Ebooks file formats Ebooks can come in different formats. For the purposes of our project, we focus on the two mainstream formats widely adopted worldwide: PDF and EPUB.
EPUB (Electronic PUBlication) is an open file format for electronic publications. The first version, named OEBPS 1.0 (Open EBook Publication Structure) was approved in 1999 by the Open eBook Forum, which later became the International Digital Publishing Forum. EPUB 2.0 was released in 2010, followed in June 2014 by version 3, in which for the first time in the specifications were included accessibility features....