QR code guides
Four explainers for when the generator has done its job and you want to know what actually happened. No marketing, no app downloads — just how the format works and where it breaks.
How QR codes actually work
Modules, finder patterns, and Reed–Solomon error correction — the anatomy of a QR code, explained from the pixel up.
Error correction levels explained: L, M, Q, H
What each level actually tolerates, how much bigger the code gets, and how to pick the right one for print vs. screen.
How to share Wi‑Fi with a QR code
The WIFI: payload format, what phones do when they scan it, and the security tradeoffs worth knowing before you print one.
QR code design tips that still scan
Colors, contrast, logos, and quiet zones — how far you can push the look of a code before a scanner gives up on it.
