Why QR Code Size Matters
A QR code that's too small won't scan. A QR code that's too large wastes space. Getting the size right is crucial for a good user experience.
The general rule is simple: the scanning distance determines the minimum size.
The 10:1 Rule
A reliable guideline is the 10:1 ratio — your QR code should be at least 1/10th of the expected scanning distance.
Recommended Sizes by Use Case
Business Cards
- •Size: 1.5 cm × 1.5 cm (minimum)
- •Recommended: 2 cm × 2 cm
- •Users scan from about 15-20 cm away
Flyers & Brochures
- •Size: 2 cm × 2 cm (minimum)
- •Recommended: 2.5-3 cm × 2.5-3 cm
- •Leave white space (quiet zone) around the code
Table Tents & Menus
- •Size: 3 cm × 3 cm (minimum)
- •Recommended: 4 cm × 4 cm
- •Users scan from 30-50 cm away
Posters (A3/A2)
- •Size: 5 cm × 5 cm (minimum)
- •Recommended: 8-10 cm × 8-10 cm
- •Consider viewing distance of 1-2 meters
Billboards & Banners
- •Size: 30 cm × 30 cm (minimum)
- •Test from actual viewing distance before printing
Product Packaging
- •Size: Depends on package size
- •Small items: 1.5 cm × 1.5 cm
- •Boxes: 2-3 cm × 2-3 cm
- •Ensure sufficient contrast with background
Common Mistakes to Avoid
- 1.No quiet zone — Always leave white space around the QR code (at least 4 modules wide)
- 2.Low contrast — Black on white works best; avoid similar colors
- 3.Too much data — More data = more complex code = needs to be larger
- 4.Glossy surfaces — Can cause glare; use matte finish when possible
Pro Tips
- •Test before printing — Always scan your QR code at the expected distance
- •Use dynamic QR codes — If you need to change the destination later, you won't need to reprint
- •Consider your audience — Older phones may struggle with smaller codes
- •Add a call-to-action — "Scan for menu" works better than just a QR code
Quick Reference Card
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