FreeOnlineQR

Education guides

Practical, no-fluff guides for getting the most out of your QR codes and barcodes.

Jul 20

Dynamic QR Code Analytics: What You Can (and Can't) Track

"Track your QR code" gets thrown around a lot in marketing copy. Here's a realistic picture of what that data actually looks like, and what it can't tell you.

Education 8 min readRead
Jul 17

QR Code Error Correction Levels Explained

This is the reason a QR code with your logo in the center still scans perfectly — and why some codes tolerate damage far better than others.

Education 7 min readRead
Jul 15

How to Choose a QR Code Generator: A No-Nonsense Checklist

Most QR code generator comparisons are written by the generators themselves. Here's what to actually check, without the marketing spin.

Education 9 min readRead
Jul 8

Postal Barcodes: POSTNET, PLANET & Royal Mail Explained

Every letter that reaches your mailbox without a human reading the address by hand passed through a barcode along the way — here's what those actually encode.

Education 7 min readRead
Jul 6

Barcodes for Healthcare: HIBC, Pharmacode, and Medication Safety

Medication errors are exactly the kind of mistake barcoding was built to prevent — here's how healthcare-specific barcode standards actually work.

Education 8 min readRead
Jul 3

2D Barcodes Explained: PDF417, Data Matrix, Aztec Code, and MaxiCode

QR codes get all the attention, but they're just one member of a much bigger family of 2D barcodes — each built for a specific job most people never notice.

Education 9 min readRead
Jul 1

GS1 Barcodes Explained: GS1-128, GTIN, and Supply Chain Identification

If you've ever wondered why every product in a modern supply chain seems to trace back to the same numbering system, this is why — and how to generate a compliant code yourself.

Education 9 min readRead
Jun 22

Barcode vs QR Code: Which Should You Use in 2026?

They both do the same basic job — encode information for a fast scan — but they're built for genuinely different problems. Here's how to pick correctly the first time.

Education 9 min readRead