Open eBook

Open eBook (OEB), or formally, the Open eBook Publication Structure (OEBPS), is a legacy e-book format which has been superseded by the EPUB format. It was "based primarily on technology developed by SoftBook Press"^[2] and on XML. OEB was released with a free version belonging to public domain and a full version to be used with or without DRM by the publishing industry.

Open eBook Publication Structure (OEBPS)

Filename extension	.opf
Internet media type	application/oebps-package+xml[1]
Developed by	Open eBook Forum
Initial release	1999; 26 years ago (1999)
Latest release	Open eBook Publication Structure (OEBPS) 2.0 September 2007 (2007-09)
Type of format	e-Book file format
Contained by	OEB Package Format (ZIP)
Extended from	XML, defined subset of XHTML, CSS, Dublin Core
Extended to	EPUB electronic publication standard
Website	idpf.org

Open eBook is a ZIP file plus a Manifest file. Inside the package a defined subset of XHTML may be used, along with CSS and Dublin Core metadata. The default file extension is .opf (OEB Package Format).

Specification release history

• September 2007 – Open Publication Structure (OPS) 2.0, EPUB. Released, supersedes the OEBPS 1.2
• August 2002 – OEBPS 1.2 Recommended Specification Released
• June 2001 – OEBPS 1.0.1 replaces OEBPS 1.0
• September 1999 – Open eBook Publication Structure (OEBPS) 1.0 released

Reader software

• SoftBook
• Adobe Digital Editions
• FBReader – GPL e-book reader for Unix/Windows computers.
• Lexcycle Stanza
• Mobipocket
• Openberg Lector – cross-platform reader released under the GPL and based on Mozilla platform

Reader devices

• SoftBook
• Sony Reader – As of 2008^[update] the Sony Reader PRS-505 supports the EPUB file format.^[3]
• Intel Reader^[4]
• Barnes & Noble Nook^[5]
• Kobo eReader^[6]

^[7]

See also

• Comparison of e-book formats
• Open Packaging Conventions