MultipartText-based

`multipart/mixed`

Mixed Content

Reference for multipart/mixed, the MIME type for messages containing multiple independent parts with different types.

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HTTP Content-Type Header

HTTP Header

Content-Type: multipart/mixed; charset=utf-8

Quick Facts

MIME Type	multipart/mixed
Category	Multipart
Type	Text-based (human-readable)

Common Usage

multipart/mixed is the default multipart type for email messages with attachments. Each part has its own Content-Type and is independent.

Used in email (text body + file attachments), HTTP batch requests, and any scenario combining different content types in one message.

Code Examples

HTML

<!-- Set MIME type in meta or fetch headers -->
<meta http-equiv="Content-Type" content="multipart/mixed">

Node.js

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

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

nginx

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

# Or set for a specific location
location /api/ {
    default_type multipart/mixed;
}