Convert PowerPoint to PDF in C#

Converting PowerPoint presentations to PDF preserves slide layout in a fixed output format for sharing and archiving.

Use this workflow when you need to:

• Distribute slides to recipients without presentation software dependencies
• Preserve formatting across devices and platforms
• Store presentation output in a stable format

Prepare the project

Register the SDK license before running conversion operations. For setup details, refer to the getting started with .NET SDK guide.

using GdPicture14;

LicenseManager licence = new LicenseManager();
licence.RegisterKEY("");

Create the document converter

Instantiate GdPictureDocumentConverter:

using GdPictureDocumentConverter converter = new GdPictureDocumentConverter();

Load the PowerPoint document

Load the source PPTX file:

converter.LoadFromFile(@"input.pptx");

For available converter methods, refer to the API reference guide.

Convert to PDF

Save the loaded presentation as PDF:

converter.SaveAsPDF(@"output.pdf");

Handle errors

LoadFromFile and SaveAsPDF return GdPictureStatus values. Use those values in your error handling flow. For status-handling patterns, refer to the handling errors with .NET SDK guide.

Conclusion

This guide converts a PPTX presentation to PDF for consistent output across environments.