How to use
- Type your message in Text, or tap one of the examples below it.
- Pick colours, set speed and text size, switch on Blink if you like, and check the Preview.
- Press Play full screen and hold the phone sideways. Tap the screen to bring up the Exit button.
- To give a friend the same sign, press Copy share link and send it to them.
Options explained
- Colours
- Eight common LED colour pairs (red on black, green on black, black on yellow and more), or choose the text and background colours yourself. Bright text on black stands out best at night.
- Speed
- Levels 1 to 10, scaled to the screen height so it looks the same on any phone in either orientation. At level 1 the text moves about one screen height every 3 seconds.
- Text size
- Letter height as 30% to 95% of the screen height.
- Direction
- Scroll left, scroll right, or stay still and centred. When still, long text shrinks to fit the screen.
- LED dot effect
- Lays a grid of dots over the text so it looks like an LED board. Turn it off for smooth lettering.
Ideas
| Occasion | Suggested settings |
|---|---|
| Airport or station pickup | The person’s name, yellow or white on black, speed 3–4 so it’s readable from a distance |
| Concert or match | The artist’s or team’s name, red or pink on black, Blink and LED dots on, speed 5–6 |
| Car rear window | “THANK YOU” or “NEW DRIVER”, still or slow — don’t operate your phone while driving |
| Birthday or a surprise | “HAPPY BIRTHDAY” or “I LOVE YOU” in your favourite colours; send the share link so friends can hold one too |
Hold several phones side by side with the same speed and press play together, and they look like one longer sign.
Frequently asked questions
Does it work with the phone held upright?
Yes. When the phone is upright the text turns 90° and runs along the long edge, so it reads correctly once you hold the phone sideways. On Android the page also tries to lock landscape in full screen.
Will the screen turn off while it plays?
In full screen the page asks the browser to keep the screen on, which recent Chrome, Safari and Edge support. If you switch to another app and back, it asks again.
Why can I still see browser bars on an iPhone?
iPhone does not allow page elements to go full screen. In Safari the status bar takes on the background colour; Chrome, Edge and other browsers on iPhone keep their own toolbars, so open the page in Safari.
What is in the share link?
The text and settings are stored after the # in the link, so whoever opens it gets the same sign. The content lives only in the link; the site does not save it.
Can it show emoji?
Yes — emoji, any language and numbers all work. How they look depends on your phone's built-in fonts.
Privacy
This tool runs entirely in your browser. Your files and text are processed on your device and are never uploaded to our servers.