ApplicationText-based

`application/x-www-form-urlencoded`

URL-Encoded Form Data

Reference for application/x-www-form-urlencoded, the default MIME type for HTML form submissions via POST requests.

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HTTP Content-Type Header

HTTP Header

Content-Type: application/x-www-form-urlencoded; charset=utf-8

Quick Facts

MIME Type	application/x-www-form-urlencoded
Category	Application
Type	Text-based (human-readable)

Common Usage

This is the default Content-Type for HTML form submissions. Form data is encoded as key=value pairs separated by ampersands, with special characters percent-encoded.

Used by login forms, search forms, and simple POST requests. For file uploads, multipart/form-data is used instead.

Code Examples

HTML

<!-- Set MIME type in meta or fetch headers -->
<meta http-equiv="Content-Type" content="application/x-www-form-urlencoded">

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('application/x-www-form-urlencoded');
  res.send(data);
});

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

nginx

# nginx.conf — add to types block or use default
types {
    application/x-www-form-urlencoded  urlencoded;
}

# Or set for a specific location
location /api/ {
    default_type application/x-www-form-urlencoded;
}