# Comparison of Office Open XML and OpenDocument

This is a comparison of the Office Open XML document file format with the OpenDocument file format.

## Comparison

| File format | Office Open XML | OpenDocument |
| Based on a format developed by | Microsoft | StarDivision / Sun Microsystems |
| Predecessor file format | Microsoft Office XML formats | OpenOffice.org XML |
| Standardized by | Ecma International, ISO/IEC | OASIS, ISO/IEC |
| First public release date | 2006 | 2005 |
| First stable version | Ecma International Standard ECMA-376 Office Open XML File Formats 1st edition | OASIS OpenDocument Format for Office Applications (OpenDocument) v1.0 |
| Latest stable version | ISO/IEC IS 29500-1:2012—Office Open XML File Formats | OASIS Open Document Format for Office Applications (OpenDocument) v1.3 |
| Latest ISO/IEC standardised version | ISO/IEC IS 29500-1:2012—Office Open XML File Formats | ISO/IEC IS 26300-1:2015—Open Document Format for Office Applications (OpenDocument) v1.2 |
| Language type | Markup language (XML) | Markup language (XML) |
| XML schema representation | XML Schema (W3C) (XSD) and RELAX NG (ISO/IEC 19757-2) | RELAX NG (ISO/IEC 19757-2) |
| Expression of extensibility rules | NVDL (ISO/IEC 19757-4) | |
| Compression format | ZIP | ZIP |
| Container structure | Open Packaging Conventions (ISO/IEC 29500-2:2021) | ODF Package |
| Metadata format | Dublin Core (ISO 15836) | subset of Dublin Core and “urn:oasis:names:tc:opendocument:xmlns:meta” elements |
| Drawing language | DrawingML, VML | “urn:oasis:names:tc:opendocument:xmlns:drawing” elements and “urn:oasis:names:tc:opendocument:xmlns:svg-compatible” elements |
| Mathematical notation language | Office MathML (OMML) | Mathematical Markup Language (ISO/IEC 40314) |
| Change-tracking | supported | supported |
| Conditional formatting in spreadsheets | supported | supported |
| Spreadsheet formula language | part of the standard | based on OpenFormula |
| Macro language | application-defined | application-defined |
| Digital signatures | part of the standard | supported |
| Thumbnails | JPEG (ISO/IEC 10918) | PNG (ISO/IEC 15948) |
| Interchange of digital font information | Open Font Format (ISO/IEC 14496-22) | |
| PANOSE font specifications | part of the standard | |
| Filename extensions | docx, docm, xlsx, xlsm, pptx, pptm | odt, ods, odp, odg, odf |
| Internet media types | application/vnd.openxmlformats-officedocument.wordprocessingml.document application/vnd.ms-word.document.macroEnabled.12 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/vnd.ms-excel.sheet.macroEnabled.12 application/vnd.openxmlformats-officedocument.presentationml.presentation application/vnd.ms-powerpoint.presentation.macroEnabled.12 | application/vnd.oasis.opendocument.text application/vnd.oasis.opendocument.spreadsheet application/vnd.oasis.opendocument.presentation application/vnd.oasis.opendocument.graphics application/vnd.oasis.opendocument.formula |
| Application support | Office Open XML software | OpenDocument software |
| Standard licensing | ISO/IEC copyrighted free download Ecma copyrighted free download / copying allowed | ISO/IEC copyrighted free download OASIS copyrighted free download / copying allowed |
| Additional technology patent licensing | Reasonable and non-discriminatory licensing (RAND-Z) Microsoft Open Specification Promise (OSP) Microsoft Covenant Not to Sue (CNS) | Sun Microsystems intellectual property covenant IBM Interoperability Specifications Pledge |
| Implementations covered by patent license | Patent license covers conforming implementations | Patent license covers fully compliant implementations |
| File format | Office Open XML | OpenDocument |