GUIDES
Practical QR & Barcode Guides
Learn how these formats work, how to make them reliable and how to choose the right tool for your use case.
i
How QR Codes Work
A plain-English explanation of QR data, error correction and scanning.
Read guide → iQR Code Best Practices
How to choose size, contrast, margin and placement.
Read guide → iUsing QR Codes for Business
Practical examples for menus, events, contact details and campaigns.
Read guide → iBarcode Basics
A beginner's guide to EAN, UPC, Code 128 and Code 39.
Read guide → iQR Codes vs Barcodes
When a two-dimensional QR code makes more sense than a traditional barcode.
Read guide → iQR Codes and Privacy
What a static QR code contains and what happens after scanning.
Read guide →