Technical MIME Specification & Web Server Guide

text/html

Technical overview, official IANA specification, header magic bytes, and server configuration snippets for .HTML files (HyperText Markup Language).

File Extension

.html

Content-Type Header

text/html

Format Category

Code & Web

Standard Specification

W3C HTML5 / RFC 2854

Description & Usage

Standard markup language for document structure on the World Wide Web.

HTTP Server Content-Type Configuration Code

# Nginx mime.types configuration for .html
types {
    text/html    html;
}

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 .html files is "text/html". Web servers use this header to instruct browsers how to render or process .html data.