Ebooks in OPF format (Open Packaging Format) can be easily converted to common EPuB ebooks with programs like Adobe Digital Editions or similar ebook handling programs and readers. Even some desktop document publishing solution may support opf to epub conversion, however, the format is somewhat old and support for it fades with each year.
Convert Open Packaging Format to Open Publication structure eBook.
We have found 3 software records in our database eligible for .opf to .epub file format conversion.
Microsoft Windows software - convert opf to epub on Windows
Electronic book viewer based on Flash, a successor to Adobe eBook Reader
Convert from opf file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned opf to epub. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Professional desktop document publishing software from Adobe
Apple macOS / Mac OS X software - convert opf to epub on OS X
Mac version od Adobe's popular document designing and publishing software