•8 min read
How QR Codes Work: A Technical Guide
Anatomy of a QR Code
QR Codes (Quick Response Codes) are 2D matrix barcodes defined by the ISO/IEC 18004 standard. They can store up to 4,296 alphanumeric characters.
The Finder Patterns
The three large squares in the corners allow 360-degree scanning orientation.
High-Fidelity QR Generation
Generate ISO-compliant QR codes for URLs, WiFi, and vCards instantly.
Open QR Code StudioError Correction
QR codes use Reed-Solomon error correction, allowing them to remain readable even if up to 30% of the code is damaged.
QR Code Studio
Create ISO-compliant QR codes with advanced error correction on Karuvigal.
Open Karuvigal