What is a QR Code? (Beginner Guide)
Definition
QR stands for Quick Response. It is a 2-dimensional matrix barcode invented in 1994 by Denso Wave (Masahiro Hara) in Japan. Unlike standard barcodes (1D) that hold ~20 digits, a QR code can hold up to 7,089 numeric characters.
Anatomy of a Code
The three large squares in the corners. They tell the scanner "This is a QR code" and "This is up".
Smaller squares that help scanners decode even if the surface is curved.
The white border around the edge.
A QR code can still be scanned even if 30% of it is damaged or covered!
Why are they popular now?
Native Camera Support
Before 2017, you needed a special app. Now, every iPhone and Android camera scans them automatically. This lowered the barrier to entry to zero, making them the global standard for Offline-to-Online interaction.
Create dynamic QR codes in seconds
No signup required for static codes. Join thousands of creators making the physical world clickable.