📘 Technical Guide & Documentation
What is a QR Code and How Does It Work?
A QR code (Quick Response code) is a two-dimensional matrix barcode designed for rapid optical scanning by mobile devices and digital readers. Originally engineered by Denso Wave, it has become the global standard for instantly bridging offline physical media with interactive digital experiences.
Reed-Solomon Error Correction Levels
This generator lets you adjust the mathematical redundancy of the matrix to maintain scan reliability even if the physical media is partially obscured or damaged:
- Level L (Low): Restores up to 7% of lost data. Best for clean digital screen displays.
- Level M (Medium): Restores up to 15%. Default balanced setting for general marketing.
- Level Q (Quartile): Restores up to 25%. Ideal for packaging and printed brochures.
- Level H (High): Restores up to 30%. Maximum resilience, essential for outdoor signage.
Best Practices for High-Conversion QR Codes
- High Color Contrast: Always place darker foreground modules over a light background to guarantee rapid camera sensor recognition.
- Preserve Quiet Zones: Ensure a border margin of at least 4 module widths around the outer edges.
- Vector Scaling (SVG): Download SVG vector format when sending designs to professional offset printing or large format banners.
