Open eBook

Open eBook Publication Structure (OEBPS)Filename extension| `.opf`

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Internet media type| `application/oebps-package+xml[1]`
Developed by| Open eBook Forum
Initial release| 1999; 27 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Open eBook (OEB), or formally, the Open eBook Publication Structure (OEBPS), is a legacy e-book format which has been superseded by the EPUB format.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).

## Contents

* 1 Specification release history
* 2 Reader software
* 3 Reader devices
* 4 See also
* 5 References
* 6 External links

## 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. http://www.idpf.org/2007/opf/OPF_2.0_final_spec.html#Section2.0.
2. ↑ Judge, Paul (1998-11-16), "E-Books: A Library On Your Lap", BusinessWeek, archived from the original on February 8, 2000, https://web.archive.org/web/20000208053039/http://www.businessweek.com/1998/46/b3604010.htm
3. ↑ http://esupport.sony.com/US/perl/swu-download.pl?upd_id=3623&mdl=PRS505 Sony Reader PRS-505
4. ↑ Intel Reader
5. ↑ Barnes & Noble Nook
6. ↑ Kobo Reader
7. ↑ "Audiobook and eMagazine library". https://ibookhive.com/.

## 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)

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