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

The .hh file extension is associated with 4 MIME types:

text/x-c++hdr, text/x-c++src, application/x-httpd-php, application/octet-stream.

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

About .hh Files

HH files are files that serve different purposes based on their MIME type.

C++ Code: When labeled with text/x-c++hdr or text/x-c++src, they are used in C++ development. They may hold class declarations, function prototypes, and macros. These files are openable in text editors and programming IDEs such as Visual Studio Code, Code::Blocks, or Sublime Text.

Web Scripting: With the MIME type application/x-httpd-php, an HH file can contain Hack or PHP code. This use is common in web environments that process server-side scripts.

Binary Data: The application/octet-stream MIME type marks HH files as generic binary files. In this case, they are used to store data like the HammerHead Rhythm Station pattern in specialized music software.

Main use: C++ header/source code for development.
Alternate use: Web application code (Hack/PHP).
Niche use: Binary data for music pattern storage.

Based on information from FilExt.com, the .hh extension adapts to different contexts, so its functionality depends on the software and project requirements.

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

text/x-c++hdr, text/x-c++src, application/x-httpd-php, application/octet-stream

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.