title: What is the correct MIME type for a font file?
body: <p>I have not been able to find a canonical source that indicates the correct MIME type for any and/or each type of file format.  All the sources that I have found appear to contradict each other and/or the <a href="http://www.iana.org/assignments/media-types/index.html" rel="nofollow noreferrer">IANA MIME type RFCs and their associated list</a>.  </p>
  
  <p>While <strong>I am particularly interested in <code>.otf</code> (OpenType) and <code>.ttf</code> (TrueType) file types</strong>, an ideal answer would provide a canonical resource for determining the MIME types for a broad spectrum of font file formats, such as those listed on <a href="http://en.wikipedia.org/wiki/List_of_file_formats#Font_file" rel="nofollow noreferrer">the <strong>Font file</strong> section of the Wikipedia page: <strong>List of file formats</strong></a>.  However, given that I can't find such a resource, it seems entirely possible that no such canonical reference exists.</p>
  
  <p>I would like to further clarify that I am not looking for the <em>working MIME type</em>, but for the <em>canonical MIME type</em>.  The selected answer to  <a href="https://stackoverflow.com/questions/2871655/proper-mime-type-for-fonts">Proper MIME type for fonts</a> states that <code>font/opentype</code> can be used for <code>.otf</code> file.  However, as the highest voted answer (by @djsadinoff) explains, <code>font</code> is not a valid IANA content type and this cannot be the <em>correct</em> MIME type.</p>