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Glossary Design & Media

QR code

A QR code is a two-dimensional barcode, a square grid of dark and light modules, that stores text or a link and is read by a phone camera.

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In more detail

It comes in versions 1 to 40, from 21 × 21 to 177 × 177 modules, and four error-correction levels recovering about 7%, 15%, 25% or 30% of damage. Version 40 at level L holds up to 7,089 digits. See How QR Codes and Barcodes Work.

Try these tools

QR Code Generator

Generate a downloadable QR code from any text or URL, with adjustable size and error correction level.

QR Code Scanner

Upload an image containing a QR code to decode its text content, then copy the result.

See also

  • Glossary Barcode
    A barcode is a pattern of bars and gaps that encodes a number or text so a scanner can read it quickly.
  • Guide How QR Codes and Barcodes Work
    QR versions and sizes, the four error-correction levels, exact capacity limits, and how UPC and EAN check digits are computed.
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