Telerik PdfProcessing for WinForms is a document-processing library that enables your applications to easily generate, import and export PDF documents using C# and VB.NET. With support for .NET Framework, .NET Core and .NET Standard, its API contains two different editors. You can choose between editing in a flow-like manner with the RadFixedDocumentEditor or customizing the PDF document structure with the FixedContentEditor.

Documentation of the Telerik PdfProcessing Library

The Telerik PdfProcessing library for WinForms is built for outstanding performance with minimal memory footprint—it decodes images only when needed, compresses the content with FlateDecode encryption to reduce its size and embeds font subsets by including only the most utilized glyphs.

Telerik WinForms PdfProcessing enables you to easily insert content that flows between pages with the help of blocks, tables and lists.

Add, modify or delete a page in a PDF document. Set page properties, including page size, orientation and more.

Documentation on how to work with Pages in RadPdfProcessing

Images are decoded on demand to maximize performance, without losing the encoded image data. The API also enables you to control the image quality when saving the document.

Documentation on how to work with Images in RadPdfProcessing

Describe and draw two-dimensional shapes, including lines, paths, Bezier curves, arcs, rectangles and more.

Documentation on the supported Geometries in RadPdfProcessing

Control how content elements like images and paths are displayed in a PDF document by defining their bounding outline.

Documentation on Clipping support in RadPdfProcessing

Describe and bundle multiple objects like text, images, vectors and more elements into a single object within a PDF document and reuse it as many times as you need. This promotes efficiency and optimal document size.

The digital signature feature enables you to sign and validate a PDF document in accordance with the best encryption standards. It allows users to approve forms, sign contracts and protect documents from being tampered with.

Documentation on Digital Signature support in RadPdfProcessing

Through annotations, you can associate an object with a location inside the PDF document to provide users with an interactive point. The Telerik PdfProcessing library for WinForms offers two types of annotations—link and widget annotations. Link annotations enable you to link a destination elsewhere in the document or trigger an external URL action. Widget annotations enable you 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

Use destinations to associate outline items, annotations or actions in a PDF document. The destination defines the document view when the outline is open or the action is performed. To reuse a destination without breaking or changing internal and external links, simply create a named destination.

Documentation on Destinations support in RadPdfProcessing

Thanks to its powerful API capabilities, the WinForms PdfProcessing library enables you to define an ample variety of color spaces, including ARGB colors, color patterns and sophisticated color gradients, to customize the appearance of PDF objects, such as geometries, text and more.

The Telerik PdfProcessing for WinForms empowers you to display any type of text in any language through its built-in encoding capabilities. The library supports standard and embedded PDF fonts, including Type0 (CIDFontType0 and CIDFontType2), Type1 and TrueType as well as a variety of Character maps (CMAPs).

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. 

The library comes with a rich API for customizing the appearance of textual and graphical elements. When creating or editing a PDF document, you can control style properties, including fill, stroke, font size, font family and many more to easily meet any design requirements.

Protect sensitive information and prevent unauthorized users from opening the files by encrypting your PDF documents with a password.

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.

You can update an existing PDF document or create a new one by adding select pages from multiple PDF files with the help of the Merge Document feature.

Export PDF documents to a PDF/A-compliant format to extend their longevity. The PDF/A standard aims at ensuring that PDF documents are displayed in the exact same way whenever they are open and regardless of the device.

Documentation on PDF/A Standard support in RadPdfProcessing

Bookmarks link to a particular page or section of a PDF file, allowing users to quickly jump to that portion of the document. Bookmarks can be easily named and organized a hierarchical structure to provide a listing of the PDF’s contents.

Documentation on Bookmarks support in RadPdfProcessing

Create fillable PDF forms to collect user information. Use interactive textboxes, radio-buttons, listboxes and similar controls to allow the user to fill in data, save and digitally sign the PDF document. 

Once the users fill in the 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

It can be hard to extract text from a PDF file. With Telerik PdfProcessing for WinForms, you can effortlessly convert a PDF file to plain text, which can additionally serve indexing purposes.

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