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What Are MHT Files

MHT (or sometimes .mhtml) files are a type of web archive format.

Purpose

Complete Webpage Capture: MHT files bundle the HTML code, images, CSS, JavaScript and other resources of a webpage into a single file.

Offline Viewing: This allows a user to save a webpage and view a fully rendered version of it later, even without an internet connection.

How They Work

MHTML Encoding: The MHT format uses MIME encoding (the same technology used in email attachments) to combine multiple elements of a webpage within a single file.

Browser Compatibility: Internet Explorer was the primary browser that popularized saving pages as MHT files. Most other modern browsers can also open and display them.

Use Cases

Research: Saving articles, reference material or websites for offline use in areas with limited connectivity.

Web Scraping: Extracting a full webpage for parsing data.

Evidence: Archiving web pages for legal or documentation purposes.

Opening MHT Files

Browsers:

Internet Explorer, Microsoft Edge and most modern browsers support directly opening MHT files. All you have to do is double click the file.

Text Editors:

Since the underlying format is text based, you can use Notepad, TextEdit or similar software to view the raw source code of the MHT file.

Important Things

Security: Be cautious opening MHT files from unknown sources because they could potentially contain malicious scripts if the original source was compromised.

Editing: Editing MHT files directly can be tricky due to the encoding. Specialized tools or converting to HTML is sometimes necessary.

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