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

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

application/x-mako is a MIME type for text files that mix static content with embedded Python code. They are processed by the Mako templating engine to generate dynamic text, like HTML or emails.

Template processing: The file contains code that runs during runtime.
Dynamic content generation: It blends fixed text with program logic.
Web development: It helps create pages with content that changes on the fly.

Files using this format typically have the extension MAO.

The "x-" prefix indicates that the type is experimental or non-standard. For more details, see Mako Templates.

Associated file extensions

.mao

Usage Examples

HTTP Header

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


    Content-Type: application/x-mako

HTML

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


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

Associated file extensions

.mao

FAQs

What is the application/x-mako MIME type?

This MIME type identifies source files for the Mako templating engine, a library used with Python. These files mix static text (like HTML) with embedded Python code to generate dynamic web pages or emails.

Which file extension is associated with application/x-mako?

The most common file extension is .mao. However, developers may sometimes use .mako or even standard extensions like .html or .txt depending on their project configuration.

How do I open a .mao file?

Since application/x-mako files are plain text, you can edit them using any code editor such as Visual Studio Code, Sublime Text, or Notepad. To execute the code inside, you must run the file through the Mako Python library.

Why does my browser download the file instead of displaying the page?

Web browsers cannot execute Python code or render Mako templates directly. If the server sends the raw file as application/x-mako, the browser defaults to downloading it. The server must process the template first and send the result as text/html.

Is it safe to serve application/x-mako files to the public?

No, you should generally not serve raw template files to the public. Doing so exposes your source code and internal logic, which can lead to security vulnerabilities. Configure your server to block direct access to .mao files.

What does the 'x-' prefix mean in this MIME type?

The x- prefix indicates that application/x-mako is a non-standard or experimental subtype. It is not officially registered with the IANA but is used by convention among developers to identify Mako files.

How do I configure Apache to recognize this type?

To associate the extension with this MIME type, add AddType application/x-mako .mao to your httpd.conf or .htaccess file. Remember, this is usually for internal identification, not for serving files to clients.

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.