Why save a presentation as PDF?
A PDF looks the same on every device, even without PowerPoint or the fonts you used. It's the safest way to send a deck to a client, upload slides to a course platform, or print handouts.
What is kept
- One PDF page per slide, at the slide's own size (16:9 or 4:3).
- Backgrounds, shapes, pictures, tables and text, in their places.
- Each slide as it looks once all its animations have played.
What isn't (yet)
- Speaker notes and hidden slides are left out, as when you present.
- Charts, SmartArt, video and effects such as shadows and 3D aren't drawn, and gradients become a flat colour. If your deck relies on them, export to PDF from PowerPoint itself (File › Save as › PDF) or paste the chart as a picture first.
- Old .ppt files need saving as .pptx first (PowerPoint or LibreOffice can do it).
After converting
Large decks with many photos can make big PDFs. Compress PDF shrinks them for email. To add slide numbers, use Page numbers; to put several decks in one file, Merge PDF.