The Ultimate Guide to QR Codes
Master the art of connecting the physical and digital worlds. Learn how to create, customize, and deploy QR codes effectively.
1. The Basics
QR (Quick Response) codes are two-dimensional barcodes that can store much more data than standard barcodes. They were invented in 1994 by Denso Wave and have since become the standard for mobile connectivity.
Static QR Codes
Data is encoded directly into the pattern. Once printed, it cannot be changed. Good for permanent links like Wi-Fi credentials or vCards.
Dynamic QR Codes
Encodes a short redirect URL. You can change the destination anytime and track scan analytics. Essential for marketing and business.
2. Design Best Practices
- 01
Maintain Contrast
Always ensure high contrast between the foreground (code) and background. Dark code on light background is the safest choice.
- 02
Don't Over-Customize
While logos and colors are great, modifying the "eyes" (corner markers) too much can make the code unreadable.
- 03
Size Matters
Minimum size should be 2x2 cm (0.8x0.8 inches). For scanning from a distance, the ratio is 10:1 (distance:size).
3. Printing & Deployment
Always Test Before Printing!
Print a single sample and test it with multiple devices (iOS and Android) and in different lighting conditions before ordering a bulk print run.
When exporting for print, always use vector formats like SVG or EPS (if available). This ensures your QR code remains crisp at any size, from a business card to a billboard.