How to convert a Word document to PDF in C#?

Syncfusion® Essential® DocIO is a .NET Core Word library used to create, read, and edit Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can convert a Word document to PDF in C#.

Steps to convert a Word document to PDF in C#:

1. Create a new C# .NET Core console application project.

2. Install the Syncfusion.DocIORenderer.NET.Core NuGet package as a reference to your .NET Core application from NuGet.org.

3. Include the following namespaces in the Program.cs file.

C#

using Syncfusion.Pdf;
using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
using Syncfusion.DocIORenderer;

4. Use the following code snippet to convert a Word document to PDF.

C#

using (FileStream inputStream = new FileStream(Path.GetFullPath(@"../../../Template.docx"), FileMode.Open))
{
    // Load an existing Word document.
    using (WordDocument wordDocument = new WordDocument(inputStream, FormatType.Automatic))
    {
        // Create an instance of DocIORenderer.
        using (DocIORenderer renderer = new DocIORenderer())
        {
            // Convert the Word document into a PDF document.
            using (PdfDocument pdfDocument = renderer.ConvertToPDF(wordDocument))
            {
                // Save the PDF file.
                using (FileStream outputStream = new FileStream(Path.GetFullPath(@"../../../WordToPDF.pdf"), FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite))
                {
                    pdfDocument.Save(outputStream);
                }
            }
        }
    }
}

A complete working sample to convert a Word document to PDF in C# can be downloaded from GitHub.

By executing the program, you will get the PDF document as follows.

Take a moment to peruse the document where you can find basic Word document processing options along with the features like mail merge, merge and split documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

Explore more about the rich set of Syncfusion® Word Framework features.

An online example to convert a Word document to PDF.

See Also:

Convert Word to PDF in UWP

Convert Word to PDF in Xamarin

Note:

Starting with v16.2.0.x, if you reference Syncfusion® assemblies from a trial setup or from the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion® license key in your application to use the components without a trial message.