Guides
Printing codes that actually scan
Each guide answers one question in its first paragraph, then shows the working. Written for someone about to spend money at a print shop.
What do these guides cover?
These guides cover printing QR codes that actually scan: how big to print one for the distance people stand at, why a code that works in the studio fails in a dim restaurant, and what a dynamic code buys you over a static one. Each answers its question in the first paragraph.
Printing
QR code not scanning
The six causes, ordered by how often each one turns out to be the real problem. Most are print problems rather than code problems.
Choosing
Dynamic vs static QR codes
What each one costs you, why a short link makes a coarser and more scannable pattern, and when the static code is the right answer.