Which MIME types are related to file extension ".axd"?

The .axd file extension is associated with 2 MIME types:

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

About .axd Files

AXD files are specialized files used in ASP.NET environments to manage dynamic server responses.
They are created and processed by the web server rather than being standard documents you open manually.
They often handle tasks such as serving dynamically generated content and displaying debug or trace details.

ASP.NET Resource Delivery: They transmit resources like JavaScript, images, or CSS files using HTTP handlers.
Debugging and Tracing: They offer real-time debug information (for example, via trace.axd) for web applications.
HTTP Request Handling: They execute routines on special HTTP requests, which helps manage application behavior.

They are associated with MIME types application/x-aspx (indicating processed ASP.NET content) and text/plain (usually showing raw handler data).
Programs like web browsers and development tools such as Visual Studio work with these files in the context of web server processes.
According to FilExt.com, AXD files play a crucial role in controlling and delivering dynamic content within ASP.NET web applications.

Relationship between file extension and MIME type

A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.

File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.

File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.

Associated MIME types

application/x-aspx, text/plain

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 can one extension have multiple MIME types?

Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.