How small can a QR code be?
· 9 min read
The minimum QR code size for printing depends on scan distance, data length, and error correction. Use the 10:1 rule and this print sizing table to get it right.
Articles
QR code guides, design tips, and use cases from the QRlfy team.
How to track QR code scans (and what the data tells you)
· 6 min read
Dynamic QR codes log every scan: time, location, device. Learn how QR code tracking works, what the numbers mean, and how to read your scan analytics.
Static vs. dynamic QR codes: when you need each one
· 6 min read
Static codes lock content permanently. Dynamic codes let you change destinations, track scans, and survive plan changes. Here's when each type is the right pick.
Do QR codes expire? What actually kills a code after print
· 6 min read
Static QR codes never expire. Dynamic ones can stop when a service deactivates them. Here's what actually kills a code after print and how to prevent it.
QR code colors and contrast: what scans and what doesn't
· 6 min read
Which QR code colors actually scan? The rules for background color, contrast, inverted codes, and the red-ink trap, drawn from the QR spec and scanner source code.
Why your QR code won't scan (and how to fix it)
· 8 min read
The five reasons QR codes fail to scan: low contrast, wrong size, logo coverage, physical damage, and dead links. Plus a pre-print test checklist.
How big can a logo be on a QR code before it stops scanning?
· 4 min read
Standard logo QR codes cap out around 20-25% coverage. Here's the error-correction math behind that ceiling, and how whole-code QR generation removes it.