What is MIME type "image/x-atari-duo"?

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-atari-duo designates disk image files for Atari systems. It preserves the full content and structure of original Atari disks. Files using this type include those with extensions such as DU1, DU2, and DUO.

The format captures low-level details like tracks and sectors. This accuracy is key for running software exactly as it did on vintage hardware.

Main use case: Emulating Atari disks on modern PCs.
Additional use case: Archiving and backing up classic Atari software.
Key fact: The image keeps the disk’s original structure intact, ensuring compatibility with specialized applications.

The image/x-atari-duo type is mainly used by retro computing enthusiasts and emulator developers. For further details on Atari file formats, visit filext.com.

Associated file extensions

.du1, .du2, .duo

Usage Examples

HTTP Header

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


    Content-Type: image/x-atari-duo

HTML

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


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

Associated file extensions

.du1, .du2, .duo

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.