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A high-performance and feature-rich WinUI PDF framework for working with PDF files. This framework has a PDF creation and editing library, which allows you to create, read, and edit PDF files programmatically. Its powerful conversion APIs make it easy to convert Word, Excel, PowerPoint files and images to PDF.

Overview diagram of WinUI SDK PDF Framework.

Why Syncfusion?

Blazing-fast performance

Optimized performance to work in an environment where speed and low memory usage are critical.

Powerful and comprehensive APIs

All the elements in a typical PDF document like text, formatting, images, shapes, and tables are accessible through a comprehensive set of APIs.

Proven PDF library

Syncfusion Essential PDF has been a mature and proven product for over 10 years.

Fully documented

Syncfusion Essential PDF comes with extensive documentation, knowledge base, and samples.


A single API across all platforms.

PDF: Creating and editing APIs

Create PDFs from scratch with text, images, graphics, and more. Manipulate or edit PDF files with just a few lines of code.

csharp PDF forms.

PDF forms

Create, read, fill, and flatten PDF form fields in AcroForms.

WinUI Merge PDFs.

Merge PDFs

Combine or merge different PDF files into one PDF file.

csharp Split PDFs.

Split PDFs

Split a PDF file into different sub-documents quickly and accurately.

Edit and manipulate WinUI PDF

Edit and manipulate

Add text, images, graphics, shapes, annotations, bookmarks, and stamps, and change a PDF file by replacing fonts and images.

WinUI PDF Security.


Build PDF security into an application, spanning a range of low-to-high encryption standards.

Compress PDF files in WinUI

Compress PDFs

Compress or optimize PDF files to reduce file size.

WinUI PDF Tables.


Create stunning PDF tables with advanced customization, formatting, and styling.

For more information, please check our WinUI PDF library features.

PDF conversions

Word to PDF conversion in WinUI

Word to PDF

Convert a Word document to PDF for printing and viewing in a portable format. Use various customization options like embedding fonts and export bookmarks.

Excel to PDF conversion in WinUI

Excel to PDF

Convert an Excel workbook or worksheet to PDF format. Use various customization options like embedding fonts, ignoring empty pages or worksheets, and showing or hiding headers or footers.

PowerPoint to PDF conversion in WinUI

PowerPoint to PDF

Convert a PowerPoint presentation to PDF. The conversion can be customized with handouts and pages for notes.

Image to PDF conversion in WinUI

Image to PDF

Convert image formats such as JPEG and PNG to PDF.

WinUI PDF Code Example

Easily get started with the WinUI PDF Library using a few simple lines of C# code example as demonstrated below. Also explore our WinUI PDF Library Example that shows you how to render and configure the WinUI PDF.

//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a page
PdfPage page = document.Pages.Add();
//Create Pdf graphics for the page
PdfGraphics graphics = page.Graphics;
//Set the font
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 36);
//Draw the text
graphics.DrawString("Hello world!", font, PdfBrushes.Black, new PointF(20, 20));
//Saving the PDF to the MemoryStream
MemoryStream ms = new MemoryStream();

Frequently Asked Questions

The Syncfusion WinUI PDF Framework supports the following:

  • Create and edit unique PDF files with text and graphics with just a few lines of code.
  • Open, modify, save, and compress PDF files.
  • Redact text and images, encrypt and decrypt documents, merge multiple documents, and split PDF files using advanced standards.
  • Easily view and examine PDF files within your application.
  • One of the best WinUI PDF libraries on the market, offering a rich set of APIs to interact with the software.
  • Easily ensure files adhere to PDF/X1-A, PDF/A1-B, PDF/A3-B, and PDF/A1-B conformances.
  • Convert HTML, Word, Excel, PowerPoint, and image files to PDF. Convert WinUI PDFs to 20+ of the most common formats.
  • Digitally sign and validate signatures in PDF files.
  • Within an application, interactively view, annotate, and fill out fields in PDF forms.
  • Extensive demos, and documentation to learn quickly and get started with WinUI PDF processing.

No, this is a commercial product and requires a paid license. However, a free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.

A good place to start would be our comprehensive getting started documentation.

Apart from WinUI, the Syncfusion PDF Framework supports platforms for web (Blazor, Flutter, ASP.NET Core, ASP.NET MVC, and ASP.NET Web Forms), mobile (.NET MAUI, Flutter, Xamarin, and UWP), and desktop (Windows Forms, WPF, .NET MAUI, Flutter, Xamarin, and UWP).

You can find our WinUI PDF Frameworks demo here.


Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion is proud to hold the following industry awards.

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