How they work. Where they came from. How to use them well.
A clear look at how QR codes store data in a grid, why they survive damage, and the real difference between static and dynamic codes.
What a WiFi QR code actually stores, how to build one that works on the first scan, and where to place it.
How a Denso engineer, a game of Go, and an unenforced patent turned a factory tracking tool into the most-scanned code on earth.
We believe creating a QR code shouldn't be complicated. Sometimes you just want to share a link, connect someone to your WiFi, or send your contact details—and you want it done in seconds.
That's why we built QRExpress: a free code generator with no account to create, no paywalls and no waiting around. Just create it for a website, WiFi network, contact card, or anything else you want to share, customize it however you like, and download it instantly as a high-resolution file.
Your privacy matters. Everything runs locally in your browser, which means the QR codes you create are never uploaded or stored anywhere.
This blog is here for anyone who's curious about what happens behind the scenes. We share practical tips, explain how codes work, and try help you get the most out of it. But if you're just here to make a QR code, you're only one click away.