EPUB

EPUB is an open W3C format for distributing digital publications as a single file. It packages structured web content–primarily XHTML, CSS, SVG, images and fonts–with metadata, navigation and a defined reading order. Most EPUB publications are reflowable, allowing a reading system to adapt text to the screen and the reader’s font, spacing and colour preferences. The format also supports fixed layouts, media overlays, scripting, page lists and landmarks, but readers implement those features inconsistently. Container and Publication Structure An .epub file is an Open Container Format ZIP archive with the media type application/epub+zip. Its root mimetype file identifies the format, and META-INF/container.xml points to the package document. The package document contains the publication metadata, a manifest of resources and a spine that defines the default reading order. A separate XHTML navigation document provides the table of contents and can also include page and landmark navigation.…