ApplicationBinary

`application/zstd`

Zstandard

Reference for application/zstd, the MIME type for Zstandard compression offering a balance of speed and compression ratio.

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Expected extensions: .zst

HTTP Content-Type Header

HTTP Header

Content-Type: application/zstd

Associated File Extensions

.zst

Quick Facts

MIME Type	application/zstd
Category	Application
Type	Binary
Extensions	.zst

Common Usage

Zstandard (zstd), developed by Facebook, offers compression ratios comparable to zlib with much faster speeds. It is used in HTTP content encoding, Btrfs/ZFS filesystem compression, package managers, database storage engines, and as a modern replacement for gzip in many applications.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.zst" type="application/zstd">

<!-- Or for script/media elements -->
<script type="application/zstd" src="file.zst"></script>

Node.js

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

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

nginx

# nginx.conf — add to types block or use default
types {
    application/zstd  zst;
}

# Or set for a specific location
location /api/ {
    default_type application/zstd;
}