Converting PDF/Word Docs into Help Center articles

Hello,

We just started our subscription and I'm tasked with migrating our existing documentation to the Help Center.  These exist almost entirely as multipage PDF or Word Docs with lots of screenshots.  I'm having a great deal of trouble finding out how to convert these into Help Center content without a great deal of hassle (basically reconstructing each image by image - ack!)

I could just attach them as files but that's basically just a file repository and we'd like the content actually in the Help Center articles.  Doing a straight copy/paste strips out any images.

I'm sure I'm not the first person needing to do such a basic task but I can't find much in the existing support threads.  I'm hoping I'm just overlooking something.

Thanks!