TextText-based

`text/richtext`

Richtext

Reference for text/richtext, an early MIME type for enriched text with basic formatting in email messages.

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Expected extensions: .rtx

HTTP Content-Type Header

HTTP Header

Content-Type: text/richtext; charset=utf-8

Associated File Extensions

.rtx

Quick Facts

MIME Type	text/richtext
Category	Text
Type	Text-based (human-readable)
Extensions	.rtx

Common Usage

text/richtext is a simple markup format defined in RFC 1341 for email messages with basic formatting. It predates HTML email and is rarely used today.

Most email clients have replaced it with text/html for rich formatting. It remains in the IANA registry for historical compatibility.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.rtx" type="text/richtext">

<!-- Or for script/media elements -->
<script type="text/richtext" src="file.rtx"></script>

Node.js

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

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

nginx

# nginx.conf — add to types block or use default
types {
    text/richtext  rtx;
}

# Or set for a specific location
location /api/ {
    default_type text/richtext;
}