LibPDF-js/core is a modern, TypeScript-first PDF processing library that provides a comprehensive toolkit for parsing, modifying, and generating PDF documents with a clean, intuitive API designed to handle real-world files safely and robustly. Unlike many existing JavaScript PDF libraries, it emphasizes lenient parsing that can gracefully handle malformed structures and fallback strategies where typical parsers fail, making it useful for production environments that encounter unpredictable file formats. The library offers full read and write manipulation, including support for encryption with RC4 and modern AES cipher suites, form filling and flattening, digital signature creation and verification, page merging/splitting, rich text extraction with layout information, and font embedding with subsetting.
Features
- Parse and recover from malformed PDFs
- Create, modify, merge, and split PDF files
- Encryption and decryption support with AES/RC4
- Digital signatures and incremental saves
- Form field manipulation and flattening
- TypeScript-first API with strong type safety
Project Samples
