According to the Internet Assigned Numbers Authority (IANA), all .ico file falls under the MIME type image/vnd.microsoft.icon
. (Source)
E.g.
<link rel="icon" type="image/vnd.microsoft.icon" href="favicon.ico" />
However, savvy internet guru, Paul Irish, claims this is wrong, and that it would actually be image/x-icon
. (Source)
E.g.
<link rel="icon" type="image/x-icon" href="favicon.ico" />
I know you can get away with not including a "type" for .ico files, but if you were going to include one, which should it be? Are there actually any problems with serving it as official IANA type?