[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"content-seo:whiteScreenTest":3},{"description":4,"seo":5,"faq":8},"Press Open full screen and your whole display turns pure white (#FFFFFF), with the address bar and taskbar hidden wherever the browser allows it. Turn the brightness all the way up and you get a soft, even light: a quick fill light for a video call, a stand-in for a small softbox when shooting a product up close, or a bright panel that shows dust and smudges while you wipe the monitor. How bright it gets and its color temperature depend on your display, so it won't replace a real studio light.\n\nWhite is also the best background for spotting dead pixels, which show up as tiny black dots. Click or tap the screen to cycle through 9 solid colors: white, black, red, green, blue, cyan, magenta, yellow and gray. Black reveals stuck pixels that stay lit and backlight bleed in a dark room; red, green and blue expose a faulty subpixel; gray makes uneven brightness easier to see. On a keyboard, → ↑ or Space moves forward, ← ↓ goes back and ESC exits, and the on-screen labels fade after about 2.5 seconds so nothing covers the panel.\n\nIt all runs in the browser with nothing to download. Handy when checking a used monitor or phone before you buy, after cleaning a screen, or whenever you just need a blank white screen.",{"ogTitle":6,"ogDescription":7},"White Screen | Full-Screen White Light & Dead Pixel Test - Giggleus","⚪ Turn your display pure white in one click: a soft light for video calls, or a clean background to spot dead pixels and dust. 9 solid colors, no install.",[9,12,15,18],{"question":10,"answer":11},"How do I make my screen completely white?","Press Open full screen: the page fills the display with pure white (#FFFFFF) and switches the browser to full screen. Press ESC or the Exit button to leave.",{"question":13,"answer":14},"Can I use a white screen as a light?","Yes. At maximum brightness it works as a soft fill light for video calls or close-up product shots. It is dimmer than a ring light or softbox, and its color temperature depends on your display.",{"question":16,"answer":17},"How do I check for dead pixels with it?","Look for tiny black dots on the white screen; those are dead pixels. Then switch to black, red, green and blue: a dot that stays lit is a stuck pixel, which the Pixel Fix tool may help with. Dead pixels can't be fixed by software.",{"question":19,"answer":20},"Why do I still see the address bar on my phone?","Some mobile browsers, including Safari on iPhone, don't let web pages enter true full screen. The color still fills the entire visible area."]