Arrivals and stations
A name held up in a crowd. Two short lines, bold sans, yellow on black, brightness up โ and the screen kept awake so it is still lit when they walk out.
Text Tool
Full Screen Text: Turn Your Screen Into a Sign
Type a message and it fills the display, sized automatically however long it is, in any lettering style โ on a screen that stays awake while you hold it up. Leave it empty for a plain white, black or coloured screen.
๐ช๐๐๐๐ข๐ ๐ ๐ฆ๐๐ฅ๐๐
A line break starts a new line. Sized automatically to fill the screen: currently 91px across 2 lines.
Lettering
Colour
Movement
The screen is kept awake while full screen, where the browser allows it.
Auto
Fits any length
20
Lettering styles
8
Colours
100%
Free
How to Use It
- 1
Type the message
A line break starts a new line. Leave it empty and you get a plain colour screen instead.
- 2
Pick lettering and colour
Any of the Unicode styles, and a colour pairing chosen for how far it reads.
- 3
Go full screen
The message fills the display and the screen is kept awake while it is up.
Why It Sizes Itself
A sign has one job: to be read from wherever the reader is standing. That means the letters should be as large as the screen allows โ and how large that is depends on the message. A single word can be enormous. A sentence cannot.
So there is no size control here. The tool measures the screen it is on and the message you typed, and picks the largest size that still fits the whole thing. WELCOME comes out around 71px on an upright phone and about 265px on a laptop; add a second line and both drop to keep it all on screen.
Line breaks are yours to place. Two short lines usually read further than one long one, because the letters can be bigger โ WELCOME / SARAH beats WELCOME SARAH on the same screen every time.
What Reads Furthest
Two choices decide whether a sign works across a room, and neither is the size.
Contrast comes first. Yellow on black is the pairing that holds up best โ high contrast with a warm hue, which is why it is used on road and exit signage. White on black comes next, then black on white. Pairs that sit close together in brightness, like red on green, are the first to fail as light drops or the viewer moves off to one side.
Letterform comes second. The 20 styles here are all available for a sign, but they are not equally readable at distance. A bold sans is the safe choice for anything that must be understood quickly. Script and gothic are beautiful and slow โ fine for a short word someone is standing next to, poor for a name being scanned in an arrivals crowd. If you are unsure, the compatibility guide covers how each style behaves, and the accessibility notes cover what styled letters cost a screen reader.
Keeping the Screen Awake
The failure everyone meets with a phone held up as a sign is the screen dimming after thirty seconds, usually at the moment someone finally looks.
Going full screen here asks the browser to hold the display awake, and the tool tells you on screen whether the request was granted. Some browsers do not offer it at all; in that case the page says so rather than letting you find out in the arrivals hall. The fallback is the usual one โ raise the screen timeout in your settings before you set off, and turn the brightness up.
The Blank Screen, and What It Is For
Leave the message empty and you get a plain, full-screen colour with nothing on it. That is a tool in its own right, and the colours here are chosen for what each one is actually used for:
| Colour | What a blank screen of it is for |
|---|---|
| White | Monitor and dead-pixel checks, fill light for a video call |
| Black | Backlight bleed, dust on the panel, night reading |
| Red | Subpixel checks, darkroom-style light |
| Green | Subpixel checks, a quick chroma backdrop |
| Blue | Subpixel checks, colour-cast comparison |
| Amber | Warm light, easier on the eyes at night |
| Ink on cream | Low-glare reading, paper-like backdrop |
| Yellow on black | The most legible pairing at a distance |
A word of honesty about dead-pixel testing: a blank screen shows you where to look, it does not diagnose anything. A dot that stays black on every colour is a dead subpixel; one that stays lit is stuck. Neither is fixed by software, whatever a page promises, and a panel under warranty is worth a claim rather than a plugin.
Where People Hold One Up
A stall, desk or door
โBack in 10 minโ on a propped-up tablet says more than a sticky note, and changes in two seconds.
Events and queues
An arrow and a word. Scroll mode if the message is a sentence rather than a sign.
Talks and streams
A second screen showing a title card, a countdown message, or โback shortlyโ during a break.
Seeing a style at real size
Every lettering style on this site, filling a screen, is a better look at it than a preview box in a list.
A blank screen
Empty message, pick a colour: checking a monitor, lighting a face on a call, or a plain light in a dark room.
One thing to keep in mind wherever the sign goes: styled Unicode letters are characters, not formatting, so they copy anywhere โ but they are not searchable and a screen reader announces them character by character. For a sign that nobody needs to search, that costs nothing. For anything that also has to work as text, keep a plain version.
Frequently Asked Questions
How do I make text fill the whole screen?
Type it and press Go full screen โ there is no size to set. The tool measures the screen and the message and works out the largest size that still fits, so a short word and a long sentence both fill the display. The word "WELCOME" comes out around 71px on a phone held upright and about 265px on a laptop.
Can I get a plain white screen?
Yes โ leave the message empty and pick White. That gives a full white display with nothing on it, which is what people use for checking a monitor for dead pixels or dust, and as a soft light for a video call. Black, red, green, blue and amber are there for the same reasons; red, green and blue are the useful ones for looking at individual subpixels.
Will my screen dim while I am holding it up?
Not while the browser allows it to be prevented. Going full screen asks the browser to keep the display awake, and the tool says on screen whether that request was granted. Where it is refused โ some browsers do not offer it at all โ the page tells you rather than letting the sign go dark, and the fix is to raise your screen timeout before you set off.
What colour is easiest to read from a distance?
Yellow on black. High contrast plus a warm hue holds up better in poor light and at an angle than black on white does, which is why road and exit signage uses it. White on black is next, then black on white. Colour pairs that are close in brightness โ red on green, blue on black โ are the ones that fail first as the room darkens or the viewer moves further away.
Can I use a fancy font on the sign?
Yes, 20 of them โ bold, script, gothic, double-struck, monospace and the rest. They are Unicode characters rather than a font file, so they render without installing anything. One caution: decorative letterforms are harder to read at a distance, which is the whole point of a sign. Keep script and gothic for something short and close, and use a bold sans for anything that has to be read across a room.
Does the message scroll if it is too long?
It can. Fit to screen keeps the whole message visible at the largest size that fits. Scroll moves it across instead, which suits a sentence too long to read at a glance. Blink fades it in and out to catch an eye in a crowd. If your system is set to reduce motion, scroll and blink hold still โ a moving sign is exactly what that setting is meant to stop.
Is anything I type sent anywhere?
No. The message never leaves your browser; nothing is uploaded, stored or logged.
Is it free?
Yes, with no sign-up and nothing to install.
Want the message as a file instead?
This fills a screen. If you need the same words as an image to print or send, the image generator renders them into a PNG, and the repeater writes a line out as many times as you like.