PPTX vs ODP: PowerPoint vs LibreOffice Presentation Formats

PPTX (PowerPoint Open XML) and ODP (OpenDocument Presentation) are both ZIP-based XML presentation formats, but they serve different ecosystems. PPTX is the Microsoft standard, supported universally. ODP is the open ISO standard, native to LibreOffice.

Use PPTX when: sharing with business audiences, submitting to conference organisers, or using Google Slides / Microsoft 365 collaboration features.

Use ODP when: working exclusively within LibreOffice, sharing with organisations that mandate ODF, or archiving presentations in a vendor-neutral format.

Both formats are cross-compatible with partial fidelity: PPTX opens in LibreOffice, and ODP opens in PowerPoint — but custom animations, themes, and complex effects may render differently. For maximum compatibility, always share PPTX as it has the broadest support.