What is MIME type "application/x-speex"?

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

application/x-speex is a MIME type for audio files compressed with the Speex codec.
It reduces file sizes while keeping voice audio clear.
It is optimized for speech and voice transmissions.
Files with the SPX extension typically use this format.

Speech Optimization: Designed specifically to compress human voice.
Streaming Support: Ideal for real-time audio in VoIP and live communications.
Bandwidth Efficiency: Lowers data use without sacrificing intelligibility.
Container Compatibility: Commonly used within the Ogg container.

For additional technical details, visit Speex on Wikipedia.

Associated file extensions

.spx

Usage Examples

HTTP Header

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


    Content-Type: application/x-speex

HTML

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


    <a href="file.dat" type="application/x-speex">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/x-speex');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.spx

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.