Screen Lama · the display is the instrument

A Blank Screen, Any Color, One Tap Wide

White for light and pixel checks, black for bleed, or any hex you type. Fullscreen instantly — nothing installed, nothing sent.

Plate I — the screen itself#ffffff
Tap for fullscreen · Esc brings you back

Keys: F fullscreen · ←→ switch color · 1–6 presets · Esc exit

What your device reports: checking fullscreen and wake-lock support…

Jobs a blank screen gets hired for

A light, right nowWhite at full brightness turns a laptop into a soft panel light — video calls, desk makeup, reading a receipt against the glare.
Dead-pixel spottingDefective pixels hide in busy wallpaper and jump out on flat color. White exposes dark dots; black exposes glowing ones.
Cleaning without guessingEvery smudge and fingerprint is visible against solid white. Wipe, glance, done — no tilting the screen at the window.
Grading a new panelChecking a monitor while the return window is open: cycle white, black and the RGB trio, then judge the edges on black for bleed.

Where this page stops — said out loud

A browser can't touch hardware brightness, so the light you get is capped by the slider you set in your OS. It also can't see your panel: this page paints the test conditions, and your eyes do the judging — our guided hunt tells you exactly what to look for. And on iPhone, Safari forbids true fullscreen for web pages; installing this site to the home screen removes the browser bars honestly instead of pretending they're not there.

Adjacent instruments, same desk

Light panelThe lamp job, done properly — a color-temperature slider from candle-warm to daylight-cool, with the screen held awake. Dead-pixel huntA guided walk through white, black, red, green and blue, with a plain description of what a defect looks like on each. Backlight bleed checkPure black plus the judging notes: what's normal glow, what's a flaw, and how to photograph it fairly. Color LamaOur sibling instrument — point a camera at anything and get the color's name, HEX and RGB, all on-device.

Questions, answered straight

Does this make my display brighter?

No — a page can only ask every pixel for pure white. Hardware brightness lives with your OS: keyboard brightness keys on laptops, Control Center on iPhone, quick settings on Android. Max that out and white does the rest.

Can it find dead pixels for me?

No page can; the browser has no camera pointed at your own panel. Flat color makes defects visible and the guided test says what to look for — a dark dot on white, a glowing dot on black. You do the looking.

Why no true fullscreen on my iPhone?

Safari on iOS doesn't allow it for web pages, full stop. We fill the viewport instead, and if you want genuinely edge-to-edge color, add this site to your home screen — launched from there it runs without Safari's bars.

Will my screen dim mid-use?

Browsers with the Wake Lock API (Chrome, Edge, Safari 16.4 and newer) let us hold the screen on, and the status line under the tool confirms when that's active. Elsewhere we say so plainly and your usual auto-dim schedule applies.

What's stored or sent?

Nothing goes anywhere — there's no server behind this, no account, no ad script. The page caches itself on first visit so it opens offline afterward.

Can I send someone this exact color?

Copy the address — your color rides along in it (like ?c=00ff00). The share button does the copying for you.

Short reads from the notebook

Check a new monitor for dead pixels before the return window closesTen minutes with five colors, and what counts as "defective enough" to send it back. The white screen is secretly a lampWhy two-thirds of a million people a month search for a blank page — and what they do with it. Your phone as a video-call light: what worksPlacement, color temperature and the brightness ceiling nobody mentions.
Tap anywhere or press Esc to leave · ← → changes color