From W3C Wiki
NOTE: THE MATERIAL ON THIS WIKI PAGE IS BEING MIGRATED ONTO THE WEB EDUCATION COMMUNITY GROUP'S DEDICATED WIKI PAGE, AT http://www.w3.org/community/webed/wiki/HTML/Mimetype/html.
text/html mime type is the recommended mime type for serving html documents. It is supported by all browsers since the beginning of html.
- Configuring Apache
- Configuring IIS
Usually when a file is having .htm or .html, it is being interpreted by the filesystems as an html file.
A proposed registration started on November 1992 by a discussion on the mailing list www-talk.