QR Code Size
Minimum size for reliable scanning
Rule of thumb: at least 2 × 2 cm (about 0.8 × 0.8 in), or roughly one-tenth of the scanning distance. On tables, 3–5 cm (1.2–2 in) is comfortable.
Minimum size for reliable scanning
Rule of thumb: at least 2 × 2 cm (about 0.8 × 0.8 in), or roughly one-tenth of the scanning distance. On tables, 3–5 cm (1.2–2 in) is comfortable.