QR Code Guides

Straightforward answers to real QR code questions — sizing, scanning problems, security and practical use cases. No fluff.

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Do QR codes expire?
Why static codes last forever and which ones quietly die.

Static vs dynamic
Which type you actually need, and what each one costs.

Error correction levels
L, M, Q, H explained — and when to use each.

Printing & troubleshooting

What size for printing?
The 2cm floor, the distance rule, and sizes by use case.

Code not scanning?
Nine checks, ordered most to least common.

Are QR codes safe?
How quishing works and how to scan and generate safely.

Real-world use cases

On business cards
vCard codes, sizing and placement that actually scans.

Restaurant menus
Set up a menu code that never expires and beats glare.

Guest WiFi codes
Let guests join in one scan, with no password read-outs.

History of the QR code
From 1994 car parts to billions of scans a year.

Ready to make one? It's free, needs no sign-up, and never expires.

Open the generator