Learn how to print a QR code that still scans: file formats, resolution, print size by viewing distance, contrast, quiet zone, materials and a testing routine before mass printing.
A repeatable protocol for testing a QR code before a print run — device differences, low light, angle, curvature, proof printing and damaged-code recovery.
Why printed QR codes fail and how to fix it: DPI, module size, CMYK rich black, ink spread, laminate glare and a proof-testing protocol that catches problems before the print run.
Learn the exact QR code size for business cards, posters, packaging and billboards. Simple distance rules, print examples, common mistakes and quick tests.