pdf to emz conversion is in most cases searched by users that are exploring options how to recover graphics from PDF document and save it for example as EMZ file.
Many graphics editors nowadays can open/import PDF files, so it should not be hard to actually recover the graphics from PDF document, provided it has embedded pictures. EMZ format might not be supported in every tool though, so if you are interested in that format in particular, you have to use specific software or export the recovered graphics afterwards.
Updated: October 17, 2023