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

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

text/x-texinfo is a MIME type used for files written in Texinfo markup.
It marks plain text that contains commands and macros for structured documentation.

Documentation Generation: Texinfo files are processed to create manuals, info pages, and help documents.
Multi-Format Output: A single Texinfo source can be converted to multiple formats such as HTML, PDF, and plain text.
Cross-Reference Management: It supports linking of chapters, sections, and external resources, making complex documents easier to navigate.

Files with this MIME type often use the extensions TEXI and TEXINFO.
This type helps applications and systems know how to process the file content.
For more details, you may refer to GNU Texinfo Manual.

Associated file extensions

.texi, .texinfo

Usage Examples

HTTP Header

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


    Content-Type: text/x-texinfo

HTML

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


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

Associated file extensions

.texi, .texinfo

FAQs

What is the text/x-texinfo MIME type used for?

The text/x-texinfo MIME type identifies files written in the Texinfo documentation format, primarily used by the GNU Project. These files (usually ending in .texi or .texinfo) contain markup that allows a single source file to generate manuals in various formats, such as HTML, PDF, and Info.

How do I open or edit a text/x-texinfo file?

Since these files are plain text, you can open them with any standard text editor like Notepad, Vim, or Sublime Text. However, editors like GNU Emacs provide specialized modes with syntax highlighting and commands specifically designed for editing Texinfo source code.

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

To ensure Apache serves Texinfo files with the correct MIME type, add the following line to your .htaccess file or main configuration:
AddType text/x-texinfo .texi .texinfo
This prevents browsers from misinterpreting the file as generic text or binary data.

How do I add text/x-texinfo support to Nginx?

For Nginx, you need to update the mime.types file or the types block in your server configuration. Add the following line:
text/x-texinfo texi texinfo;
This instructs the server to associate the text/x-texinfo header with the specified file extensions.

Can web browsers render text/x-texinfo files directly?

No, web browsers do not render the formatted documentation from raw text/x-texinfo files. They will usually display the file as plain text, showing the raw markup commands. To view the document properly in a browser, the source file must be converted to HTML using a tool like makeinfo or texi2any.

Why does the MIME type start with 'x-'?

The x- prefix indicates that text/x-texinfo is a non-standard or private MIME type that has not been officially registered with the IANA. Despite the prefix, it is the widely accepted convention for identifying Texinfo files on the web and in email systems.

What is the difference between text/x-texinfo and application/x-latex?

While both formats are used for typesetting, text/x-texinfo is specifically designed for software documentation and emphasizes semantic structure for generating online help (Info files) and HTML. In contrast, LaTeX (often application/x-latex) is a general-purpose typesetting system used more broadly for scientific papers and books.

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.