How does a QR code work?

Short answer

A QR code is a square barcode that stores information, like a web address. When you scan it with your phone camera, it reads that information and opens it for you, such as your wedding website or RSVP page.

A QR code works like a printed link. It is a square pattern of black and white squares that encodes text, usually a web address. When you point your phone camera at it, the camera recognises the pattern and offers to open the link in your browser. You do not need a special app on most modern phones; the camera app does the work.

For a wedding, you can put a QR code on your save the date cards, invitations, order of service booklets, or welcome boards. Guests scan it and land straight on your wedding website, RSVP form, or gift list. It saves them typing a long web address and reduces mistakes.

You can generate a QR code for free using many online tools. The code itself does not cost anything. The cost comes from what you print it on, like your stationery or signs. You can also display it on a screen at the wedding, for example on a welcome board, so guests can scan it to see the day's schedule or leave a message.

One thing to check: make sure the QR code links to a page that works well on a phone. Test it yourself before printing. Also, keep the code large enough to scan easily, at least a few centimetres across, and avoid placing it near folds or creases.