How to find the content.opf
in an EPUB file
The content.opf
file within an EPUB contains metadata about the book – like the title, the author, and the subject.
To find the content.opf
file, look for the mandatory META-INF/container.xml
file. This is a pointer to the content.opf
file. For example:
<?xml version="1.0"?>
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
<rootfiles>
<rootfile full-path="content.opf" media-type="application/oebps-package+xml"/>
</rootfiles>
</container>
See also: Anatomy of an EPUB 3 file