Neon Buzzline / Concert sign
Concert sign
Hold your phone up and be seen. Type a message and it fills the screen in the biggest letters that fit, ready for the crowd, the stage or the arrivals hall.
SING ITWITH US!
Make it readable from the back
- Fewer words, bigger letters. The sign tries every way of splitting your message into lines and keeps the one with the largest letters, so three short words beat one long sentence.
- Pick strong contrast. Black on yellow and white on black carry furthest. Coloured letters on black look great close up but lose some reach.
- Turn the brightness up and hold the phone still at head height. Landscape suits one or two words; upright suits three or four short lines.
In full screen the page keeps the screen awake where the browser allows it, and lets go when you exit.
About the flash
The flash is off until you choose it, read the warning and confirm. It only runs in the full-screen show, never more than twice a second, and not at all when your device asks for reduced motion.
Source
W3C, Understanding Success Criterion 2.3.1: Three Flashes or Below Threshold (WCAG 2.2).
Questions
How big do the letters get?
As big as your screen allows: the sign measures your message in the chosen lettering and sizes it to fill the width or the height, whichever runs out first, with a small margin so nothing touches the edge.
Is the flash safe?
It stays under the three-flashes-a-second threshold that accessibility guidelines use, but no flashing light is safe for everyone. Never flash it at someone who has not agreed to it, and use Slow pulse if you are unsure.
Can I use emoji?
Yes. Emoji come from your phone's own emoji font and grow with the text. They count towards the line width, so a row of hearts makes the letters a little smaller.