There is a really nice utility for Mac called PDF to Keynote that is able to export presentations in PDF format (prepared for example in LateX) to Keynote's KEY presentation format.
Convert Adobe Portable document format to iWork Keynote '09 presentation.
We have found 2 software records in our database eligible for .pdf to .key file format conversion.
Apple macOS / Mac OS X software - convert pdf to key on OS X
PDF to Keynote converts PDF-based presentations (e.g., made using LaTeX and Prosper) into Apple's Keynote format.
Convert from pdf file
to key file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned pdf to key. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
PDF2Office for iWork converts PDF files into editable Pages, Keynote and Numbers files by recreating the layout of the document; forming paragraphs; applying styles; regrouping independent graphic elements; extracting images; creating tables; all automatically without any manual intervention.