There are plenty of free online tools to convert PDF to PPT, but they all convert the text as well. In this way, the format will break and some complex contents like formulas cannot be perserved.
I just want to add some pages and adjust the order of some of the slides. That is to say, I do not need to edit anything in the PDF and hope to keep the identical formatting of the original file. The most simple way to do this is to make a screenshot of PDF and paste it into PPT for every page, but it will be very tiresome when there are lots of pages in PDF.
Is there a simple way to do this?