You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaifrom="060209 EN Rachael&amp;Spencer 0194.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5798" ns="6" title="File:-Kyoto-Top-logo 090803.jpg" />
      <page pageid="1352" ns="6" title="File:.090530 1153~01.jpg">
        <duplicatefiles>
          <df name="Sample1.JPG" user="Kouya" timestamp="2009-05-30T03:56:46Z" />
          <df name="Sample1.jpg" user="Kouya" timestamp="2009-05-30T03:58:31Z" />
        </duplicatefiles>
      </page>
      <page pageid="6481" ns="6" title="File:0.jpg" />
      <page pageid="26401" ns="6" title="File:01.jpg" />
      <page pageid="26405" ns="6" title="File:02.jpg" />
      <page pageid="18381" ns="6" title="File:02 puc pro characterization graph.png" />
      <page pageid="20988" ns="6" title="File:02 puc pro characterization graph a.png" />
      <page pageid="13526" ns="6" title="File:041009 RO2dt.jpg" />
      <page pageid="18391" ns="6" title="File:050609results Tecan3.jpg" />
      <page pageid="18386" ns="6" title="File:050609results table.jpg" />
    </pages>
  </query>
</api>