You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaicontinue="The_Refuge_FY15_PA.pdf" />
  </query-continue>
  <query>
    <pages>
      <page pageid="663" ns="6" title="File:Tax Watch Patriot Housing gets swift results for vets in West.pdf" imagerepository="local">
        <imageinfo>
          <ii timestamp="2013-11-15T16:32:41Z" user="KBertrand" />
        </imageinfo>
      </page>
      <page pageid="667" ns="6" title="File:Tax Watch Patriot Housing gets swift results for vets in Westche.pdf" imagerepository="local">
        <imageinfo>
          <ii timestamp="2013-11-27T19:20:56Z" user="KBertrand" />
        </imageinfo>
      </page>
      <page pageid="584" ns="6" title="File:Tax Watch Westchester towns face brunt of Astorino s fair hou.pdf" imagerepository="local">
        <imageinfo>
          <ii timestamp="2013-04-22T02:12:58Z" user="Kmines" />
        </imageinfo>
      </page>
      <page pageid="792" ns="6" title="File:The Refuge CoC Environmental Review 2014.pdf" imagerepository="local">
        <imageinfo>
          <ii timestamp="2014-10-31T14:15:06Z" user="Yspiegel" />
        </imageinfo>
      </page>
    </pages>
  </query>
</api>