What is MIME type "application/vnd.visionary"?

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

application/vnd.visionary is a vendor-specific MIME type. It defines the structure for files used by a specialized application that handles its unique data format.

This MIME type tells compatible software how to interpret and render the file’s contents. It ensures that layouts, graphics, or embedded information are processed correctly.

Main use case: Storing design or project data in a proprietary format.
Usage scenarios: Saving work within the dedicated application, exporting graphics, and archiving design elements.
Key fact: The associated file extension is VIS.

The MIME type helps software verify that the file is complete and in the right format. For more technical details, see the IANA registration or check resources on MIME types at MDN Web Docs.

Associated file extensions

.vis

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.visionary

HTML

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


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

Associated file extensions

.vis

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.