What is MIME type "text/x-csrc"?

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

text/x-csrc is a MIME type indicating plain text files that follow C language syntax rules. It is used by tools and editors to recognize source code files, enabling features like syntax highlighting and proper formatting.

This classification tells applications that the file’s content is code, not binary data. The “x-” prefix marks it as experimental or non-standard but is widely adopted in practice.

• Syntax Highlighting: Editors use it to apply C-based color schemes and formatting.
• Source Code Recognition: It signals that the file contains code written in C or similar languages.
• Toolchain Integration: Compilers and development tools treat these files as editable text.

Files using this MIME type span many extensions. Typical examples include C files, H header files, as well as files specific to variants like HC (HolyC), MC (Monkey C), GSC, and ISPC. Other extensions—such as PM, XPM, XBM, CL, OPENCL, and others—are also managed under this umbrella when their syntax adheres to C-style rules.

This MIME type is crucial for development environments because it ensures that files with C-like code are handled correctly, even if they come from different programming traditions or domains. For further reading on MIME types, visit Wikipedia: MIME.

Associated file extensions

.h, .hc, .mc, .gsc, .pm, .xpm, .csc, .d, .c, .xbm, .xs, .nss, .idc, .cl, .xc, .upc, .cats, .gsh, .h.in, .ispc, .opencl, .smithy

Usage Examples

HTTP Header

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

    Content-Type: text/x-csrc
  

HTML

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

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

Associated file extensions

.h, .hc, .mc, .gsc, .pm, .xpm, .csc, .d, .c, .xbm, .xs, .nss, .idc, .cl, .xc, .upc, .cats, .gsh, .h.in, .ispc, .opencl, .smithy