Thread: Convert from epub3 to epub2 (yes, backwards)
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Old 05-15-2017, 08:43 AM   #21
Moonraker
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I had a great deal of trouble converting epub3 back to epub2. Following previous instructions on this forum I converted the epub to .zip and then edited the .opf file to change the package back to version 2.

But then I couldn't work out how to get my new .opf file back into the zip file so I could then change the extension back to .epub.

I finally succeeded without doing any zipping and editing by converting the epub3 to .azw in Calibre. Then using Calibre again I converted it to epub and low and behold discovered it was now epub2
Last edited by Moonraker; 05-15-2017 at 08:45 AM.
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