application/vnd.openxmlformats-officedocument.presentationml.presentation
The MIME type for modern PowerPoint (.pptx) — Open XML inside a ZIP.
Typical extensions
Primary uses
- Sales decks, webinar materials
- Cloud Office workflows
In a browser
Downloads by default; Microsoft 365 and Google Slides render inline.
On a server
Static delivery. Embedded videos can push files into hundreds of megabytes.
In email
Delivered as an attachment — watch attachment-size limits.