A MHTML file in the basic sense is nothing more than an archive containing all of images and text on a website. This archive format was created by Microsoft for Internet Explorer and therefore it is not supported by most other web browsers. If you use a different web browser or are looking to move to a different operating system such as Linux or Mac, you'll need to convert these files or they will not be recognized.
The MHTML Converter application was designed to be a very easy to use program designed to convert MHT or MHTML files into regular HTML files. All embedded images and css content will be extracted from the document. The MHTML Converter fully supports converting multiple files at once.