What is MIME type "application/x-ddoc"?

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

application/x-ddoc is a MIME type that signals a file used in digital signature technology. It designates a file that bundles a digital signature with its associated document content.

Files of this type—such as the DDOC—often follow digital signature standards used in secure document exchanges.

Primary Function: It wraps digital signature data together with a document. This ensures that any alterations are detectable.
Security: It supports verification processes to confirm a document’s authenticity and integrity.
Usage: It is employed by digital signature systems, often as part of electronic identification and secure document workflows.
Integration: Reader applications use this MIME type to apply the correct protocols for signature validation and document processing.

This MIME type directs software on how to handle files that contain embedded security information. It is integral for systems managing trust and verification. For more in-depth details on file types and their applications, visit Filext.

Associated file extensions

.ddoc

Usage Examples

HTTP Header

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


    Content-Type: application/x-ddoc

HTML

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


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

Associated file extensions

.ddoc

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.