What is MIME type "application/vnd.ms-powerpoint.template.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-powerpoint.template.macroenabled.12 defines a file used as a template in Microsoft PowerPoint that supports embedded automation code. This type permits custom macros to run when a presentation is created from the template.

Files of this type work by offering a preformatted base with design elements and embedded macro routines that can automate tasks or enhance functionality. They are based on the Office Open XML format used in modern versions of PowerPoint. The file format is associated with the extension POTM.

Provides a foundation for new presentations with preset designs.
Integrates macros for automating repetitive tasks.
Facilitates consistency across multiple presentations.
May pose security risks if macros come from unreliable sources.

Learn more about MIME types at IANA Media Types.

Associated file extensions

.potm

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.ms-powerpoint.template.macroenabled.12

HTML

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


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

Associated file extensions

.potm

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.