What Size Should a QR Code Be for Print?
By Qrenzo · 5 min read ·
A QR code that is too small, too low-contrast or too crowded will frustrate people. A few simple rules make printed codes scan reliably.
The minimum size
For scanning at arm’s length, such as on a business card or receipt, about 2 cm by 2 cm (roughly 0.8 inches) is a common minimum. Bigger is easier, especially if the link is long, because long links create denser codes with smaller dots.
Size depends on distance
A useful rule of thumb is that the code should be about one tenth of the scanning distance. If people will scan from 1 metre away, aim for about 10 cm wide. For a window sign scanned from 2 metres, aim for about 20 cm.
- Business card or receipt: 2 to 3 cm.
- Counter flyer or table card: 7 to 9 cm.
- Wall poster or window sign: 15 cm or more.
Keep the quiet zone
Leave a blank border around the code, at least four dots wide. Qrenzo adds this margin automatically on a white panel, so the code stays readable even on a coloured flyer.
Contrast and colour
- Use dark code dots on a light background. Black on white is the safest.
- Do not invert the colours or print on busy photographs.
- Avoid glossy paper that reflects light. Matte works best.
Print at 100%
When you print a PDF, choose Actual size or 100% rather than Fit to page. Shrinking the page shrinks the code. Then test the printout with two or three phones before you display it.
Shorter links make easier codes
The shorter the link, the simpler the code and the easier it is to scan at small sizes. Use a short link where possible, for example the short “Get more reviews” link for a Google review QR code. If a code still will not scan, see QR code not scanning? 7 fixes.