Low contrast
Light foreground colors, busy backgrounds, and transparent designs can make QR codes harder to scan.
Tiny print size
Small QR codes can fail when the encoded content is long or print quality is low.
No quiet zone
QR codes need clear space around them. Do not crowd the edges with artwork or text.
Skipping tests
Always test the exact printed size under realistic lighting and distance.
Recommended tool
Use the QR Code Generator to create the QR code described in this guide.