What is MIME type "image/x-raw-nikon"?

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

The MIME type image/x-raw-nikon identifies raw image files produced by Nikon cameras.
It marks files that store unprocessed sensor data directly from the camera. This unedited data offers flexibility during post-processing.
Files of this type require specialized software to convert them to standard formats like JPEG or TIFF.

Detailed Editing: Preserve full image data to adjust white balance, exposure, and contrast with high precision.
Non-destructive Workflow: Allow modifications without losing the original image information.
Archival Quality: Serve as a high-quality archive ideal for professional photography.

They are associated with raw formats such as NEF and NRW.
For more technical details on raw image formats, visit this resource.

Associated file extensions

.nef, .nrw

Usage Examples

HTTP Header

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


    Content-Type: image/x-raw-nikon

HTML

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


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

Associated file extensions

.nef, .nrw

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.