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

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

application/x-sylk is the MIME type for files using the SYLK format. These files hold spreadsheet data in plain text, making them easy to exchange between programs.
The format signals software to parse the file as tabular data. It is often used for simple data export and import processes.

Exchanging data between spreadsheet and database applications
Importing table data into various software tools
Maintaining compatibility with legacy systems that handle text-based data

Files in this format are usually saved with the extensions SYLK or SLK.
For further details, see external resources like Wikipedia on SYLK.

Associated file extensions

.sylk, .slk

Usage Examples

HTTP Header

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


    Content-Type: application/x-sylk

HTML

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


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

Associated file extensions

.sylk, .slk

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.