Convert OpenDocument Presentations (ODP) in C#

Overview

Aspose.Slides for .NET provides a robust API for converting OpenDocument (ODP) presentations to various other formats. Following a similar approach used for PowerPoint (PPT and PPTX) files, developers can easily export ODP documents to formats like HTML, PDF, TIFF, JPG, XPS, and more.

These examples show how to convert ODP documents to other formats (just change the source to ODP file):

For instance, converting an ODP presentation to PDF requires just a few lines of code in C#:

using (Presentation presentation = new Presentation("presentation.odp"))
{
    presentation.Save("presentation.pdf", SaveFormat.Pdf);
}

OpenDocument Presentation in Different Applications

When an OpenDocument presentation (ODP) file is opened in PowerPoint, it may not retain the original formatting from the application in which it was created. This happens because the OpenDocument presentation app and the PowerPoint app offer different features and rendering behaviors.

Here are some of the differences:

  • In PowerPoint, tables are typically rendered last and may overlay other shapes, regardless of their order on the ODP slide.
  • Picture fill for ODP tables is not supported in PowerPoint.
  • Text vertical rotation (270°, stacked) and distributed alignment are not supported in LibreOffice/OpenOffice Impress.
  • Picture fill, gradient fill, and pattern fill for text are not supported in LibreOffice/OpenOffice Impress.

MS PowerPoint and LibreOffice/OpenOffice Impress also handle lists differently. An ODP file created in PowerPoint may not display correctly in LibreOffice/OpenOffice Impress, and vice versa.

The image below shows how a list appears when created in LibreOffice Impress:

ODP list example

Aspose.Slides saves ODP lists in a way that ensures they are displayed correctly in LibreOffice/OpenOffice Impress.

Learn more about the OpenDocument format and PowerPoint.

FAQs

What if the formatting of my ODP file changes after conversion?

ODP and PowerPoint use different presentation models, and some elements—like tables, custom fonts, or fill styles—may not render exactly the same. It is recommended to review the output and adjust layout or formatting in code if needed.

Do I need OpenOffice or LibreOffice installed to use ODP conversion?

No, Aspose.Slides for .NET is a standalone library and does not require OpenOffice or LibreOffice to be installed on your system.

Can I customize the output format during ODP conversion (e.g., set PDF options)?

Yes, Aspose.Slides provides rich options for customizing the output. For example, when saving to PDF, you can control compression, image quality, text rendering, and more through the PdfOptions class.

Is Aspose.Slides suitable for server-side or cloud-based ODP processing?

Absolutely. Aspose.Slides for .NET is designed to work in both desktop and server environments, including cloud-based platforms like Azure, AWS, and Docker containers, without any UI dependencies.

Convert PowerPoint in C# | HTML, PNG, PDF, Word, TIFF