title: Customizing output of <jdoc:include type="head"/> in joomla 3.2
body: <p>So I was reading in the joomla wiki but could not find any further details <a href="http://docs.joomla.org/Jdoc_statements" rel="nofollow noreferrer">than general talk</a>.</p>
  
  <p>So what I basically want to change is what is being loaded. For the simple main page of my blog joomla loads a a truckload of files, and a a big part is not cached. I want to introduce a caching mechanism and remove the things I am sure I don't need.</p>
  
  <p>So what I in detail want to know is where is:
  <code>&lt;jdoc:include type="head"/&gt;</code>
  implemented?</p>
  
  <p>If a tool exists to realize the caching in a easier fashion than actually writing it myself, i'd be very thankful as well. I am talking about caching pictures, css and javascript files by setting expire to in one year. Afterwards invalidating the cached files by adding a version number to the request string.</p>
  
  <p><img src="https://i.stack.imgur.com/U0Cgy.png" alt="enter image description here"></p>