Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .mht

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .mht file?
  • Which program can create the .mht file?
  • Where can you find a description of the .mht format?
  • What can convert .mht files to a different format?
  • Which MIME-type is associated with the .mht extension?
Multipurpose Internet Mail Extension HTML .mht file icon

Multipurpose Internet Mail Extension HTML

MHT file is a Multipurpose Internet Mail Extension HTML. When you save a Web page as "Web archive" the Web page saves this information in Multipurpose Internet Mail Extension HTML (MHTML) format with a MHT file extension. All relative links in the Web page are remapped and the embedded content is included in the .mht file, rather than being saved in a separate folder.
Category: Document files
Application: Internet Explorer
Program name: iexplore.exe
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
mhtl, mhtm, mhtml, pptmhtml
Related extensions:
Active Server Page
Hypertext Markup Language Document
PHP Script
Cascading Style Sheets
Compiled HTML Help
JSP Markup Language
Answer Wizard Index
Dreamweaver Web Template File
Microsoft HTML Application

Other types of files may also use the .mht file extension. If you have helpful information about .mht extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Help and Support Center HHT
Derive Math File
Macro Scheduler Compiled Macro
Everio MediaBrowser 3D Edit Data
HighMAT File
MetadataTouch Template
Nimbus 7 SAMS MMRVT Data
Musicnotes Guitar Guru Song
HyperTerminal Settings

The .mht filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

myt (1), hht (1), mtt (1), mt (1), mmt (1), mhr (1), mh (1), mbt (1), kht (1), hmt (1), mut (1), mth (1), mnt (1), mjt (1), mhg (1)

Can't open a .mht file?

If you want to open a .mht file on your computer, you just need to have the appropriate program installed. If the .mht association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.mht

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android

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