ODT / ODF file format

.odt · .ods · .odp · package (ZIP variant) · introduced 2005 by OASIS

What is a ODT / ODF file?

OpenDocument Format (ODF) — .odt for text, .ods for spreadsheets, .odp for presentations — is the ISO-standard OASIS office format. Like DOCX it is a ZIP file containing XML, but the schema is much simpler. ODF is the default in LibreOffice and Apache OpenOffice.

Most readers reach this page after double-clicking a .odt file and finding their operating system unsure what to do with it. The good news: ODT / ODF is a well-understood format with mature tooling on every major platform. It is supported in one click by mainstream archivers on Windows, macOS, and Linux.

How to extract a ODT / ODF file

Opening a .odt file is straightforward on every modern operating system. The exact steps depend on which platform you are on:

On Windows

Locate the .odt file in File Explorer.
Right-click the file. If you have 7-Zip installed, choose 7-Zip → Extract Here. On Windows 11 the built-in extractor handles ZIP, 7z, RAR and several other formats directly through Extract All…
If prompted, pick a destination folder and click Extract.
The extracted files appear in a folder next to the original archive.

On macOS

Find the .odt file in Finder.
Install The Unarchiver from the Mac App Store, or Keka for both creating and extracting.
Right-click the file → Open With → The Unarchiver (or just double-click after Unarchiver is set as the default).
The extracted folder appears next to the archive.

On Linux

Use your file manager: right-click the archive → Extract Here (file-roller on GNOME, Ark on KDE).

On the command line, run one of:

7z x archive.odt    # works for almost any format

The files appear in the current directory.

How to create a ODT / ODF file

To pack files into a .odt archive, you typically need an archiver that supports writing this format. Not every tool can create every format — for example, only WinRAR can create real RAR files. The sidebar lists the software known to read and write ODT / ODF.

On the command line, the canonical create command is:

# Use 7-Zip, PeaZip, or the format's reference tool to create .odt files.

If you regularly create archives at scale, a dedicated archive automation suite can wrap this command in scheduled jobs, integrity checks, and offsite replication.

Strengths

Truly open and simple schema
ISO/IEC 26300
Vendor-neutral

Weaknesses and limitations

Microsoft Office support is partial
Less popular than DOCX in business

Typical use cases

LibreOffice documents
Government open-document mandates

Technical details

ODT / ODF uses the ZIP + XML algorithm and is identified on disk by the magic byte sequence 50 4B 03 04. The standard MIME type is application/vnd.oasis.opendocument.text. The format is an open specification and is free for any use.

Frequently asked questions

Is ODT / ODF safe to open?

Archive files are containers — they are only as safe as what they contain. A .odt from a trusted source is fine; one received from a stranger can hold malicious executables, scripts, or files engineered to exploit bugs in your archiver. Always keep your archiver updated, and never run unknown executables that come out of an archive. A safe workflow is to extract into a sandbox and scan the contents before opening anything.

What is the maximum file size?

Modern ZIP-based formats use the ZIP64 extension to support archives larger than 4 GB and individual files larger than 4 GB, up to 16 EB in theory. Older tooling that does not understand ZIP64 will report a corruption error on such files.

Can I password-protect a ODT / ODF?

Some archivers can wrap ODT / ODF files in an encrypted container, but the format itself does not always include built-in encryption. Check your archiver's documentation.

How does ODT / ODF compare to other formats?

See our format comparison pages such as ZIP vs 7z, ZIP vs RAR, and tar.gz vs tar.xz for side-by-side feature tables.