To convert a PDF to an ePub, you have to pick some program to do the conversion. No program will do the PDF > ePub without errors. Not even Adobe Acrobat can do it error free. Then you have to take the resulting ePub and A/B compare the text 100% to make sure no errors get past due to the conversion. And finally, you have to then format the ePub.
That is a lot of work and the larger the PDF, the more work it is. A/B comparing can be rather tedious.
To convert a Word document, you have to save it as filtered HTML. Then you convert it to ePub and remove all of the garbage that Word put in and that too can sometimes be a lot of work. You have to edit the CSS and remove everything that's not needed and should not be there. Also, there can be garbage in the XML files as well that needs to go or be modified.
As for the DRM, I can have the DRM stripped from your ePub in the time it takes for Calibre to store the ePub in it's database.
Last edited by JSWolf; 10-16-2012 at 06:44 PM.