• Populate a PDF file's form fields by familiar name-value pairs and create a new completed PDF form or file. You can set both value and formatted display string of a field. • Stamp images into the specified form field. • Set the general options of form objects and modify the properties of a form field. • Set the default value of fields. • Return the type of form object by name. • Set and/or get the list of items of combo boxes or list boxes. • Import form data from a FDF, XFDF or XML file into a PDF template and create a new merged PDF form or file; Import form data from a memory buffer. • Extract form data field by field directly from a PDF form or from a FDF/XFDF/XML file. • Export data from a PDF form and create a new form data file in FDF, XFDF (XML-based FDF) or XML format; Write form data to a memory buffer. • Create a FDF, XFDF or XML data file from name-value pairs. • Flatten a PDF form to remove the fields and stamp the content into the document. • Add security (native 40-bit & 128-bit PDF encryption) to your PDF forms to prevent anyone from changing it or altering the information. • Retrieve or set the information of PDF documents. • Write a completed PDF file to a memory buffer. • Digitally Sign a PDF Document. • Security Features: Add security (40-bit & 128-bit) to any PDF files; Change or Remove the encryption of your PDF documents. • Utility Features: Merge PDF documents; Split PDF document. • Utility Features: Merge interactive PDF form file. • Set the opening display options (Viewer Preferences) for the document. • Stamp stylized text directly on the specified page.

* Read, Edit, Create or Write PDF -documents from file or Stream * Print PDF document with full control on the printing process * Full support for incremental saving to preserve document content history * Fast linearized PDF saving (also called "Fast Web View") * Interactive PDF features support: Actions, document-level navigation and more * File linking support * Repair corrupted documents * Pack and compress existing documents reusing existing resources to dramatically reduce file size *Very fast on large documents * Strong objects serialization to produces 100% compliant and smaller PDF documents * Very fast text extraction engine, on whole page or ROI * Add / Extract Fonts * Add / Extract / Replace /Optimize / Remove Bitmaps * Write text with font embedding and full Unicode support * Barcodes drawing * Flatten form fields and annotations * Form fields creation and edition * PDF annotations editing * Full support for PDF transparency schemes for rendering & PDF creation * Graphics state stack and transformation matrix support * Bookmark reading & writing * Full action support * File attachments management * Page labeling support * Page drawing support (i.e.: drawing a page from a PDF to a page of another PDF) * Page cloning and duplication * Support all encryption schemes for reading and writing, from RC4 48 bits to AES 256 bits * Apply security to existing or new documents * Rasterize PDF pages to bitmap with high fidelity rendering and high speed * DigiSign documents (support for Adobe PPKMS and Adobe PPKLite modes) * Merge / Split documents * Swap / Delete / Append / Rotate pages * Full interaction with the GdViewer & the ThumbnailEx controls * Edit PDF document and display updated version on a Viewer in real-time * Set of low-level API to manipulate paths * AnyCPU: available in 32-bit & 64-bit versions * Can work in multi-thread applications