How to convert ppt/pptx to multipage png?

Question

Images

I have a need to convert many files from ppt/pptx format to multi-page png. There are a lot of different software, online services, but doing it manually is boring. All presentations appear in a folder and I would like to automatically convert them using the scheduler through the console. There are windows, there is freebsd, a Windows scheduler and Unix cron, there is php and the ability to install some kind of Windows software. What do you recommend FROM FREE options? Phrases like "don't be stingy, this program only costs $758" don't work. A server with a network share on Windows, so the Windows command line solution is more attractive.

Answer 1

Multipage png? Are you sure? It happens? Right?
PS: I don't know about multi-page png, but tiff and pdf can be done with imagemagic. There is a command line utility, there are versions for any OS.