BIGWORDS.PAGE
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
This site allows you to compose a giant message, which occupies the entire screen, directly in the browser, editing only the URL. (It has a visual, easier editor, too.) In addition to words, you can also put QR codes, regressive counters, images…