What is MIME type "application/x-ipynb+json"?

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

application/x-ipynb+json is the MIME type for Jupyter Notebook files. It signals that the file stores its data in JSON format.

Files of this type, such as IPYNB, hold a sequence of cells that can include code, text, and outputs. The design makes it easy for both humans and machines to read and process the document.

Interactive Computing: Enables execution of code cells and display of results.
Rich Documentation: Combines narrative text, equations, and visualizations.
Collaboration: Facilitates sharing of computational documents among researchers and developers.
Reproducibility: Helps in capturing experiments and data analyses for future use.

For more details on Jupyter Notebook, visit Jupyter's official site.
For additional information on MIME types, see MDN Web Docs.

Associated file extensions

.ipynb

Usage Examples

HTTP Header

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


    Content-Type: application/x-ipynb+json

HTML

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


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

Associated file extensions

.ipynb

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.