title: What is content data format of HTTP response when content-type header is image/jpeg?
body: <p>Just curious, what is the content data type format of HTTP response body when content-type header is image/jpeg, binary? Was unable to see the raw content of HTTP response when viewing via Mozilla Firebug because it pops with image already.</p>
  
  <p>I have never though about that too much till the talk with a guy, that told he encodes binary data into base64 format data into body of HTTP response. Are there any use cases when we need to do that?</p>