Documenso has developed LibPDF, an open-source PDF library specifically designed for TypeScript. After years of grappling with the limitations of existing libraries like pdf.js, pdf-lib, and pdfkit, they set out to create a solution that handles real-world PDF challenges. LibPDF offers features such as lenient parsing, which allows it to recover from unusual PDF structures, and supports incremental saves, letting users modify signed documents without invalidating existing signatures. The library also provides native digital signature capabilities, eliminating the need for external signing services and reducing reliance on complex Rust bindings. LibPDF is built with TypeScript at its core, offering full type inference and proper async patterns. It integrates a comprehensive set of features that include encryption options, form filling, text extraction, and image embedding. The library draws inspiration from established projects like pdf-lib and pdf.js, incorporating their strengths while addressing shortcomings in the current ecosystem. Though still in beta, LibPDF is already in production use at Documenso and is expected to evolve based on real-world application and user feedback. The team acknowledges the foundational work of previous developers and plans to enhance LibPDF further by adding signature verification, annotation support, and improved HTML-to-PDF generation. Users are encouraged to test the library with their own PDFs and provide feedback, aiming to establish LibPDF as a go-to tool for document workflows.