A MHT file is a web archive file used to save everything on a web page into a single file (MHT file). By default it opens with Internet Explorer, but you can associate it with Opera browser which is much faster and more secure as compared to Internet Explorer. To associate MHT files with Opera web browser, follow these steps :
On Windows Vista / 7:
- Open Opera.
- Go to Tools → Preferences. Alternatively, You can also press Ctrl + F12.
- In the Preferences window, select section Advanced