PDF, which stands for Portable Document Format, is a popular format for interchanging files. You can easily convert a PowerPoint 2016 presentation to PDF format by following these steps:
Choose File→Export→Create PDF/XPS Document.
Click the Create PDF/XPS button.
This brings up the dialog box shown here.
Creating a PDF document.Navigate to the location where you want to save the file, and change the filename if you wish.
The default is to save the file in the same folder as the PowerPoint presentation, using the same name but with the extension PDF.
Select the appropriate optimization setting.
The two choices are to optimize for standard use or to minimize the file size. The quality will be slightly reduced if you opt to minimize the file size.
Click Publish.
The presentation is converted to a PDF file.