Email this to a friend

Print this article

This page was last updated on January 22, 2010

Mozilla Firefox is a powerful browser. It offers many kinds of customizations and features. But like Opera and Internet Explorer, it does not offer native support for Web Archive files (also known as MHT files). In Opera or Internet Explorer you can save the entire page, including the HTML, Javascript and any images etc into a single Web Archive files. But Mozilla Firefox does not offer native support for MHT files.

But owing to the highly customizable nature of Firefox, you can add MHT functionality to Firefox in no time. What you need to do is download an add-on called unMHT (https://addons.mozilla.org/en-US/firefox/addon/8051) and install it in Firefox. This add-on will add the Save as MHT and Save all tabs as MHT in the File menu of Firefox. Now you can save any page or all pages open in tabs of Firefox to a web archive MHT file.

The problem with unMHT Firefox add-on is that, by default, it allows you to save files only. If you double-click on any of the saved MHT files, it opens in Internet Explorer. Its no fun to use Firefox to save the MHT files and then to have to open them using Internet Explorer. You can associate MHT files with Firefox so when you double-click on MHT files, they open in Firefox instead of Internet Explorer. To associate MHT files with Firefox follow these steps :

On Windows XP:

1. Make Firefox your default browser (Its pointless to associate only MHT files to Firefox). To make Firefox your default browser, Open Tools • Options • Advanced in Firefox and click on Check Now. When asked choose Yes.
2. Download the following file assoc_mht_ff.zip, extract it to a folder.
3. Double click on assoc_mht_ff.reg and when asked choose Yes
4. Enjoy viewing MHT files in Mozilla Firefox.

On Windows Vista / 7

1. Open Control Panel · Programs · Default Programs. Click on Associate a file type with a program as shown.
   
2. In the list select .mht extension, then click on Change Program as shown.
   
3. In the window that pops up, select Firefox and click on OK.
4. Enjoy viewing MHT files in Mozilla Firefox.