QR & Tech

QR code

Quick Response code — a two-dimensional barcode that encodes data (typically a URL) readable by smartphone cameras. Restaurants use QR codes to send customers to a digital menu without needing an app download. Standardized as ISO/IEC 18004; not patent-restricted.

Why this matters for restaurants: The QR code (invented by Denso Wave in 1994, royalty-free since the patent expired) became the default way restaurants offer digital menus during 2020-2021 and stuck. The reason: any modern smartphone camera reads QR codes natively, no app download required, and the printed code is cheap and durable.

For restaurants, QR code quality affects scan-to-view rate. Common mistakes: code too small (under 1" / 2.5cm at standard reading distance won't scan reliably), low contrast (light gray on white), printed on glossy surfaces with reflection issues, or a static code pointing at a destination URL that later breaks. See our free QR code generator or the deeper guide QR Code Menu Not Working — 5 Common Fixes.

Related Terms

QR & Tech
Dynamic QR code
A QR code that encodes a redirect URL controlled by the operator, allowing the destination to be changed without reprinting the code. The opposite of a static QR code, which has the URL hard-coded into the printed pattern.
QR & Tech
Static QR code
A QR code with the URL permanently encoded into the printed pattern — cannot be changed without reprinting. Free to generate. Risk: if the destination URL changes, every printed copy stops working. Mitigated by encoding a permanent URL pattern.
QR & Tech
Error correction (QR)
Built-in redundancy in a QR code that lets it scan correctly even when partially damaged or obscured. Levels: L (7%), M (15%), Q (25%), H (30%). Higher levels mean more dots and slightly larger minimum scannable size; M is recommended for most printed restaurant materials.

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Client-side tool — custom colors, error correction, SVG/PNG download. No signup or watermark.
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