What is MIME type "application/vnd.openofficeorg.extension"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

The MIME type application/vnd.openofficeorg.extension identifies packaged add-on files for OpenOffice. It tells your system that the file carries extra features for the office suite.

These packages offer new tools, templates, and enhancements. They are installed via OpenOffice's extension manager. The file is often a compressed archive with XML and other resources.

Main use: Add functionality to OpenOffice programs.
Key fact: It packages custom macros, toolbars, and templates.
Additional use: Enhance writing, spreadsheets, presentations, and drawing applications in OpenOffice.
Technical detail: Although similar to a ZIP file, the MIME type indicates a vendor-specific format.

The file typically uses the extension OXT.

Associated file extensions

.oxt

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: application/vnd.openofficeorg.extension

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="application/vnd.openofficeorg.extension">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');    
    
    http.createServer((req, res) => {    
      res.setHeader('Content-Type', 'application/vnd.openofficeorg.extension');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.oxt

FAQs

What is the application/vnd.openofficeorg.extension MIME type used for?

This MIME type represents OpenOffice Extension packages, which add functionality to the office suite. These files, typically ending in .oxt, contain templates, macros, or tools and are installed via the Extension Manager in OpenOffice or LibreOffice.

How do I configure Apache to serve OXT files correctly?

To ensure browsers recognize the file as an extension rather than a generic download, add the following line to your .htaccess file or server configuration: AddType application/vnd.openofficeorg.extension .oxt. This helps trigger the correct installation dialog on the client side.

Can I open an OXT file if I don't have OpenOffice installed?

You cannot install the extension without a compatible office suite, but you can inspect the contents. Since the format is based on ZIP compression, you can rename the file extension to .zip and extract it to view the internal XML configuration and resource files.

Why is my browser downloading the file as a ZIP instead of an extension?

This usually occurs if the web server is misconfigured and sends the generic application/zip MIME type instead of application/vnd.openofficeorg.extension. Correcting the server's MIME type settings will ensure the browser hands the file off to the OpenOffice application.

Is this MIME type compatible with LibreOffice?

Yes, LibreOffice generally supports the same extension format as OpenOffice. Both suites use the application/vnd.openofficeorg.extension type for add-ons, though specific feature compatibility depends on the version of the software being used.

How do I set the correct MIME type in Nginx?

In your nginx.conf or the mime.types file, add the entry inside the types block: application/vnd.openofficeorg.extension oxt;. Reload Nginx to apply the changes.

Are files with this MIME type safe to open?

You should exercise caution, as extensions often contain macros or executable scripts. Only install OXT files from trusted sources, such as the official extension repositories, to avoid potential security risks.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.