Long story short, I want to build a system that reorders some components in a document file (be it a docx or odt, I don't have a hard constraint atm).

So my problem input should be a document file, and I need to be able to approximate the number of pages consumed by this document file, I also need to be able to get the height of individual components (like a single paragraph or a table) to have the data I need to rearrange so I can make the document have less pages.

I don't have a hard constraint on the programming language of the tool either (Python preferred), I prefer not embedding LibreOffice into my system.

Also I'm willing to hear other solutions (maybe my input is not the optimal thing I can use for this problem).

Thanks in advance!