PDF4QT is open source PDF editor based on Qt framework. It contains a C++ library, applications for viewing/editing PDF documents, and a command line tool. PDF4QT is an open-source PDF editor for Windows/Linux. It is a modern solution for viewing/editing/rendering PDF documents, for users and developers alike. For developers, there is a C++ library and a command line tool for use in scripts.
Cross-platform SDK for creating and modifying PDF documents
...It includes tools for parsing PDF internals like cross-reference tables and objects, providing fine-grained document analysis capabilities. The project is unit-tested with continuous integration pipelines, supporting sanitizers for enhanced code quality and stability.
Preprinting preparation tool for PDF ebooks. On windows create a folder build/ beside src/ directory. PDF v1.7 support. Decrypt encrypted PDFs. Join or Split PDFs. Scale to any paper size, with specified margin. Write Page numbers. Write text and transform pages (rotate, flip, move). Booklet format arrange. 2 or 4 pages per page (2-up, 4-up). More readable output syntax for easy debugging.
Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit. You can change raw pdf objects (for advanced users) or use many gui functions. Functionality can be easily extended using a scripting language (ECMAScript).
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