Generate, import and export PDF documents using C# and VB.NET with PdfProcessing for WPF. The library supports .NET Framework, .NET Core and .NET Standard. Its API offers two editing approaches—using native PDF elements, which allows you great control over the content structure, or editing the PDF document as a flow document, which enables you to autoflow content into pages. 

Documentation of the Telerik PdfProcessing Library  

Add, customize or delete a page in a PDF document. Use the page properties to specify page size, orientation and more.

Documentation on how to work with Pages in RadPdfProcessing

Images in the PDF document are decoded on demand to maximize performance, while keeping access to the encoded image data. You can also control the image quality when saving the document.

Documentation on how to work with Images in RadPdfProcessing

The WPF PdfProcessing library features rich APIs, allowing you to describe the geometry of a 2D shape. You can create lines, paths, Bezier curves, arcs, rectangles and more to visualize any content.

Documentation on the supported Geometries in RadPdfProcessing

Clipping helps you define the bounding outline of content elements like images and paths so you can fine-tune which parts of the elements are visualized in the document.

Documentation on Clipping support in RadPdfProcessing

Form XObjects are designed to describe a complex object that groups any combination of text, images, vectors and more elements within a PDF document and reuse it as many times as you need by positioning them on the PDF pages with the appropriate size and orientation. This approach also helps significantly reduce document size.

Digitalize old Excel/Word forms or paper documents with editable PDF documents. Use interactive textboxes, radio-buttons, listboxes and similar controls to allow the user to fill data and save it in a PDF format. 

Once the users fill the required data, you can also flatten the forms. The form field flattening feature removes all fields but preserves their content in the document to disallow further modifications.

Documentation on working with Interactive Forms in RadPdfProcessing

The digital signature feature enables you to sign and validate a PDF document utilizing the best encryptions standards. It primarily helps users ensure the document has not been tampered with. In addition, digital signatures can be used for form approval or contract signing.

Documentation on Digital Signature support in RadPdfProcessing

Bookmarks or outlines are positions in the document which can be named and displayed in a hierarchical structure. They are useful to point users to certain locations in the document or to create a Table of Contents.

Documentation on Bookmarks support in RadPdfProcessing

Annotations associate an object with a location on a page of the PDF document, which provides the user with a way to interact. The Telerik WPF PdfProcessing library supports two types of annotations—link annotations and widget annotations. Link annotations represent a link to a destination elsewhere in the document or a URL action to be performed. Widget annotations on the other hand are used to define the visual appearance of and manage user interactions within the interactive form fields of the PDF document.

Documentation on Annotations support in RadPdfProcessing

Destinations may be associated with outline items, annotations or actions. In each case, the destination specifies the view that the document automatically displays when the outline is open or the action is performed. Destinations can be represented as named destinations, which is particularly handy when you need to use a destination more than once.

Documentation on Destinations support in RadPdfProcessing

The PdfProcessing API provides the means to set ARGB colors as well as to define various patterns, such as tiling and sophisticated gradients—all of which can be used to color objects in the document (geometries, text and more).

Documentation on Colors and Color Spaces support in RadPdfProcessing

Display any type of text in any language thanks to the sophisticated encoding capabilities of the PdfProcessing library. It works with a plethora of Character maps (CMAPs), as well as standard and embedded PDF fonts, such as Type0 (CIDFontType0, CIDFontType2), Type1 and TrueType fonts.

Documentation on Fonts support in RadPdfProcessing

According to the PDF standard, Type 3 fonts can contain lines, areas, shares of gray, images, graduated fills or variable stroke width. This makes them quite useful for displaying logos or barcodes. If you need to embed Type 3 fonts in your PDF file or want to manipulate a PDF file that uses Type 3 fonts, RadPdfProcessing has got you covered.

When creating or editing a PDF document, you can rely on the Telerik WPF PdfProcessing library’s rich API for styling textual and graphical elements. Customize properties, such as fill, text stroke, font size, font family and many more so you can easily meet any requirement. 

Protect PDF documents with a password in order to safeguard sensitive information and ensure only authorized users can open the file.

Progress Telerik PdfProcessing supports Encryption Algorithm 5 with AES 256. Below is the list of encryption algorithms currently supported:

• For import: RC4 (V2), AES-128 (AESV2), AES-256 (AESV3)
• For export: RC4 (V2), AES-256 (AESV3)

The encryption algorithm can be managed using the EncryptionType property. For more information, please refer to the PDF Processing Export Settings.

Telerik WPF PdfProcessing features support for applying the PDF/A standard to a document upon export. The PDF/A standard aims to ensure the longevity of PDF documents by making them self-contained. In this way, PDF files preserve their integrity regardless of the device they are open on.

Documentation on PDF/A Standard support in RadPdfProcessing

Combine pages of multiple PDF documents into a single PDF file by utilizing Merge Document functionality.

The PdfFileStream API exposes functionality for exporting PDF files with unmatched performance and minimized memory footprint. Extremely useful when you need to add content to an existing document, merge or split documents without having to load the document model in memory.

Extracting text from a PDF file is no easy job. With Telerik PdfProcessing for WPF, you can easily convert a PDF file to plain text, which can come handy for indexing purposes.

Documentation on how to export a PDF or plain text with RadPdfProcessing