What is MIME type "application/x-t3vm-image"?

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

application/x-t3vm-image is a MIME type used for compiled TADS 3 images. It is not a picture file but a container for game code and data that runs on a TADS 3 virtual machine.
This file bundles the text, logic, and resources needed for interactive fiction games. When you load it into a TADS 3 interpreter, the game comes to life on your PC.

Interactive Fiction: It packages the compiled code and narrative elements of a game.
Virtual Machine Execution: The file is designed to be run by the TADS 3 interpreter.
Portability: It allows games to run consistently on different PC systems.

Files with this MIME type typically use the extensions T or T3.
For additional details, please check external resources like File Extension Info.

Associated file extensions

.t, .t3

Usage Examples

HTTP Header

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


    Content-Type: application/x-t3vm-image

HTML

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


    <a href="file.dat" type="application/x-t3vm-image">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-t3vm-image');    
      res.end('Content here');    
    }).listen(3000);

Associated file extensions

.t, .t3

FAQs

What is an application/x-t3vm-image file?

This MIME type represents a compiled game file for TADS 3 (Text Adventure Development System). Despite the word "image" in the name, it is not a picture; rather, it is a virtual machine image containing the bytecode and resources for an Interactive Fiction game.

How do I open a file with the application/x-t3vm-image MIME type?

You need a TADS 3 interpreter (player) to run these files. Popular standalone interpreters include QTads, HTML TADS, and FrobTads. You can also play these games online if the website uses a web-based interpreter like Parchment.

Why is it called an "image" if it is a text-based game?

In this context, "image" refers to a memory image or executable binary state, similar to a disk image (ISO). The application/x-t3vm-image file contains the frozen state of the game program ready to be executed by the TADS Virtual Machine, distinct from visual graphics like image/jpeg.

How do I configure Apache to serve .t3 files correctly?

To ensure users download the game file instead of seeing garbled text in their browser, add this line to your .htaccess or server config: AddType application/x-t3vm-image .t3. This tells the server to identify the file as a TADS 3 application.

Can web browsers open application/x-t3vm-image files natively?

No, standard browsers like Chrome or Firefox do not have built-in support for TADS 3 files. If you navigate to a .t3 file directly, the browser will usually download it. To play it in-browser, the host site must implement a JavaScript interpreter.

What is the difference between .t and .t3 extensions?

The .t3 extension is the standard for the compiled, playable game file associated with application/x-t3vm-image. The .t extension is historically used for TADS source code files (text files written by the developer), though some systems may conflate the two.

Is it safe to run application/x-t3vm-image files?

Generally, yes. TADS 3 games run inside a sandboxed virtual machine, which restricts the game code from accessing your personal files or operating system critical areas. However, as with any download, you should ensure the file comes from a trusted source.

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.