QR code basics
10 guides on qr code basics with Scan QR Code Master.
What is a QR code and how does it work?
A plain-English explainer of what QR codes are, how they store information, and what they're used for.
How to share and print a QR code
Once you've made a QR code, here's how to share it digitally and print it so it always scans cleanly.
Static vs dynamic QR codes: what's the difference?
Static and dynamic QR codes look identical but work differently. Here's which one to use and why.
Are QR codes safe? How to scan safely
QR codes are safe to scan when you check where they lead. Here's how to spot a malicious code and scan with confidence.
How big should a QR code be?
Print a QR code too small and it won't scan. Here's a simple rule for sizing a code for cards, flyers, posters, and billboards.
How QR code error correction works
Why a scuffed or partly-covered QR code still scans — a plain-English look at QR error correction levels.
How to change the color of a QR code (and keep it scannable)
A colored QR code can match your brand — if you keep enough contrast. Here's how to color a code without breaking it.
QR code vs barcode: what's the difference?
QR codes and barcodes both store data a scanner reads, but they work differently. Here's how they compare.
How to add a QR code to your resume
A QR code on your resume links a recruiter straight to your portfolio or LinkedIn. Here's how to add one well.
How to test a QR code before printing it
A five-minute check that saves a reprint. Here's how to test a QR code before you commit it to paper.