ODF - Specifications

Specifications

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
  • .odb for databases
  • .odg and .fodg for graphics
  • .odf for formulae, mathematical equations

The original OpenDocument format consists of an XML document that has as its root element. OpenDocument files can also take the format of a ZIP compressed archive containing a number of files and directories; these can contain binary content and benefit from ZIP's lossless compression to reduce file size. OpenDocument benefits from separation of concerns by separating the content, styles, metadata, and application settings into four separate XML files.

There is a comprehensive set of example documents in OpenDocument format available. The whole test suite is available under the Creative Commons Attribution 2.5 license.

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