Convert PowerPoint Presentations to Word Documents in C#

Overview

This article provides a solution for developers on converting PowerPoint and OpenDocument presentations to Word documents using Aspose.Slides for .NET and Aspose.Words for .NET. The step-by-step guide walks you through every stage of the conversion process.

Convert a Presentation to a Word Document

Follow the instructions below to convert a PowerPoint or OpenDocument presentation to a Word document:

1. Instantiate the Presentation class and load a presentation file.
2. Instantiate the Document and DocumentBuilder classes to generate a Word document.
3. Set the page size for the Word document to match that of the presentation using the DocumentBuilder.PageSetup property.
4. Set margins in the Word document using the DocumentBuilder.PageSetup property.
5. Go through all the presentation slides using the Presentation.Slides property.
   • Generate a slide image using the GetImage method from the ISlide interface and save it to a memory stream.
   • Add the slide image to the Word document using the InsertImage method from the DocumentBuilder class.
6. Save the Word document to a file.

Let’s say we have a presentation “sample.pptx” that looks like this:

The following C# code example demonstrates how to convert a PowerPoint presentation to a Word document:

// Load a presentation file.
using var presentation = new Presentation("sample.pptx");

// Create Document and DocumentBuilder objects.
var document = new Document();
var builder = new DocumentBuilder(document);

// Set the page size in the Word document.
var slideSize = presentation.SlideSize.Size;
builder.PageSetup.PageWidth = slideSize.Width;
builder.PageSetup.PageHeight = slideSize.Height;

// Set margins in the Word document.
builder.PageSetup.LeftMargin = 0;
builder.PageSetup.RightMargin = 0;
builder.PageSetup.TopMargin = 0;
builder.PageSetup.BottomMargin = 0;

const float scaleX = 2, scaleY = 2;

// Go through all the presentation slides.
foreach (var slide in presentation.Slides)
{
    // Generate a slide image and save it to a memory stream.
    using var image = slide.GetImage(scaleX, scaleY);
    using var imageStream = new MemoryStream();
    image.Save(imageStream, ImageFormat.Png);

    // Add the slide image to the Word document.
    imageStream.Seek(0, SeekOrigin.Begin);
    builder.InsertImage(imageStream.ToArray(), builder.PageSetup.PageWidth, builder.PageSetup.PageHeight);

    builder.InsertBreak(BreakType.PageBreak);
}

// Save the Word document to a file.
document.Save("output.docx");

The result:

Try our Online PPT to Word Converter to see what you could gain from converting PowerPoint and OpenDocument presentations to Word documents.

FAQs

What components need to be installed to convert PowerPoint and OpenDocument presentations to Word documents?

You only need to add the respective NuGet packages for Aspose.Slides for .NET and Aspose.Words for .NET to your C# project. Both libraries operate as standalone APIs, and there is no requirement for Microsoft Office to be installed.

Are all PowerPoint and OpenDocument presentation formats supported?

Aspose.Slides for .NET supports all presentation formats, including PPT, PPTX, ODP, and other common file types. This ensures that you can work with presentations created in various versions of Microsoft PowerPoint.