QR Code Size Guide
The right QR size depends on scan distance, print quality, contrast, and how much data is inside the code. Larger is safer, especially for posters and table signs.
| Print use | Starting size | Notes |
|---|---|---|
| Business card | 0.8 in / 20 mm | Use a short URL and keep margin around the code. |
| Flyer | 1.2 in / 30 mm | Good for hand-held scanning. |
| Restaurant table sign | 1.6 in / 40 mm | Test under room lighting and avoid glare. |
| Poster | 4 in / 100 mm | Increase size as viewing distance grows. |
Quick rule
Start with a QR width around one-tenth of the expected scanning distance, then test the final printed material.