Open eBook

{{Infobox file format

| name = Open eBook Publication Structure (OEBPS)

| icon =

| screenshot =

| caption =

| extension = .opf

| mime = application/oebps-package+xml{{Cite web |url=http://www.idpf.org/2007/opf/OPF_2.0_final_spec.html#Section2.0 |title=Open Packaging Format (OPF) 2.0 v1.0|date=2007-09-11 |archive-date=2009-06-04 |archive-url=https://web.archive.org/web/20090604120716/http://www.idpf.org/2007/opf/OPF_2.0_final_spec.html#Section2.0 |access-date=2020-05-05 |url-status=dead }}

| magic =

| released = {{release date and age|1999}}

| standard =

| url = {{URL|http://www.idpf.org/|idpf.org}}

| logo =

| type code =

| uniform type =

| owner = Open eBook Forum

| latest release version = Open eBook Publication Structure (OEBPS) 2.0

| latest release date = {{release date|2007|09}}

| genre = e-Book file format

| container for =

| contained by = OEB Package Format (ZIP)

| extended from = XML, defined subset of XHTML, CSS, Dublin Core

| extended to = EPUB electronic publication standard

}}

Open eBook (OEB), or formally, the Open eBook Publication Structure (OEBPS), is a legacy e-book format which has been superseded by the EPUB format.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"{{Citation |last=Judge |first=Paul |title=E-Books: A Library On Your Lap |magazine=BusinessWeek |date=1998-11-16 |url=//www.businessweek.com/1998/46/b3604010.htm |url-status=dead |archiveurl=https://web.archive.org/web/20000208053039/http://www.businessweek.com/1998/46/b3604010.htm |archivedate=February 8, 2000 }} 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).