Package File & Cover Graphics

Every eBook requires a package file (.opf file) to be converted into Reader format. This file contains important data that is read by the Reader conversion tools. It determines, among other things, where the user will find the book's contents, images, and other information. The Open eBook Standard requires a package file for each eBook, but, depending on the tool you use to convert print books to eBooks, this file may be generated for you. If the conversion tool you are using does not generate its own .opf files, you must create your own. Use the sample file below and the explanations of the various elements to help you create your .opf files.

Package files are XML-style files that always follow the format shown below. Like all XML files, package files are largely lower-case throughout (the exceptions are the various "dc:Metadata" tags).

The following is a sample package file for Charles Dicken’s Great Expectations.

Click for more detail about each section of the package file:

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