Size and distance
There is no universal minimum. Longer distance and denser data require a larger physical code.
Contrast and quiet zone
Dark modules on a light background are safest. Keep all text, frames and artwork outside the clear border around the QR.
File and material
Use SVG for large print. Glossy, curved, textured or reflective surfaces can make camera focus harder.
Test plan
Print a full-size proof and test multiple iOS and Android devices under realistic lighting and distance. Verify the destination too.
Frequently Asked Questions
What is the minimum print size?
It depends on density, quality and distance; a real proof test is essential.
Can I print a JPG?
Yes, but compression can damage edges. PNG and especially SVG are safer.
Can QR codes use color?
Yes, as long as strong brightness contrast is maintained.
All features are free
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