Why convert a presentation to PDF at all
A PDF locks in the exact layout, fonts, and formatting so it looks the same on any device, regardless of whether the recipient has PowerPoint, Keynote, or matching fonts installed. It is the standard choice for sharing a presentation when you do not want it edited or when the reader will not open it in the original software.
What gets lost in the conversion
Animations, slide transitions, and embedded video playback are lost in a PDF, since a PDF is a static document. If those elements matter for your presentation, keep the original file for live presenting and only use the PDF version for reading or printing.
Frequently Asked Questions
Will my fonts and formatting look the same in the PDF?
Generally yes, since exporting to PDF embeds font information directly into the file, unlike opening the original file on a device that lacks the same fonts installed. It is still worth spot-checking the converted file before sending it.
Is there a file size limit when using an online converter?
Most free online converters cap file size, commonly somewhere in the range of tens of megabytes, so a presentation with many high-resolution images or embedded video may need to be converted using the original desktop software instead.