← All guidesQR color, contrast & quiet zone: the print rules that actually matter
Why quiet zone is non-negotiable, how to choose colors that scan, and what backgrounds (patterns, gradients) break QR detection.
If you want reliable scans, treat QR design like typography: contrast and spacing matter more than style.
Quiet zone (margin) rule
Always keep a blank border around the QR code. Minimum is 4 modules (the small squares) on all sides. Cropping the margin is the #1 reason printed QRs fail.
Contrast rule
- Best: dark QR on white/light background.
- Avoid: light QR on dark background (some scanners still struggle).
- Avoid: low contrast (gray-on-gray), metallic ink, glossy reflections.
Background rule
- Do not place QR on busy patterns, photos, gradients, or textured paper.
- If you must, put a solid light “plate” behind it (including the quiet zone).
Logos and fancy shapes?
Logos in the center can work, but they reduce effective error tolerance. If you add a logo later, print bigger and test more devices.
Fast checklist
- Dark on light
- Keep quiet zone
- Use SVG for print
- Test iPhone + Android
Exact mm/in recommendations, quiet zone rules, and print tips so your QR scans fast on real phones from typical distances.
When SVG is mandatory (printing), when PNG is fine (screens), and how resizing affects scan reliability.
Best size for table tents and wall posters, avoiding glare, and a practical checklist for menus that scan instantly in real lighting.
Pick the right error correction level for print/screens/logos. Learn the trade-off: higher correction = denser QR = needs larger print.
How big should a QR be on posters and signs? Use a simple distance→size table, plus placement and glare tips for real-world scanning.
Recommendations for the optimal QR code size for printing, especially for business cards and other small print materials.
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