One of the main problems that PDFs have is that they are difficult to edit. For this reason, if you need to make a presentation, converting PDF to PowerPoint becomes a good ally by letting you get a .ppt file, one of the most used extensions for such presentations.
Don’t forget that the process is completely reversible. That is, you will also be able to convert PowerPoint to PDF, as well as do other types of conversions, such as ODT to PDF. It will be up to you to select the best tool for each case.