What is MIME type "application/illustrator"?

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

application/illustrator is the MIME type for Adobe Illustrator artwork. It signals that the file holds vector graphics data.

This type is used to work with high-quality, editable illustrations. It defines how software should read and display the file's content.

It supports scalable images without loss of resolution.
It preserves design layers and objects for further editing.
It is commonly used in design workflows for print and digital media.

The file associated with this MIME type is typically an AI file, popular in the graphic design community.

Associated file extensions

.ai

Usage Examples

HTTP Header

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


    Content-Type: application/illustrator

HTML

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


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

Associated file extensions

.ai

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.