What is a URL QR code?
A URL QR code encodes a web address as-is. A phone camera recognises the http or https prefix, shows the domain it is about to open and hands it to the browser. It is by far the most common kind of QR code: restaurant menus, packaging, posters, business cards, event tickets and parcel labels all use it.
Static, not dynamic
The codes here are static: the address is inside the printed symbol. Nothing is tracked, nothing expires, and there is no account to keep alive - but the destination also cannot be changed after printing. If you expect the target to move, encode a URL you control and put a redirect behind it, rather than paying for a dynamic QR service.
Practical advice
- Encode the full address including https://. A code containing only example.com is ambiguous and some scanners will treat it as plain text.
- Shorter is denser. Every character adds modules, so a long tracking query string produces a busier code that needs a bigger print size.
- Test the printed size on the worst phone you can find, not the newest one, and from the distance people will actually stand at.
- Keep a quiet margin around the code. The white border is part of the specification, not decoration - the download files already include it.