What is MIME type "image/x-canon-crw"?

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

image/x-canon-crw is a MIME type used for Canon raw image files from older digital cameras. It tells systems that the file holds unprocessed sensor data.

Files of this type, identified by the CRW extension, keep much of the original image details. They allow for extensive editing before final conversion.

• Main use: Capturing unedited image data for flexible, detailed post-processing.
• Key facts: It stores raw sensor data, preserving more information than standard formats.
• Practical usage: Requires specialized software to view and edit properly.

This MIME type is common in professional photography and by enthusiasts who want to adjust exposure, white balance, and color before creating a final image. For more details, see the CRW file extension page.

Associated file extensions

.crw

Usage Examples

HTTP Header

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

    Content-Type: image/x-canon-crw
  

HTML

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

    <a href="file.dat" type="image/x-canon-crw">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', 'image/x-canon-crw');
      res.end('Content here');
    }).listen(3000);
  

Associated file extensions

.crw