What is MIME type "application/vnd.ms-visio.drawing.macroenabled.12"?

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-visio.drawing.macroenabled.12 is used by Microsoft Visio to save drawing files that include macros. These files use an Office Open XML structure, which means they store diagram data in an XML format. This design makes the files easier to update and integrate with other modern software.

Macros inside these drawings can automate tasks and add interactive features. They allow custom routines to help update or modify diagrams as needed. Files saved in this format have the extension VSDM.

Primary Use: Storing complex diagrams and visual representations in Visio.
Macro Support: Running embedded code to automate drawing tasks and enhance functionality.
XML Structure: Based on Office Open XML, ensuring compatibility with modern software environments.
Enterprise Integration: Widely used in business settings for process flows, network diagrams, and technical schematics.

For more details on how these files work, check out the Microsoft Visio documentation and the Office Open XML overview.

Associated file extensions

.vsdm

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.ms-visio.drawing.macroenabled.12

HTML

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


    <a href="file.dat" type="application/vnd.ms-visio.drawing.macroenabled.12">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-visio.drawing.macroenabled.12');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.vsdm

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.