What is MIME type "image/x-gimp-gbr"?

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

image/x-gimp-gbr is a MIME type for files that store brush data. It is used by the GIMP image editor to load and apply custom brush shapes.

This format holds details like brush size, spacing, and texture. The data influences how strokes, textures, and painting effects appear. The prefix x- shows it is a non-standard type but widely adopted by GIMP.

Main use: It defines brush patterns that GIMP uses for digital painting.
Used in brush files like GBR for single brushes.
Also used in package files like GPB that contain multiple brushes.
Helps digital artists achieve consistent effects with custom patterns.

Learn more about GIMP brushes at GIMP official site.

Associated file extensions

.gbr, .gpb

Usage Examples

HTTP Header

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


    Content-Type: image/x-gimp-gbr

HTML

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


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

Associated file extensions

.gbr, .gpb

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.