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FreeSpire.Presentation 11.4.0

.NET Library for Processing PowerPoint Documents

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Free Spire.Presentation for .NET is a Community Edition of the Spire.Presentation for .NET, which is a totally free PowerPoint API for commercial and personal use.

As a standalone C#/VB.NET library, developers can use Free Spire.Presentation for .NET to create, read, write, modify, convert and print PowerPoint documents from any .NET (C#, VB.NET, ASP.NET, .NET Core) platform.

Standalone .NET API

Free Spire.Presentation for .NET is a totally independent .NET PowerPoint API which doesn't require Microsoft PowerPoint to be installed on system.

Support PowerPoint Version

• PPT - PowerPoint Presentation 97-2003
• PPS - PowerPoint SlideShow 97-2003
• PPTX - PowerPoint Presentation 2007/2010/2013/2016/2019
• PPSX - PowerPoint SlideShow 2007, 2010

Support Rich PowerPoint Elements

Free Spire.Presentation for .NET supports to process a variety of PowerPoint elements, such as slide, text, image, shape, table, chart, watermark, animation, header, footer, comment, note, SmartArt, hyperlink, OLE object, audio and video.

High Quality File Conversion

Free Spire.Presentation for .NET allow developers to convert PowerPoint documents to other file formats such as:

• Convert PowerPoint to PDF
• Convert PowerPoint to Image
• Convert PowerPoint to PPTX
• Convert PowerPoint to XPS
• Convert PowerPoint to SVG
• Convert PowerPoint to HTML

Convert PowerPoint to PDF/XPS/HTML in C#

 //create PPT document
 Presentation presentation = new Presentation();
 //load PPT file from disk
 presentation.LoadFromFile("ppt.ppt");

 //save the PPT do PDF file format
 presentation.SaveToFile("ToPdf.pdf", FileFormat.PDF);
 System.Diagnostics.Process.Start("ToPdf.pdf");

 //save the PPT document to XPS file format
 ppt.SaveToFile("source.xps", FileFormat.XPS);
 System.Diagnostics.Process.Start("source.xps");

 //Save the PowerPoint document to HTML format
 ppt.SaveToFile(@"E:\Program Files\ToHtml.html", FileFormat.Html);

Convert PowerPoint to Images in C#

 //load a PPT file
 Presentation presentation = new Presentation();
 presentation.LoadFromFile("sample.pptx");

 //traverse the slides of PPT files
 for (int i = 0; i < presentation.Slides.Count; i++)
 {
 //save the slide to Image
 Image image = presentation.Slides[i].SaveAsImage();

 String fileName = String.Format("result-img-{0}.png", i);
 image.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);

 //view the image
 System.Diagnostics.Process.Start(fileName);

Convert PowerPoint to SVG in C#

 //load a PPT file
 Presentation ppt = new Presentation();
 ppt.LoadFromFile(@"C:\Users\Administrator\Desktop\sample.pptx");

 Queue svgBytes = ppt.SaveToSVG();
 int len = svgBytes.Count;
 for (int i = 0; i < len; i++)
 {
 FileStream fs = new FileStream(string.Format("result" + "{0}.svg", i), FileMode.Create);
 byte[] bytes = svgBytes.Dequeue();
 fs.Write(bytes, 0, bytes.Length);
 ppt.Dispose();