How can I import docx and pdf newsletter content?

I have a monthly newsletter that I’d love to import as is to my site. It comes in .docx and .pdf

I’ve tried numerous tools for converting to HTML but the output when pasted into ghost is nothing at all like the original. it’s completely different.

Is there any way to develop or easily workaround (at high quality) to import the newsletter?

It takes a lot of work to build and if I could have it in my paid members, then that would really make my day.

Thanks so much - it will save me doing it twice and having different formats.