XDoc.PowerPoint
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Tech Specs
How-to C#
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C# PowerPoint How-Tos

PM > Install-Package XDoc.PowerPoint

Overview Install Get to Start Basic SDK Concept Formats Supported Load, Save PPTX Preview PPTX PowerPoint Conversion Document, Slides Process Annotate PowerPoint Text Search Edit Images PowerPoint Thumbnail

C# PowerPoint Library
C# PowerPoint - Convert PowerPoint to PNG, BMP, and other raster images


Online C# Tutorial for How to Convert PowerPoint to Raster Images, .NET Graphics, and REImage



RasterEdge.com provides C# developers with mature PowerPoint document processing and rendering library SDK. Our XDoc.PowerPoint allows C# developers to perform high performance conversions from PowerPoint document to multiple image forms. Besides raster image Jpeg, images forms like Png, Bmp, Gif, .NET Graphics, and REImage (an intermediate class) are also supported. In the following parts, we provide some examples for these PowerPoint conversions.


C# Sample Code for PowerPoint to Png

You can use this sample code to convert PowerPoint file to Png image. 

// Load a PowerPoint file.
String inputFilePath = Program.RootPath + "\\" + "1.pptx";
PPTXDocument doc = new PPTXDocument(inputFilePath);

// Get the first page of PowerPoint file.
PPTXPage page = (PPTXPage)doc.GetPage(0);

// Convert the first PowerPoint page to a PNG file.
page.ConvertToImage(ImageType.PNG, Program.RootPath + "Output.png");


C# Sample Code for PowerPoint to Bmp

Or use this piece of C# code to implement PowerPoint to Bmp conversion. 

// Used to register all DLL assemblies.
WorkRegistry.Reset();

// Load a PowerPoint file.
String inputFilePath = Program.RootPath + "\\" + "1.pptx";
PPTXDocument doc = new PPTXDocument(inputFilePath);

// Get the first page of PowerPoint file.
PPTXPage page = (PPTXPage)doc.GetPage(0);

// Convert the first PowerPoint page to a BMP file.
page.ConvertToImage(ImageType.BMP, Program.RootPath + "\\Output.bmp");


C# Sample Code for PowerPoint to Gif

You can also directly change PowerPoint to Gif image file in C# program. 

// Used to register all DLL assemblies.
WorkRegistry.Reset();

// Load a PowerPoint file.
String inputFilePath = Program.RootPath + "\\" + "1.pptx";
PPTXDocument doc = new PPTXDocument(inputFilePath);

// Get the first page of PowerPoint file.
PPTXPage page = (PPTXPage)doc.GetPage(0);

// Convert the first PowerPoint page to a GIF file.
page.ConvertToImage(ImageType.GIF, Program.RootPath + "\\Output.gif");


C# Sample Code for PowerPoint to REImage

Instead, you may render PowerPoint to REImage (an intermediate class) and then do further manipulations. In order to run the demo code, you need use namespace "RasterEdge.Imaging.Raster.Core"; 

// Used to register all DLL assemblies.
WorkRegistry.Reset();

// Load a PowerPoint file.
String inputFilePath = Program.RootPath + "\\" + "1.pptx";
PPTXDocument doc = new PPTXDocument(inputFilePath);

// Get the first page of PowerPoint.
PPTXPage page = (PPTXPage)doc.GetPage(0);

// Convert the first page to a REImage object.
REImage image = new REImage(page.ConvertToImage());

// Do something ...


C# Sample Code for PowerPoint to .NET Bitmap

Moreover, our SDK also allows you to render PowerPoint to .NET Bitmap in C# programming. 

// Used to register all DLL assemblies.
WorkRegistry.Reset();

// Load a PowerPoint file.
String inputFilePath = Program.RootPath + "\\" + "1.pptx";
PPTXDocument doc = new PPTXDocument(inputFilePath);

// Get the first page of PowerPoint.
PPTXPage page = (PPTXPage)doc.GetPage(0);

// Render the page to a Bitmap with default setting.
Bitmap bitmap1 = page.GetBitmap();
bitmap1.Save(inputFilePath + "_1.bmp");
//  ...

// Enlarge the page with factor 2.
float zoomRatio = 2.0F;
Bitmap bitmap2 = page.GetBitmap(zoomRatio);
bitmap2.Save(inputFilePath + "_2.bmp");
//  ...

// Render the page with a resolution of 300 dpi.
int targetResolution = 300;
Bitmap bitmap3 = page.GetBitmap(targetResolution);
bitmap3.Save(inputFilePath + "_3.bmp");
//  ...