OpenDocument Format (ODF) is a computer file format for word processors, presentation software and other computer programs. For example, OpenOffice.org and LibreOffice are programs that use ODF to save text, slideshows and spreadsheets. The format was created by Sun Microsystems for their StarOffice office suite.
The content of an ODF file are XML files that are inside a ZIP. By using ZIP compression, the files are much smaller.
The most common filename extensions used for OpenDocument documents are:
.odt and .fodt for word processing (text) documents.ods and .fods for spreadsheets.odp and .fodp for presentations.odg and .fodg for graphics.odf for formula, mathematical equationsThe OpenDocument format was published as a standard by the International Standards Organization in 2015 as ISO/IEC 26300-1:2015.
Oasis Open maintains a Technical Committee for maintaining and extending the OpenDocument format.