What Is EPUB File Structure

Q

What Is the EPUB file structure?

✍: FYIcenter.com

A

An EPUB file is actually a ZIP archive file that contains the following types of files in sub-folders:

  • HTML, image and audio files for book contents.
  • CSS files for presentation.
  • OPF files for book structure and navigations.
  • Other resource and meta files.

Here is a list of files and sub-folders in a very simple EPUB file:

|-- mimetype
|-- package.opf
|-- content.xhtml
|-- navigation.xhtml
|-- META-INF
    |-- container.xml

EPUB specification is developed by the W3C EPUB 3 Community Group. Here is a list of EPUB versions and their release dates:

Version      Release Date
----------   ------------
EPUB 3.3     Draft
EPUB 3.2     May  8, 2019
EPUB 3.1     Jan 25, 2017
EPUB 3.0.1   2014
EPUB 3.0     Oct 11, 2011
EPUB 2.0     2007

 

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2018-04-15, 818👍, 0💬