Technical MIME Specification & Web Server Guide

application/x-javascript

Technical overview, official IANA specification, header magic bytes, and server configuration snippets for .JAVASCRIPT files (JAVASCRIPT File Format).

File Extension

.javascript

Content-Type Header

Format Category

General Files

Standard Specification

IANA Registered Standard

Description & Usage

Binary or text file format identified by extension .javascript

HTTP Server Content-Type Configuration Code

# Nginx mime.types configuration for .javascript
types {
    application/x-javascript    javascript;
}

OS Compatibility Matrix

Windows

macOS

Linux

Android

iOS

Want to test header signatures or binary files?

Run binary magic byte inspection in Magic Byte Detector.

Frequently Asked Questions

The official MIME content type for .javascript files is "application/x-javascript". Web servers use this header to instruct browsers how to render or process .javascript data.