What is MIME type "application/x-emf"?

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

application/x-emf is the MIME type for files in the Extended Metafile format. This format stores drawing commands rather than a pixel grid. It records instructions to render both vector graphics and bitmap images.

Files using this MIME type, like EMF files, are common on Windows systems. They help maintain image quality when scaling or printing because they can be redrawn at different sizes.

Used for saving complex graphics that mix shapes and text.
Ensures clear output in printing and document embedding.
Employed in Windows drawing and diagram applications.
Retains quality when images are resized.

For more detailed information, visit this reference on the Enhanced Metafile format.

Associated file extensions

.emf

Usage Examples

HTTP Header

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


    Content-Type: application/x-emf

HTML

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


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

Associated file extensions

.emf

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.