6 guides

QR code guides

Practical answers for the part after you make a code: printing it at the right size, scanning it, and knowing what kind of code you have.

• Guide

  Static vs Dynamic QR Codes

  A static QR code holds its content in the pattern and never expires. A dynamic one points at a redirect you rent. How they differ, and which to choose.

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• Guide

  QR Code Size Guide

  The smallest QR code size for print: 2 cm (0.8 in) up close, plus 1 cm per 10 cm of scanning distance. With the four-module quiet zone and data limits.

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• Guide

  QR Code With a Logo

  How to put a logo on a QR code and keep it scannable: how large it can be, what it must never cover, which error correction to use, and how to test one.

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• Guide

  WiFi QR Code Troubleshooting

  Phone scans the WiFi QR code but will not connect? Check the network name, capitals, hidden networks and WPA type first. Eight fixes, most likely first.

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• Guide

  Why a QR Code Stopped Working

  A QR code that used to scan and now fails is usually a dynamic code whose trial ended, or a page that moved. How to tell which, fix it, and stop it recurring.

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• Guide

  How to Scan a QR Code

  Scan a QR code with the camera already on your phone: the steps for iPhone and Android, how to read a code on your own screen, and what to do if it fails.

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