What is MIME type "model/x3d+fastinfoset"?

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

model/x3d+fastinfoset is a MIME type used to deliver 3D graphics data in a compact, binary format. It is a binary encoding of the X3D standard, which is normally an XML-based format. This means that data files are smaller and load faster compared to their plain XML versions.

Files using this MIME type come from the Extensible 3D (X3D) File Format Family. Examples include X3D, X3DB, X3DV, X3DBZ, X3DVZ, and X3DZ.

Main purpose: It compresses XML-based 3D scene data for faster network delivery.
Performance: The binary format reduces file size and parsing time.
Interactivity: It is used to present interactive and complex 3D scenes on various platforms.
Practical use: Software and web applications that render 3D content benefit from its efficiency.

For more details on standards and usage, consider visiting Web3D Consortium.

Associated file extensions

.x3d, .x3db, .x3dv, .x3dbz, .x3dvz, .x3dz

Usage Examples

HTTP Header

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


    Content-Type: model/x3d+fastinfoset

HTML

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


    <a href="file.dat" type="model/x3d+fastinfoset">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', 'model/x3d+fastinfoset');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.x3d, .x3db, .x3dv, .x3dbz, .x3dvz, .x3dz

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.