What is MIME type "application/vnd.ms-pki.stl"?

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

The MIME type application/vnd.ms-pki.stl is a Microsoft format used in Public Key Infrastructure (PKI).
Files with this type use the extension STL and hold a Security Trust List—a collection of trusted digital certificates.

Certificate Management: Stores a verified set of digital certificates. This helps your system identify trusted entities and publishers.
Security Validation: Supports the verification of digital signatures. It ensures that software and communications come from reliable sources.
Windows Integration: Operates within Microsoft environments to maintain secure operations and certificate handling.

This format is specific to Windows and is not related to the 3D printing STL files used in modeling.
For more details, consult the Microsoft Public Key Infrastructure documentation or visit the MIME page on Wikipedia.

Associated file extensions

.stl

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.ms-pki.stl

HTML

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


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

Associated file extensions

.stl

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.