as you do not want to change any settings, you pick your color or clock and it fills the screen right away.
How do I exit full screen?
Press Esc or double-click anywhere. On a phone or tablet, double-tap or long-press the screen.
How can I send feedback?
Got an idea, spotted a bug, or wish this did something it doesn’t? I’d love to hear it. Just fill in the short feedback form — no sign-up, and it only takes a minute.
Can I support Pure Background?
Thank you for asking. Pure Background is free, has no ads, and does not use analytics cookies. There is currently no support option available.
If you would like to support the site in the future, you can let me know through the feedback form. If there is enough interest, I may add a simple optional support link later.
Privacy policy
Pure Background is free and needs no account, sign-up, or registration. It sets no cookies and runs no advertising or third-party tracking. The only thing it saves is your own settings: your custom color, and on the clock pages the format, color, size, brightness, and drift options. Those live in your browser’s localStorage so the tool can remember how you like it next time. They never leave your browser, they are never sent to us or shared with anyone, and you can wipe them any time by clearing your browser’s site data.