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QR Code Technical Guides

Technical deep dives into QR code specifications, printing requirements, error correction, size guides and developer resources.

9 guides
Barcode types explained: several linear barcode formats side by side on a product box, a shipping carton and an asset tag
QR Code Technical Guides

Barcode Types Explained: Code 128 vs EAN-13 vs UPC-A vs Code 39 (and Which to Use)

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A QR code being checked before printing with a magnifier over its quiet zone, a green pass checkmark and a scannability quality gauge
QR Code Technical Guides

QR Code Checker: Test If Your QR Code Will Scan Before You Print

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Developer terminal showing a QR code API request and the generated code output
QR Code Technical Guides

QR Code API: How to Generate QR Codes Programmatically

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Four QR code file format icons side by side — PNG, SVG, PDF, and EPS — with print and screen use cases
QR Code Technical Guides

QR Code File Formats Explained: PNG, SVG, PDF, and EPS

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Spreadsheet rows of URLs being converted into a grid of QR codes by a bulk QR code generator workflow
QR Code Technical Guides

How to Create QR Codes in Bulk from a Spreadsheet or CSV

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Print shop producing materials that print QR codes across posters, cards, and stickers
QR Code Technical Guides

How to Print QR Codes: Complete Guide for Every Material

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Damaged code still scanning thanks to QR code error correction rebuilding lost modules
QR Code Technical Guides

QR Code Error Correction: How Damaged Codes Still Scan

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Person troubleshooting a QR code not working by scanning a printed flyer with a smartphone
QR Code Technical Guides

QR Code Not Working? 10 Common Causes and How to Fix Each One

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The 10:1 distance rule for QR code size, with codes growing as scan distance increases
QR Code Technical Guides

QR Code Size Guide: Minimum Size, Printing Specs, and the 10:1 Rule

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