This repository is the endroid/qr-code PHP library for generating QR codes in multiple output formats including PNG, GIF, WebP, SVG, EPS, PDF, binary text, and console output. It provides a clean object-oriented architecture with immutable value objects (QrCode, Color, Matrix), a Builder facade for convenient construction, and a set of Writer classes each implementing WriterInterface. The library delegates low-level QR encoding to BaconQrCode and handles matrix rendering, logo overlays, and label placement. It includes optional validation by decoding the generated image. The code is modern PHP 8.4, utilizing readonly classes, enums, named arguments, and strict typing. The separation of concerns is clear: QrCode holds data parameters, Matrix encapsulates the binary grid and size calculations, Writers produce format-specific results, and Results provide uniform access to the output. The Builder aggregates all common options and allows per-call overrides. The library is well-maintained with active CI, zero dependabot alerts, and runs on the latest PHP versions.