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

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

application/x-kchart is the MIME type for files created by the KChart charting application. These files store structured chart data and design settings used to plot graphs and organize visual data. They include details such as axes, labels, styling, and data series.

The file using this MIME type is identified by the extension CHRT.

The format saves complete chart layouts.
It retains design parameters like colors, fonts, and grid settings.
It allows users to exchange or share charts with applications from the KDE office suite.

This type is specific to KChart and helps ensure that the chart data is correctly interpreted by compatible software. For more details about its usage and related tools, check the official KDE Office page.

Associated file extensions

.chrt

Usage Examples

HTTP Header

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


    Content-Type: application/x-kchart

HTML

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


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

Associated file extensions

.chrt

FAQs

What software opens files with the MIME type application/x-kchart?

These files are primarily created and opened by KChart, a tool included in the KOffice and Calligra Suite packages for the KDE desktop environment. To view or edit these files on Windows or macOS, you typically need to install a port of the KDE office applications.

How do I configure Apache to serve .chrt files correctly?

To ensure your Apache server identifies these files correctly, add the following line to your .htaccess file or main configuration: AddType application/x-kchart .chrt. This prevents the browser from treating the file as a generic binary stream.

Can web browsers render application/x-kchart files natively?

No, modern web browsers like Chrome, Firefox, and Edge do not have built-in support for rendering KChart files. When a user clicks a link to a file with this MIME type, the browser will usually download it rather than displaying it.

What does the "x-" prefix indicate in this MIME type?

The x- prefix stands for "experimental" or "extension," meaning application/x-kchart is a non-standard type not officially registered with the IANA. It is a vendor-specific type used exclusively within the KDE software ecosystem.

How do I add support for this MIME type in Nginx?

You can add support by editing your mime.types file or the types block within nginx.conf. Insert the line application/x-kchart chrt; and reload the server to ensure clients receive the correct headers when downloading .chrt files.

Is application/x-kchart a text or binary format?

KChart files are typically XML-based (often compressed), storing structured data about axes, labels, and data series. However, because they are specific to the KChart application, they should be handled as application types rather than generic text types.

General 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.