Optional advanced logic (SE 8+): QrSegmentAdvanced.java The library: QrCode.java, QrSegment.java, BitBuffer.java The full project repository is available at GitHub: Java language ( SE 7 and above) When in doubt, please consult the Java code to read the more extensive documentation comments and to check what types and values are considered legal. The TypeScript, Python, Rust, and C++ ports are translated from the Java codebase, with a balance between writing idiomatic code in the target language but also not deviating too much from the Java codeâs design. Regardless of the language used, the generated results are guaranteed to be identical because the algorithms are translated faithfully.įor my own convenience when designing and testing the code, the Java language port of the QR Code generator library is considered to be the master reference implementation. Each language port is pure and doesnât use foreign function calls. This library is designed with essentially the same API structure and naming in multiple languages for your convenience: Java, TypeScript, Python, Rust, C++, C. User can create a list of data segments manually and add ECI segmentsĮncodes Japanese Unicode text in kanji mode to save a lot of space compared to UTF-8 bytesĬomputes optimal segment mode switching for text with mixed numeric/ alphanumeric/ general/ kanji parts User can specify absolute error correction level, or allow the library to boost it if it doesnât increase the version number User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data Open-source code under the permissive MIT License Output format: Raw modules/ pixels of the QR symbolĭetects finder-like penalty patterns more accurately than other implementationsĮncodes numeric and special-alphanumeric text in less space than general text Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard Significantly shorter code but more documentation comments compared to competing libraries (a competitive analysis is provided near the bottom of this page) You can generate QR Code symbols conveniently on this web page, powered by the TypeScript port of this library.Īvailable in 6 programming languages, all with nearly equal functionality: Java, Java (fast), TypeScript/ JavaScript, Python, Rust, Rust (no heap), C++, C For each language, the codebase is roughly 1000 lines of code and has no dependencies other than the respective languageâs standard library. The library is designed first in Java and then ported to TypeScript, Python, Rust, C++, and C. I believe that my library has a more intuitive API and shorter code length than competing libraries out there. This work is an independent implementation based on reading the official ISO specification documents. Secondary goals are compact implementation size and good documentation comments. My primary goals are flexible options and absolute correctness. This project aims to be the best, clearest library for generating QR Codes.
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