QR code guides
Plain answers to the questions people ask before they print a code: how it works, how big to make it, whether it is safe, and what to do when it will not scan.
Each guide is short and practical. If you would rather see where a code works in your own business, the use-case pages cover that.
Static vs dynamic QR codesWhat the difference is, and which one you need. QR code size guideMinimum print size, scanning distance, and the blank border. Are QR codes safe?How to check where a code goes and spot a tampered one. QR code not scanning?Nine common reasons a printed code won't scan, and how to fix each.Looking for ideas for your own business? See the use cases.