What is MIME type "application/x-ms-etl"?

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

application/x-ms-etl is a MIME type for Event Trace Log files.
These files record system and application events on Windows. They capture detailed performance data and errors in real time.
This format is essential for diagnosing issues and monitoring system behavior.

Tracks and logs system performance data.
Assists in debugging and troubleshooting.
Records events from Windows services and applications.
Needs specialized tools to view and analyze the data.

Files with the extension ETL are associated with this MIME type.
For more details, visit the Microsoft Event Tracing documentation.

Associated file extensions

.etl

Usage Examples

HTTP Header

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


    Content-Type: application/x-ms-etl

HTML

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


    <a href="file.dat" type="application/x-ms-etl">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/x-ms-etl');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.etl

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.