Convert PPTX to PPT in Python

What this page is about

Convert PPTX to legacy PPT format in Python with Aspose.Slides for Python via Java. Includes a code example and notes on compatibility and protected files.

Overview

Aspose.Slides for Python via Java lets you convert a PPTX presentation to the legacy PPT format used by PowerPoint 97–2003 without Microsoft PowerPoint installed. Load the PPTX file and save it with the PPT output format, as shown below.

Convert PPTX to PPT

Load the source file with the Presentation class, then call Presentation.save with the output path and SaveFormat.Ppt.

The following example starts the Java virtual machine if needed and converts template.pptx to output.ppt using default options. Replace the paths with your own file names. The finally block releases the presentation resources even if saving fails.

import jpype
import asposeslides

if not jpype.isJVMStarted():
    jpype.startJVM()

from asposeslides.api import Presentation, SaveFormat

# Load the PPTX presentation.
presentation = Presentation("template.pptx")
try:
    # Save the presentation in PPT format.
    presentation.save("output.ppt", SaveFormat.Ppt)
finally:
    presentation.dispose()

The SaveFormat.Ppt argument selects the output format; changing the file extension alone does not convert a presentation. Keep the original PPTX file so you can return to it if a newer feature has no equivalent in PPT.

Convert PPTX to Other Formats

Aspose.Slides also supports other output formats. See the corresponding articles for format-specific options and examples:

• Convert PowerPoint to PDF in Python
• Convert PowerPoint to XPS in Python
• Convert PowerPoint to HTML in Python
• Save Presentations as ODP in Python
• Convert PowerPoint to PNG in Python

FAQ

Do all PPTX effects and features survive conversion to PPT?

Not always. The legacy PPT format does not support every feature available in PPTX. Some effects, objects, or behaviors may be simplified or displayed differently. Review the converted presentation in the intended viewer, especially when it contains newer PowerPoint features.

Can I convert only selected slides to PPT?

Saving to PPT writes the whole presentation. To convert selected slides, create a new presentation, remove its initial empty slide, clone the required slides into it, and save it as PPT. See Clone Slides in Python.

Can I convert a password-protected PPTX file?

Yes, if you provide the correct password when loading the source presentation. You can also configure protection for the output file. See Password-Protected Presentations.