All about OXT Files

The OXT file type is primarily associated with LibreOffice.

OXTFile Extension OXT
File extension: OXT
File type:  plugin package

What is an OXT file

OXT files mostly belong to LibreOffice. OXT files are used as add-ons in office suites such as LibreOffice and OpenOffice. They are built as ZIP archives that package extra modules for extending the software’s capabilities.
They add extra functions like:
  • Language dictionaries
  • Templates
  • New toolbars
  • Additional features
  • FilExt.com tip: Use the built‐in extension manager in LibreOffice to install and manage these files. For more details, visit the LibreOffice website.

    How to open an OXT file

    You need a suitable software like LibreOffice to open an OXT file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your OXT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a OXT file directly in the browser:. Just drag the file onto this browser window and drop it.

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    Programs that open and convert OXT files:

    1. LibreOffice
      See the previous paragraphs to learn more about the main application. OXT files are often referred to as LibreOffice plugins because this type of file is primarily created or used by this software.
    2. OpenOffice.org (Extension) by OpenOffice.org Community
      An extension provides added abilities to OpenOffice.org products. They are managed using the Extension Manager from the Tools menu in any OpenOffice.org program. Related links: OpenOffice.org Extension Site

    OXT format details:

    Every file has a defined file format, i.e. how the data is arranged in the file. The file format can be determined based on the file extension and the signature (the first few characters of a file). Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. Knowledge is power - this also applies when dealing with unknown or faulty files. In the following you will find our evaluation of the OXT files:

    The OXT file type is mainly used by one program with a specific format. However, the following two file formats are common:

    All other OXT files (3%) have no uniform format. These files sometimes refer to grammalecte, dictionary, numbertext, turkish, import, czech, libre or pack. If you want to find out what your OXT file contains, drag and drop it onto this page.

    Technical Data for OXT File Extension

    File classification:
    Plugin
    Related files:

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: office.Extension.1
    EXEFile: %ProgramFiles%\OpenOffice.org 2.2\program\unopkg.exe gui

    ProgramID: office.Extension.1
    EXEFile: %ProgramFiles%\Sun\StarOffice 8\program\unopkg.exe gui

    ProgramID: office.Extension.1
    EXEFile: %ProgramFiles%\BrOffice.org 2.3\program\unopkg.exe gui

    ProgramID: ooostub.Extension.1
    EXEFile: %ProgramFiles%\Sun\OpenOffice.org Installer 1.0\ooostub.exe gui

    ProgramID: office.Extension.1
    EXEFile: %ProgramFiles%\openoffice aechivos\OpenOffice.org 3\program\soffice.exe -o

    ProgramID: office.Extension.1
    EXEFile: %ProgramFiles%\Sun\StarSuite 9\program\soffice.exe -o


    an oxt plugin package is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with OXT files

    • Associate the OXT file extension with the correct application.
    • Update your software that should actually open plugin packages. Because only the current version supports the latest OXT file format. Search, therefore, e.g. on the manufacturer website after an available LibreOffice update.
    • To make sure that your OXT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .OXT file online - secure, fast, and no downloads needed.
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