What is MIME type "application/cwt"?

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

application/cwt is the MIME type for CBOR Web Tokens. These tokens package security claims in a compact binary form instead of plain text.

This format uses CBOR – a concise, efficient way to encode data. It is similar to JSON-based tokens but is smaller and faster to process. Files in this format are typically seen as CWT.

• Authentication: It carries identity and claim data in secure environments.
• Authorization: It is used to grant and verify access rights.
• Data Integrity: It helps ensure that the token’s content has not been altered.

The design focuses on efficiency and security. It is favored in systems with limited resources such as IoT devices and mobile apps.

For more technical details, see the IETF draft on CBOR Web Tokens.

Associated file extensions

.cwt

Usage Examples

HTTP Header

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

    Content-Type: application/cwt
  

HTML

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

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

Associated file extensions

.cwt