3-Step Logo QR Code
- 11. Upload logo → [UPLOAD]
- 22. Auto-position + resize → [PREVIEW]
- 33. Export SVG/PNG → [DOWNLOAD]
12 Design Rules
- 11. Logo <20% of QR area
- 22. High contrast logo
- 33. Test scan every version
- 44. Remove logo from center (if needed)
- 55. Use error correction Level H
