libqrencode is a fast and compact library for encoding data in a QR Code symbol, a 2D symbology that can be scanned by handy terminals such as a mobile phone with CCD. The capacity of QR Code is up to 7000 digits or 4000 characters and has high robustness.
libqrencode accepts a string or a list of data chunks then encodes in a QR Code symbol as a bitmap array. While other QR Code applications generate an image file, using libqrencode allows applications to render QR Code symbols from raw bitmap data directly. This library also contains a command-line utility outputs QR Code images in various formats.
While the command-line utility and some test programs use libpng or SDL 2.0, the libqrencode library itself has no dependencies.
This is free and open source software.
Features include:
- Supports QR Code model 2, described in JIS (Japanese Industrial Standards) X0510:2004 or ISO/IEC 18004. Most of features in the specification are implemented such as:
- Numeric, alphabet, Japanese kanji (Shift-JIS) or any 8 bit code can be embedded.
- Optimized encoding of a string.
- Structured-append of symbols.
- Micro QR Code (experimental).
Website: fukuchi.org/works/qrencode
Support:
Developer: Kentaro Fukuch
License: GNU Lesser General Public License v2.1
libqrencode is written in C. Learn C with our recommended free books and free tutorials.
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