Is there a freeware program to convert a big PDF (e.g. 200MB) PDF, to RTF, that is compatible with Windows 7?
From GUI apps, Calibre can convert PDFs to RTFs decently, but not perfectly - which is to be expected as conversion from PDF is usually more or less lossy. Earlier versions -
< 3.48 - work on Windows 7 from what I see, but might have worse support for conversion than current versions.
Other than that, I wouldn't expect wonders for system that has been out of maintenance for a while now.