Why does my code not scan?

The creator checks every design with a QR reader before you download it. If a printed code still does not scan, one of these is the usual reason.

Too little contrast

Phones need a dark code on a light background. Light codes on dark backgrounds, and pale colours, often fail. Make the code darker or the background lighter.

Too small

Print the code at least 2 cm wide. For every 10 cm between the phone and the code, make the code about 1 cm wider: a poster seen from 2 metres needs a code about 20 cm wide.

No empty border

A QR code needs a quiet border of empty space around it. Do not print text, lines or pictures right up to its edge.

The logo is too big

A logo covers part of the code. Make it smaller in the designer; the scan check says when it is too big.

Too much content

A fixed code holds all its content, so a long text or link makes a dense code that is hard to read when small. Use a changeable code instead: it holds only a short link.

The print or the place

Shiny paper and glass can reflect light. Try a matt print.
Curved surfaces like cups and bottles bend the code. Print it smaller or on the flat part.
Low-quality printing can blur the squares. Download SVG, PDF or EPS for print, or PNG at 2048 px or more.

It scans, but shows a message

The code works, and the message says why it does not go on: it is paused, it is not live yet, it reached its scan limit, it needs a password, or we stopped it because its link may be unsafe. Check the code in My codes.

Still stuck? Write to [CONTACT EMAIL].