What is MIME type "audio/mobile-xmf"?

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

audio/mobile-xmf is the MIME type used for the eXtensible Music File Format on mobile devices.
It holds musical instructions, similar to MIDI data, and can include embedded instrument definitions and sample data. These files are designed to be compact and efficient for devices with limited resources.

Efficient Playback: The format minimizes file size while carrying enough data for dynamic music playback.
Structured Audio Data: It stores musical sequencing along with potential instrument and sample information.
Mobile Use: Ideal for ringtones, game audio, and other mobile applications.

Files using this format are commonly identified by the extensions XMF and MXMF.
For more details on audio MIME types, visit IANA’s audio media types registry.

Associated file extensions

.xmf, .mxmf

Usage Examples

HTTP Header

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


    Content-Type: audio/mobile-xmf

HTML

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


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

Associated file extensions

.xmf, .mxmf

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.