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Printing & posting

What size to print a QR code

A posted QR code is useless if it's too small to scan — and a waste of space if it's too big. There's an easy way to pick the right size from how far away people will scan it.

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The basic rule: about a tenth of the distance

Make the QR code's side roughly one tenth of the distance you want it scanned from. At 30 cm (a flyer in hand) aim for about 3 cm; at 3 m (a wall posting) aim for about 30 cm. Sizing up a little makes scans more forgiving.

Scanning distanceQR side (guide)Typical place
~30 cm~3 cmFlyer, business card, menu in hand
~1 m~10 cmRegister, reception, table POP
~3 m~30 cmWall posting, entrance door
~5 m+~50 cm+Large poster or banner

Beyond size: keeping scans reliable

  • Leave a margin (quiet zone) around it — don't crowd it with text or graphics
  • Use a white background and a near-black code for high contrast
  • Matte paper scans better than glossy, which reflects light
  • After printing, always test-scan it from the intended distance with a phone
  • When resizing, keep the aspect ratio square. A stretched, distorted code won't scan.
  • Outdoors, rain and sun fade the print over time. Consider laminating it or replacing it periodically.

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