Office Open XML

"docx" redirects here. For other uses, see docx (disambiguation).
Not to be confused with OpenDocument, Open Office XML, or Microsoft Office XML formats.
Office Open XML
Office Open XML Document
The OOXML Document icon, as appears on the Microsoft OneDrive web service
Filename extension
.docx, .docm
Internet media type
application/vnd.
openxmlformats-officedocument.
wordprocessingml.
document[1]
Developed byMicrosoft, Ecma, ISO, IEC
Initial release7 December 2006; 17 years ago (2006-12-07)
Latest release
4th edition
26 October 2016; 8 years ago (2016-10-26)
Type of formatDocument file format
Extended fromXML, DOC, WordProcessingML
StandardECMA-376, ISO/IEC 29500
Open format?Yes[2]
WebsiteECMA-376, ISO/IEC 29500-1:2016
Office Open XML Presentation
Filename extension
.pptx, .pptm
Internet media type
application/vnd.
openxmlformats-officedocument.
presentationml.
presentation [3]
Developed byMicrosoft, Ecma, ISO, IEC
Initial release7 December 2006; 17 years ago (2006-12-07)
Latest release
3rd edition
29 June 2011; 13 years ago (2011-06-29)
Type of formatPresentation
Extended fromXML, PPT
StandardECMA-376, ISO/IEC 29500
Open format?Yes
WebsiteECMA-376, ISO/IEC 29500:2016
Office Open XML Workbook
Filename extension
.xlsx, .xlsm
Internet media type
application/vnd.
openxmlformats-officedocument.
spreadsheetml.
sheet[4]
Developed byMicrosoft, Ecma, ISO, IEC
Initial release7 December 2006; 17 years ago (2006-12-07) (as Microsoft Open XML)
Latest release
3rd edition
29 June 2011; 13 years ago (2011-06-29)
Type of formatSpreadsheet
Extended fromXML, XLS, SpreadsheetML
StandardECMA-376, ISO/IEC 29500
Open format?Yes
WebsiteECMA-376, ISO/IEC 29500:2016

Office Open XML (also informally known as OOXML)[5] is a zipped, XML-based file format developed by Microsoft for representing spreadsheets, charts, presentations and word processing documents. Ecma International standardized the initial version as ECMA-376. ISO and IEC standardized later versions as ISO/IEC 29500.

Microsoft Office 2010 provides read support for ECMA-376, full support for ISO/IEC 29500 Transitional, and read support for ISO/IEC 29500 Strict.[6] Microsoft Office 2013 and later fully support ISO/IEC 29500 Strict,[7] but do not use it as the default file format because of backwards compatibility concerns.[8]

  1. ^ "application/vnd.openxmlformats-officedocument.wordprocessingml.document". www.iana.org. IANA. 2011-02-25. Retrieved 2024-11-03.
  2. ^ Klaus-Peter Eckert; Jan Henrik Ziesing; Ucheoma Ishionwu. "Document Interoperability: Open Document Format and Office Open XML" (PDF). Fraunhofer Verlag. p. 90.
  3. ^ "application/vnd.openxmlformats-officedocument.presentationml.presentation". www.iana.org. IANA. 2011-03-14. Retrieved 2024-11-03.
  4. ^ "vnd.openxmlformats-officedocument.spreadsheetml.sheet". www.iana.org. IANA. 2011-03-16. Retrieved 2024-11-03.
  5. ^ "The Document Foundation, LibreOffice and OOXML". The Document Foundation. Retrieved 2016-03-22.
  6. ^ "Overview of the XML file formats in Office 2010". Office 2010 Resource Kit. Microsoft. 5 August 2011.
  7. ^ "XML file name extension reference for Office 2013". Office 2013 Resource Kit. Microsoft. 26 December 2016.
  8. ^ "XLSX Strict (Office Open XML), ISO 29500-1:2008-2016". Library of Congress. Retrieved 2018-09-09.