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

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

The MIME type application/x-xmind marks files used by the mind mapping tool XMind Pro. It tells your system and apps to treat these files as structured mind maps. These maps contain nodes, links, and notes that visually organize ideas.

This MIME type is key for software to open and process content correctly. The file is typically saved with the extension XMIND.

Brainstorming and idea organization – It formats creative maps for planning projects.
Project management – It supports outlining tasks and visual strategies.
Learning and presentations – It aids visual explanations and structured notes.

The MIME type helps maintain compatibility between software and files. More information is available on the XMind website.

Associated file extensions

.xmind

Usage Examples

HTTP Header

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


    Content-Type: application/x-xmind

HTML

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


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

Associated file extensions

.xmind

FAQs

What is the primary use of the application/x-xmind MIME type?

The MIME type application/x-xmind identifies files created by XMind, a popular mind mapping and brainstorming software. It ensures that the operating system recognizes the file as an XMind Workbook, typically ending with the .xmind extension, so it can launch the correct application to display the nodes, relationships, and charts.

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

To ensure Apache serves these files with the correct headers, add the following line to your .htaccess file or main configuration: AddType application/x-xmind .xmind. This prevents the browser from misidentifying the file as a generic binary or ZIP archive.

Why do .xmind files sometimes download as ZIP files?

Internally, XMind files are actually ZIP archives containing XML data and resources. If a web server is not configured with the specific application/x-xmind MIME type, it may detect the file header as a ZIP and serve it as application/zip. This can cause the browser to save it with a .zip extension, forcing the user to rename it back to .xmind to open it.

Can web browsers open application/x-xmind files natively?

No, standard web browsers like Chrome, Firefox, or Edge cannot render XMind mind maps natively. When a user navigates to a resource with this MIME type, the browser will trigger a download, expecting a desktop application like XMind Pro or a compatible viewer to handle the .xmind file.

What are the Nginx settings for application/x-xmind?

For Nginx servers, you should edit the mime.types file or your server block configuration. Add the entry application/x-xmind xmind; inside the types { ... } block. This ensures that Nginx sends the correct Content-Type header when delivering mind map files.

Is application/x-xmind a standard IANA MIME type?

The x- prefix indicates that this is a non-standard or experimental subtype, widely adopted by convention rather than a strictly standardized IANA registration. While application/vnd.xmind.workbook has been discussed in the past, application/x-xmind remains the de facto standard for identifying these files on the web.

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.