AudioBinary

`audio/webm`

WebM Audio

Reference for audio/webm, the WebM audio container format using Opus or Vorbis codecs for web audio.

MIME Type Detector

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Expected extensions: .webm

HTTP Content-Type Header

HTTP Header

Content-Type: audio/webm

Associated File Extensions

.webm

Quick Facts

MIME Type	audio/webm
Category	Audio
Type	Binary
Extensions	.webm

Common Usage

WebM audio uses Opus or Vorbis codecs in a Matroska-based container optimized for the web. It is used in browser-based audio applications, WebRTC communications, web-based music players, and HTML5 audio elements alongside other format fallbacks.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.webm" type="audio/webm">

<!-- Or for script/media elements -->
<script type="audio/webm" src="file.webm"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('audio/webm');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'audio/webm' });

nginx

# nginx.conf — add to types block or use default
types {
    audio/webm  webm;
}

# Or set for a specific location
location /api/ {
    default_type audio/webm;
}