What is MIME type "audio/vnd.nokia.mobile-xmf"?

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

audio/vnd.nokia.mobile-xmf defines an audio file format used mainly on Nokia mobile devices.
It specifies files that include Extensible Music Format data. The format stores musical instructions alongside audio samples. It enables dynamic, interactive playback in a compact file size.

Main use case: Mobile ringtones and notification sounds.
Supports interactive and synchronized playback of sound events.
Optimized for low-memory devices with fast performance.

Files of this type usually have the extension XMF. This MIME type tells programs how to interpret and play the file’s content.
For more on MIME types, see the MIME type basics.

Associated file extensions

.xmf

Usage Examples

HTTP Header

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


    Content-Type: audio/vnd.nokia.mobile-xmf

HTML

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


    <a href="file.dat" type="audio/vnd.nokia.mobile-xmf">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', 'audio/vnd.nokia.mobile-xmf');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.xmf

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.