Technical MIME Specification & Web Server Guide

application/x-icon

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

File Extension

.icon

Content-Type Header

application/x-icon

Format Category

General Files

Standard Specification

IANA Registered Standard

Description & Usage

Binary or text file format identified by extension .icon

HTTP Server Content-Type Configuration Code

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

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 .icon files is "application/x-icon". Web servers use this header to instruct browsers how to render or process .icon data.