What is MIME type "text/rss"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

The text/rss MIME type designates files meant for RSS feeds.
It defines a text-based structure that communicates dynamic content, like news or blog updates.

It syndicates website content.
It allows feed readers to update users with the latest entries.
It helps deliver summaries along with links to full articles.

Though the standardized MIME type is application/rss+xml, files carrying RSS content often use this designation. For example, files with the RSS extension are processed to display XML-structured feed data correctly.
This format ensures that browsers and feed readers can efficiently parse and display continuous content updates. For more detailed technical information, see the RSS Specification.

Associated file extensions

.rss

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: text/rss

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="text/rss">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');    
    
    http.createServer((req, res) => {    
      res.setHeader('Content-Type', 'text/rss');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.rss

FAQs

Is text/rss the official MIME type for RSS feeds?

No, text/rss is considered an unofficial or legacy MIME type. The IANA standard for RSS feeds is actually application/rss+xml. However, many servers and feed readers still recognize and process text/rss correctly due to historical usage.

How do I configure Apache to serve .rss files as text/rss?

You can define this mapping in your .htaccess or server configuration file. Add the line AddType text/rss .rss to ensure files with the .rss extension are served with this specific header. Alternatively, using AddType application/rss+xml .rss is recommended for better standards compliance.

Why does my browser display the RSS feed as raw code?

Most modern browsers (such as Chrome and standard Firefox) have removed native support for rendering RSS feeds. They interpret text/rss or XML data as plain text or source code. To view the feed properly, you need to install a Feed Reader extension or use a dedicated news aggregator app.

How do I set up Nginx to handle the text/rss MIME type?

In your nginx.conf file or mime.types include file, look for the types block. Add the line text/rss rss; to map the extension. Remember to reload the Nginx service for the changes to take effect.

What happens if I use text/xml instead of text/rss?

Using text/xml or application/xml is perfectly acceptable and often preferred over text/rss. Since RSS is based on XML, feed readers are designed to parse generic XML types and identify the RSS structure inside the file automatically.

Are there security risks associated with text/rss files?

The file itself is static text/XML and does not execute code on the server, but the content usually contains HTML. Feed consumers must sanitize the content to prevent Cross-Site Scripting (XSS) attacks if the feed includes malicious JavaScript within the <description> or <content:encoded> tags.

Why does the W3C Feed Validator give a warning about text/rss?

The validator warns you because text/rss is not a registered media type with the IANA. To fix this warning and ensure maximum compatibility, configure your web server to deliver the feed with the Content-Type header application/rss+xml.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.