Retail
7 min readThe GS1 barcode compliance checklist for retail suppliers
Quiet zones, magnification, bar height and check digits — the five things retail buyers actually reject artwork for.
June 18, 2026
Insights
Field notes on barcode standards, retail compliance and QR design.
Publishing
6 min readISBN barcodes for independent publishers, explained
How ISBN-13, Bookland EAN and the five-digit price add-on fit together — and when you actually need each one.
May 2, 2026
Design
5 min readDesigning QR codes that still scan
Logos, gradients and rounded modules are safe — if you understand error correction and contrast budgets.
March 27, 2026
Standards
4 min readChoosing between Code 128 and Code 39
Two workhorse linear symbologies, one clear default — and a few legacy cases where the older one still wins.
January 14, 2026