This PDF library can create, open, merge or otherwise manipulate PDF files. You can use the PDF library's commands as well as WinApi functions. PDF security, font embedding, different font charsets, document compression are also supported.

Main features:

Extended set of methods and properties for easy PDF file generation;
Reading and merging existing PDF documents;
Adding and deleting PDF document's pages;
Unicode support;
Ability to create watermarks for each page;
Ability to add thumbnails for a PDF document;
Ability to use and embed fonts in different formats (TrueType, TrueType Collection, OpenType, Type1);
Full support for Eastern European, Turkish, Baltic, Russian, Greek, and CJK, such as Japanese, Korean, and so forth, character sets;
Ability to create interactive PDF documents using JavaScript and Hyperlinks;
Support for interactive AcroForm elements: text input fields, buttons, radio buttons, combo boxes, check boxes;
Encryption and password protection for generated PDF documents;
Ability to create and manipulate tree-like outlines;
Virtual device context (HDC), which can be used to draw on a PDF page using WinAPI functions. Using virtual device context you can easily add PDF generating features to your existing applications;
Ability to use images in different formats (JPEG, TIFF, PNG, BMP, GIF);
Ability to create and use annotations;
Ability to generate a PDF document on disk or in memory (useful for web applications);
and much much more.