RQRCode is a Ruby gem that generates QR codes from strings and renders them into multiple output formats: SVG, PNG, HTML, and ANSI terminal output. It wraps the `rqrcode_core` gem for QR matrix generation and adds rendering capabilities. The SVG renderer includes an optimized path-tracing algorithm that produces compact output by tracing the perimeter of dark modules rather than drawing individual rectangles, demonstrating significant engineering craftsmanship. The PNG renderer supports two sizing strategies (Google-inspired and original) and accepts flexible color inputs. The gem includes a comprehensive benchmarking suite (using benchmark-ips, memory_profiler, and stackprof) that measures both end-to-end and rendering-only performance, with results saved as JSON for tracking over time. The codebase is well-structured, follows Ruby conventions, and has thorough test coverage across all export formats.