What is MIME type "image/x-psd"?

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

image/x-psd is the MIME type for Adobe Photoshop image files. These files store layered image data and editing history in a non-destructive way.

Main use: Allows detailed image editing with separate layers, masks, and effects.
Graphics work: Used by designers and photographers to keep high-quality image information.
Technical advantage: Retains adjustments and color profiles for print and web outputs.
Flexibility: Supports complex compositions and fast re-editing.

The common file format for this MIME type is PSD. For further details on file properties, you can visit external file extension references.

Associated file extensions

.psd

Usage Examples

HTTP Header

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


    Content-Type: image/x-psd

HTML

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


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

Associated file extensions

.psd

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.