What is MIME type "application/vnd.contact.cmsg"?

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

application/vnd.contact.cmsg is a vendor-specific MIME type that marks files containing contact message data. It tells software that the content is structured for contact information and related details.

This format is used in systems where contact data needs to be exchanged or processed. It can include names, phone numbers, email addresses, and extra message details. The MIME type ensures that the correct program handles the file automatically.

Contact Exchange: Simplifies sharing contact details between apps.
Data Integration: Helps merge contact data seamlessly across systems.
Automated Processing: Makes it easy for software to recognize and process the data.

Files using this MIME type typically have the extension CDBCMSG.

Associated file extensions

.cdbcmsg

Usage Examples

HTTP Header

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


    Content-Type: application/vnd.contact.cmsg

HTML

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


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

Associated file extensions

.cdbcmsg

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.