What is MIME type "application/vnd.openxmlformats-officedocument.presentationml.presentation"?

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.openxmlformats-officedocument.presentationml.presentation defines a format for slide presentations based on the Office Open XML standard. It packages text, images, multimedia, animations, and formatting into a single file that presentation software can open and edit.
Files such as PPTX are typical examples of this format. Similarly, files like PPSX start immediately in slideshow mode. The format also supports themes via files like THMX.

• Used by presentation programs like Microsoft PowerPoint and other Office Open XML editors
• Enables rich multimedia content integration and design consistency
• Follows open standards such as ISO 29500 and ECMA-376 for broader compatibility
• Supports cloud-based collaboration and editing workflows

For more details on the Office Open XML standard, see this reference.

Associated file extensions

.pptx, .ppsx, .thmx

Usage Examples

HTTP Header

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

    Content-Type: application/vnd.openxmlformats-officedocument.presentationml.presentation
  

HTML

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

    <a href="file.dat" type="application/vnd.openxmlformats-officedocument.presentationml.presentation">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.openxmlformats-officedocument.presentationml.presentation');
      res.end('Content here');
    }).listen(3000);
  

Associated file extensions

.pptx, .ppsx, .thmx