What is MIME type "application/its+xml"?

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

application/its+xml is a MIME type for XML files that include Internationalization Tag Set (ITS) data.
It embeds metadata into XML content to guide translation and localization without altering the document’s core structure.

Facilitates marking text segments as translatable or non-translatable.
Provides rules for language-specific formatting, such as punctuation and date/time formats.
Helps content management and localization tools process multilingual data effectively.
Supports the separation of content from cultural or regional formatting guidelines.

Files using this standard typically use the ITS file extension.
Additional details are available in the W3C ITS documentation.

Associated file extensions

.its

Usage Examples

HTTP Header

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


    Content-Type: application/its+xml

HTML

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


    <a href="file.dat" type="application/its+xml">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', 'application/its+xml');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.its

FAQs

What is the purpose of the application/its+xml MIME type?

This MIME type identifies XML documents that utilize the Internationalization Tag Set (ITS). These files contain metadata and rules used to assist translation tools in distinguishing between translatable text and technical code within an XML structure.

How do I open a file with the .its extension?

Because these are text-based XML files, you can view them in any code editor like VS Code, Sublime Text, or Notepad++. However, to utilize the localization rules defined in the file, you typically need specific Content Management Systems (CMS) or Computer-Assisted Translation (CAT) software.

How do I configure Apache to serve .its files correctly?

To ensure your Apache server sends the correct headers, add the following line to your .htaccess or global configuration file: AddType application/its+xml .its. This tells the server to associate the extension with the correct MIME type.

How do I set up Nginx for application/its+xml?

In your Nginx configuration (usually nginx.conf or inside mime.types), add the entry: application/its+xml its;. Reload the Nginx service afterwards to apply the changes.

Can web browsers render application/its+xml files?

Browsers generally treat this type as generic XML. Without an associated XSLT stylesheet, the browser will likely display the raw XML tree structure rather than a formatted page. It is not designed for direct visual rendering like HTML.

Is application/its+xml different from text/xml?

Yes, it is more specific. While text/xml or application/xml indicates generic XML data, application/its+xml explicitly signals that the content adheres to the ITS W3C standard for localization. This allows automated tools to dispatch the file to translation engines immediately.

Are there security risks associated with ITS files?

As with any XML-based format, files served as application/its+xml can be vulnerable to XML External Entity (XXE) attacks if processed by an insecure parser. Developers should disable external entity resolution when parsing ITS files from untrusted sources.

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.