MHTML File Documentation

Overview

Feature Value
File Extension .mht, .mhtml
MIME Type message/rfc822
Primary Usage Web Page Archive
Supports HTML Yes
Supports CSS Yes
Supports JavaScript Limited
Includes Resources Images, CSS, JavaScript
Encoding Base64, Quoted-Printable
Created by World Wide Web Consortium (W3C)
Compatibility Web Browsers (varies)
Editable With specific software or text editors
Compression No inherent compression
Multi-page Support No
Open Format Yes
Security Can contain malicious code
Conversion To and from HTML, PDF, etc.
Accessibility Varying, depends on the content
Storage of Resources Inlined within the document
Advantages Single file, easy to share
Disadvantages Potential for large file size
Typical Use Case Archive, share complex web pages