Guides
QR Code Security: How Quishing Works and How to Stay Safe
Malicious QR codes are a real and growing problem. What the attacks look like, and what both scanners and publishers should do.
CQRG Team 3 min
9 articles
QR Code Guides
The long-form end of this blog. These are the articles to read once, properly, before you commit a code to print — the ones covering how the format actually behaves rather than which button to press.
They lean on specifics: the module density a phone camera can still resolve, why raising error correction makes a code harder to scan rather than easier, what a scan log can and cannot tell you. If you are deciding something you cannot undo once the artwork ships, start here.
Guides
QR Code Best Practices: Size, Contrast & Error Correction
Most QR scanning failures come down to three fixable things: size, contrast, and error correction level. Here is what actually matters.
CQRG Team 3 min
Guides
How to Design a QR Code That Matches Your Brand
A default black-and-white QR code works, but a branded one gets scanned more. Here is how to customize yours without breaking it.
CQRG Team 3 min
Guides
Bulk QR Code Generation: Make 100 Codes From One Spreadsheet
How to plan a spreadsheet, turn it into up to 100 QR codes in one pass, and check the batch before it goes to print, so every table, tag, and badge scans.
CQRG Team 8 min
Guides
How to Scan a QR Code on iPhone and Android (No App Needed)
Every iPhone since 2017 and most Android phones since 2018 can scan a QR code with nothing but the built-in Camera app. Here is exactly how, on both platforms, and what to do when it does not work.
CQRG Team 3 min
Guides
QR Code vs Barcode: What Is Actually Different
A barcode and a QR code look like cousins, but they solve different problems. The real differences are capacity, scan direction, and error correction — here is what each actually means in practice.
CQRG Team 4 min
Guides
Static vs Dynamic QR Codes: Which One Do You Need?
Static codes encode the destination directly; dynamic codes point at a redirect you control. The difference matters most after printing.
CQRG Team 2 min
Guides
QR Code Analytics: The Metrics That Actually Matter
Scan counts alone tell you very little. Here is how to read QR analytics in a way that changes decisions.
CQRG Team 3 min
Guides
Why Your QR Code Is Not Scanning: 9 Causes and Fixes
A checklist for diagnosing a QR code that will not scan, ordered from the most common cause to the most obscure.
CQRG Team 3 min