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Short, specific guides to the things that decide whether a printed QR Code works. Formulas are shown rather than summarised, so you can check them against your own case.
8 min read
Static vs dynamic QR Codes
What the difference actually is, why “free” dynamic codes so often stop working, and how to get editable destinations without handing anyone control of your print run.
10 min read
How to design a QR Code that actually scans
Contrast, colour, logos, quiet zone and surface. The design decisions that break codes, with the arithmetic behind each rule so you can judge the edge cases yourself.
Looking for the numbers rather than the prose?
The print size checker publishes the whole sizing model and works it out for your exact content, error-correction level and print method.