Notes on QR codes,
analytics, and the people who print them.
Field notes from the team building DuoQR, with practical product guides and engineering deep-dives.
How to Create a QR Code in 30 Seconds
Create your first QR code quickly without skipping the checks that keep it scannable, editable, and useful after it goes live.
All articles
How to Create a Custom QR Code Without Breaking Scans
Create a custom QR code with brand colors, a logo, and a clear frame while keeping the code reliable enough for print, packaging, signage, and campaigns.
Do QR Codes Expire? Static, Dynamic, and Permanent QR Codes Explained
Learn when QR codes keep working, why some dynamic codes stop resolving, and how to create a QR code that is as permanent as the surface you print it on.
High-Resolution QR Codes for Print: SVG, PNG, and DPI
Create a high resolution QR code for print by choosing the right file format, sizing PNG exports correctly, preserving the quiet zone, and testing the final artwork before production.
How to Create a Dynamic QR Code
Create a dynamic QR code that uses an editable short link, works in print, and can be updated or measured after the file is shared.
How to create a QR code for a website
A practical guide to turning a website, landing page, or campaign URL into a QR code you can test, print, track, and update later.
How to Put a QR Code on a Business Card
Create a business card QR code that opens the right contact page, scans at card size, and can be updated after the cards are printed.
QR Code With Logo: What Keeps It Scannable?
Add a logo to a QR code without making the final file fragile. Learn where the logo can sit, what to test, and when to make the code dynamic before printing.
Trackable QR Codes: What You Can Measure From a Scan
Learn what a trackable QR code generator can measure, what it cannot prove, and how to set up QR campaigns so scan data is useful after launch.
vCard QR Code: Create an Editable Digital Business Card
Choose the right contact QR workflow: a vCard download, an editable contact page, or a richer digital business card that can change after the card is printed.