url: data

 
 4.8 data
 ========
 
 The ‘data’ scheme, defined in RFC 2397, contains MIME data in the URL
 itself.  Such URLs have the form
 
      data:[MEDIA-TYPE][;BASE64],DATA
 
 MEDIA-TYPE is a MIME ‘Content-Type’ string, possibly including
 parameters.  It defaults to ‘text/plain;charset=US-ASCII’.  The
 ‘text/plain’ can be omitted but the charset parameter supplied.  If
 ‘;base64’ is present, the DATA are base64-encoded.