This is a high-performance, multi-format barcode reading and writing library (zxing-cpp), the C++ port of the original ZXing Java library. It supports reading and generating over 30 symbologies including QR Code, Data Matrix, Aztec, PDF417, MicroPDF417, MaxiCode, and all common 1D formats (EAN/UPC, Code128, Code39, Codabar, ITF, DataBar, Telepen). The library is implemented in modern C++ with a clean, modular architecture: each symbology has its own detector, decoder, and writer. Core utilities include generic Reed-Solomon error correction, histogram-based and hybrid binarization, perspective transforms, grid sampling, and pattern matching templates. It provides a unified C API that all language wrappers bind to, ensuring consistent behavior across platforms. The library does not include a standalone application; rather, it is designed to be embedded in other software via its wrappers for Python, .NET, Go, Rust, Kotlin/Native, Qt, iOS, Android, WinRT, and WebAssembly. Extensive test coverage includes unit tests (Google Test), blackbox image regression tests, and fuzz tests. The project is actively maintained with frequent commits, CI/CD pipelines for publishing packages to multiple package managers, and commercial support available. The code demonstrates advanced craftsmanship in template metaprogramming, algorithmic pattern matching, and efficient image processing.