Formats

Open a code, then Download. Choose the format and the size:

  • PNG: an image for screens, documents and messages. Width in pixels: 512 px1024 px2048 px4096 px
  • SVG, PDF and EPS: vector files for print that stay sharp at any size. Printed width: 20 mm30 mm50 mm100 mm200 mm
  • Transparent background: for placing the code on a coloured design. Keep a strong contrast with what is behind it.

Before printing

  1. Keep printed codes at least 2 cm wide; bigger for scanning from afar.
  2. A common rule of thumb: make the code about a tenth as wide as the distance it is scanned from, so about 30 cm for a poster read from 3 m.
  3. Keep a dark code on a light background with a clear margin around it. The editor refuses colour pairs that are hard to scan.
  4. Test a printed proof with a few phones before printing many copies. The “Test on your phone” link on the code's page opens it like a visitor, without counting a scan.
  5. The short link of a dynamic code never changes, so printed copies keep working when you change what it opens.