Format comparison

PPTX vs PPT

How do PPTX and PPTcompare? Here's everything you need to know to choose the right format — and how to convert between them.

Office Open XML Presentation

PPTX is the default format for Microsoft PowerPoint presentations. It supports slides, animations, transitions, speaker notes, and multimedia content for creating professional presentations.

Microsoft PowerPoint Presentation (Legacy)

PPT is the legacy binary format for Microsoft PowerPoint presentations. While replaced by PPTX, many older presentation files and templates still use this format.

SpecificationPPTXPPT
Full nameOffice Open XML PresentationMicrosoft PowerPoint Presentation (Legacy)
Extension.pptx.ppt
MIME typeapplication/vnd.openxmlformats-officedocument.presentationml.presentationapplication/vnd.ms-powerpoint
CategoryDocumentDocument
DeveloperMicrosoftMicrosoft
Year introduced20071987

PPTX advantages

  • Rich multimedia and animation support
  • Industry standard for presentations
  • Compatible with Google Slides and Keynote
  • Supports templates and themes

PPTX limitations

  • Large file sizes with embedded media
  • Formatting varies between platforms
  • Complex format for simple slideshows
  • Animation support inconsistent outside PowerPoint

PPT advantages

  • Compatible with older PowerPoint versions
  • Widely recognized
  • Still supported by modern software
  • Simple for basic presentations

PPT limitations

  • Larger files than PPTX
  • Binary format — harder to recover
  • Missing modern features
  • Being phased out

Which should you use?

PPTX and PPT serve different purposes. PPTX is ideal for business presentations, while PPT excels at opening legacy presentations.

Best uses for PPTX

Business presentations
Educational lectures and courses
Sales pitches and proposals
Conference talks

Best uses for PPT

Opening legacy presentations
Compatibility with older systems
Archived presentation files
Simple slideshows

Convert between PPTX and PPT

Need to switch formats? Convert for free with SquishConvert.