mailto:, tel: and plain text work too. Without a prefix, https:// is added.
Higher means it survives scratches, rain and dirt.
It stays on your computer: the image is never uploaded anywhere.
Minimum recommended print size. Rule of thumb: the side of the code is about one tenth of the reading distance.
For signage and large print use the SVG: it stays sharp at any size.
Why it never expires
Most online generators create a short link on their own domain. If that service shuts down or moves behind a paywall, every printed code stops working. Here the final address is written inside the code itself: there is no middleman.
Everything in the browser
Addresses and logos never leave your computer. No server, no account, no tracking. The page even works offline after the first load.
Built for print
Vector SVG for signage and site banners, PNG up to 4096 px, a correct quiet zone and an automatic contrast check before the file reaches the printer.