- Do QR Codes Expire?
Static QR codes never expire. Dynamic ones die when the provider's server stops redirecting. Here's how to tell which one you have.
- Static vs Dynamic QR Codes
One is permanent and free. The other is editable, trackable — and rented. The honest comparison.
- What Size Should a QR Code Be When Printed?
2 × 2 cm minimum for close-range scans, then one tenth of the scan distance. The rules, with numbers.
- QR Code Not Scanning? Causes and Fixes
The eight reasons QR codes fail, ordered by how often they actually happen.
- EAN-13 vs UPC-A: Which Barcode Do You Need?
They are the same symbology with one digit's difference. Where you sell decides which to print.
Guides.
Plain answers to the questions people actually have about QR codes and barcodes. Concrete numbers, standards cited, no upsell at the end.