EPub
Definition
ePub is a popular open e-book standard.
“".epub" is the file extension of an XML format for reflowable digital books and publications. ".epub" is composed of three open standards, the Open Publication Structure (OPS), Open Packaging Format (OPF) and Open Container Format (OCF), produced by the IDPF.” (dipf, retrieved 22:38, 26 February 2009 (UTC))
Software and Formats
ePub can be authored and read with an increasing set of software. Since it is an open standard, it does have support from various vendors and publishers (see e.g. Tim O'Reilly Unplugged: The Kindle 2 And Transforming Industries).
Formats
The ePub Specification comes in two parts:
- The Open Publication Structure 2.0 (OPS) is an XML-based standard for authoring digital publications. Contents can be marked up either with a subset of XHTML or Daisy DTBook.
- The Open Packaging Format (OPF) 2.0 describes the structure of an .epub in XML
- The OPS Container Format 1.0 (OCF) is a zip-based standard used to encapsulate publication components for transport and delivery.
ePub contents may be DRM controlled, but must not ...
Authoring software
“Web-standard formats such as XHTML make up the core of OPS. OPS files can be created using a wide variety of Web and eBook publishing tools. They can also be created using XML editors such as Altova’s XML Spy. Adobe InDesign CS3 supports the direct generation of OCF-packaged OPS content as an export function. OCF files can also easily be created using standard ZIP applications like WINZIP” (IDPF FAQ, retrieved 22:38, 26 February 2009 (UTC).
Reader Software
Most readers support several e-book formats and several support ePub. See also: EPUB at mobileread.com and Wikipedia's Comparison of e-book formats.
There exist several readers. Here are just some of these:
- FBReader e-book reader for Unix/Windows computers. It supports several formats.
- calibre is a one stop solution to all your e-book needs. It is free, open source and cross-platform in design and works well on Linux, OS X and Windows.
- OpenBerg, was an opensource initiative to write a system (reader, authoring etc.). The reader was a Firefox extension. Now dead ?
- Adobe Digital Editions (This is a a free extension that install within Acrobat reader)
- Lexcycle Stanza (favorite free iPhone/iPod reader). Win/Mac/i*.
Links
- General
- EPUB (mobileread.com wiki)
- Official
- International Digital Publishing Forum (idpf, where the standards are defined)
- Contents
- Where to download ePub Books online. Several publishers are listed, but also free contents.
- Feedbooks (free contents)