QR Code Generator API

QR Code is the two-dimensional matrix barcode standardized in ISO/IEC 18004, originally developed by Denso Wave for automotive parts tracking and now the most widely deployed 2D symbology in the world. It arranges data into a square grid of black and white modules and stores URLs, plain text, contact cards, or binary payloads, with built-in Reed-Solomon error correction that keeps the code scannable even after partial damage.

BarGen generates a QR Code from a single REST call: send the data string and desired size, and the API returns an SVG or PNG image ready to embed in a web page, print job, or PDF. Error correction level, module color, and quiet zone are all configurable parameters.

QR Code (Quick Response Code) is a two-dimensional matrix barcode invented in 1994 by Denso Wave, a Japanese automotive company. Originally designed for tracking parts in vehicle manufacturing, it has become the most widely used 2D barcode format worldwide.

QR codes can store various types of data including URLs, text, contact information, WiFi credentials, and more. They can hold up to 7,089 numeric characters or 4,296 alphanumeric characters, making them incredibly versatile for many applications.

One of the key features of QR codes is their error correction capability. Even if part of the code is damaged or obscured, it can still be read. This makes them ideal for printed materials that may get worn or partially covered.

Common use cases include mobile payments, product packaging, event tickets, restaurant menus, marketing campaigns, and authentication systems.