Convert PowerPoint Documents to Images Using C#

The Syncfusion .NET PowerPoint Library offers powerful and comprehensive APIs to convert a PowerPoint document into an image programmatically with a few lines of code and without Microsoft PowerPoint or interop dependencies. It allows you to convert an entire presentation into images or a single slide of a presentation into an image to provide the document’s preview or thumbnail or to print it.

• Convert PowerPoint presentation into images documentation.
• Explore examples of PowerPoint-to-image conversion.
• Convert PowerPoint presentation into images online demo.

How to convert a PowerPoint presentation to images in C#

1. Install NuGet package: Install the Syncfusion.PresentationRenderer.Net.Core NuGet package in your project.
2. Open PowerPoint document: Create a FileStream object to represent the input PowerPoint document.
3. Load in .NET PowerPoint Library: Create an IPresentation object by passing the FileStream object.
4. Convert PowerPoint to images: Convert the entire PowerPoint presentation into images using the RenderAsImages method and save the images to a FileStream object.

Here is an example of how to convert a PowerPoint presentation into images in C# using the Syncfusion .NET PowerPoint Library.

//Open an existing presentation.
using FileStream inputStream = new FileStream("Template.pptx", FileMode.Open, FileAccess.Read);
using IPresentation presentation = Presentation.Open(inputStream);

//Initialize PresentationRenderer.
presentation.PresentationRenderer = new PresentationRenderer();

//Render the PowerPoint presentation as image stream.
Stream[] imageStreams = presentation.RenderAsImages(ExportImageFormat.Png);

//Save the image streams to file.
for(int i =0; i<imageStreams.Length; i++)
{
    Stream imageStream = imageStreams[i];
    imageStream.Position = 0;
    using FileStream outputStream = new FileStream("Image" + i.ToString() + ".png", FileMode.Create, FileAccess.ReadWrite);
    imageStream.CopyTo(outputStream);
     imageStream.Dispose();
}

How to convert a PowerPoint slide to an image in C#

1. Install NuGet package: Install the Syncfusion.PresentationRenderer.Net.Core NuGet package in your project.
2. Open PowerPoint document: Create a FileStream object to represent the input PowerPoint document.
3. Load in .NET PowerPoint Library: Create an IPresentation object by passing the FileStream object.
4. Convert PowerPoint to images: Convert the entire PowerPoint slide into an image using the ConvertToImage method of ISlide and save the image to a FileStream object.

Here is an example of how to convert a PowerPoint slide to an image in C# using the Syncfusion .NET PowerPoint Library.

//Open an existing presentation.
using FileStream inputStream = new FileStream("Template.pptx", FileMode.Open, FileAccess.Read);
using IPresentation presentation = Presentation.Open(inputStream);

//Initialize PresentationRenderer.
presentation.PresentationRenderer = new PresentationRenderer();

//Render the PowerPoint slide as image stream.
using Stream imageStream = presentation.Slides[0].ConvertToImage(ExportImageFormat.Png);

//Save the image stream to file.
using FileStream outputStream = new FileStream("Image.png", FileMode.Create, FileAccess.ReadWrite);
imageStream.CopyTo(outputStream);