Document Creation Software Resources

I often work with other vectors in creating mine, but when i download them, they come as either .ai or .eps. Inskape recognizes neither, so I have to go online and find a converter, with mixed results. It is very frustrating to have to deal with that.

For example, what I would like to do is have a link to a fillable form that an unlimited number of employees of client companies can use to securely answer health questions and digitally sign off (preferably with their actual signature using a touchscreen) and then be able to download those signed forms in a batch to send to our carrier partners (such as BCBS, etc).

I have a translation or two to do that have a good amount of random marks on them and are PDFs. I was wondering if there's a good way to still convert these to Word documents while still preserving the formatting. I am not interested in the random marks, of course, but I am interested in the text.