Open eBook

Open eBook Publication Structure (OEBPS)

Filename extension	.opf
Internet media type	application/oebps-package+xml[1]
Developed by	Open eBook Forum
Initial release	1999; 25 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Open eBook (OEB), or formally, the Open eBook Publication Structure (OEBPS), is a legacy e-book format which has been superseded by the EPUB format.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 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

References

1. "Open Packaging Format (OPF) 2.0 v1.0". 2007-09-11. Archived from the original on 2009-06-04. Retrieved 2020-05-05.
2. Judge, Paul (1998-11-16), "E-Books: A Library On Your Lap", BusinessWeek, archived from the original on February 8, 2000
3. http://esupport.sony.com/US/perl/swu-download.pl?upd_id=3623&mdl=PRS505 Sony Reader PRS-505
4. Intel Reader Archived 2012-09-10 at archive.today
5. Barnes & Noble Nook
6. Kobo Reader
7. Audiobook and eMagazine library

External links

• Open eBook Forum
• Openberg
• Open Publication Structure (OPS) 2.0
• Adobe's Sample eBook Library
• Article "EPUB" at the MobileRead Wiki
• ePub Validator - This utility allows to validate the epub file to ePub standards of 1.0.5
• https://github.com/idpf/epubcheck
• EPUB Validator (beta)