Short, practical guides on barcode standards, QR code design and printing labels that actually scan — written alongside the MarkingBear generator.
Printing
Quiet zones, DPI, PNG versus SVG and PDF, and sticker grid alignment — everything needed to print barcode labels on A4 sheets or a thermal printer and have them scan first time.
August 15, 2026 · 3 min read
Privacy & workflow
How client-side JavaScript generation works, and how to turn a CSV of 100+ product SKUs into barcodes or QR codes without your price list, customer links or internal codes ever leaving your device.
August 14, 2026 · 2 min read
Retail standards
EAN-13 and UPC-A explained side by side: 13 digits versus 12, European and global versus US and Canadian retail, GS1 prefixes, and how to choose the right barcode for your product.
August 13, 2026 · 2 min read
QR design
A practical branding guide for cafés and restaurants: choosing QR frames, exporting vector SVG for sharp printing, and keeping contrast high enough to scan on mugs, tables and menus.
August 12, 2026 · 3 min read
Barcode basics
A plain-English guide to the Modulo-10 check digit used by EAN-13, UPC-A and ITF-14 barcodes: the 1/3 weighting rule, worked examples, and why a wrong last digit fails at the till.
August 11, 2026 · 3 min read