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

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

application/x-killustrator is a MIME type for files created with KIllustrator. It tells your system that the file contains vector-graphic data designed for illustration projects.

Files using this MIME type store elements such as shapes, layers, and gradients. The format is used by the KIllustrator application for creating and editing graphic designs.

Used in graphic design projects to manage vector images.
Stores detailed components like layers and colors.
Ensures the correct application is used to open and edit the file.
Helps with file organization and conversion in design workflows.

A typical file using this MIME type has the extension KIL. For more details, visit the linked resource.

Associated file extensions

.kil

Usage Examples

HTTP Header

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


    Content-Type: application/x-killustrator

HTML

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


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

Associated file extensions

.kil

FAQs

What application is required to open application/x-killustrator files?

This MIME type is specifically associated with KIllustrator, a vector graphics editor that was part of the early KDE KOffice suite. While the original software is largely obsolete, its successor, Karbon (part of the Calligra Suite), may still be able to import or open these legacy .kil files.

Can web browsers display application/x-killustrator content directly?

No, modern web browsers like Chrome, Firefox, and Edge cannot natively render KIllustrator files. If a web server sends a file with the application/x-killustrator header, the browser will typically prompt the user to download the file rather than displaying the vector graphics inside the window.

How do I configure an Apache server to serve .kil files correctly?

To ensure your Apache server sends the correct Content-Type header for KIllustrator files, add the following line to your .htaccess file or main configuration: AddType application/x-killustrator .kil. This prevents the browser from misinterpreting the file as generic text or binary data.

Why does this MIME type begin with "x-"?

The prefix x- indicates that application/x-killustrator is a non-standard or experimental MIME type not officially registered with the IANA at the time of its creation. It was defined specifically for the proprietary format used by the KIllustrator application within the Linux/Unix ecosystem.

How can I convert a .kil file to a modern format like SVG?

Direct conversion tools are rare due to the age of the format. The most reliable method is to install a legacy version of KOffice or the Calligra Suite (specifically the Karbon application), open the .kil file, and use the Save As or Export function to save the project as a standard SVG (Scalable Vector Graphics) file.

Is the application/x-killustrator format compatible with Adobe Illustrator?

Generally, no. Adobe Illustrator does not natively support the KIllustrator format. To edit these files in Adobe software, you must first convert them to a compatible interchange format, such as PDF, EPS, or SVG, using KDE-based software.

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.