QR Codes
QR tools create and read the codes that bridge a physical surface and a phone: a link, a piece of text, an email draft, a Wi-Fi login, or a scan check. The code is only a container; the destination and the context do the work.
Test every code on at least two phones before printing it. Check the size, contrast, quiet zone, and what happens after the scan. A code that opens the right page on your desk can still fail on a poster behind glass.
- Text QR Code Put any short piece of text into a scannable code. Open tool
- Email QR Code Make a code that opens a new message to an address. Open tool
Common questions
Do QR codes expire?
A static QR code contains the destination itself, so it does not expire. A dynamic QR code points at a redirect service, and the service controls whether the link keeps working. If a code must stay useful for years, understand which kind you are printing.
How big should a printed QR code be?
There is no single size. A code scanned from a phone held close can be small, while a poster read from several metres needs to be much larger. Start with a code at least a few centimetres square, keep a clear margin around it, and test from the real viewing distance.
Are QR codes safe to scan?
A QR code is just a link in another form. Check the destination before you enter a password, payment detail, or personal information. Be wary of codes stuck over an existing sign, and use a scanner that shows the URL before it opens the page.