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="040919 sketchbook.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="47604" ns="6" title="File:$$$card.PNG" />
      <page pageid="48915" ns="6" title="File:&#039;Puter &#039;Sploder.png" />
      <page pageid="23549" ns="6" title="File:&#039;Stash Homestar.png" />
      <page pageid="15200" ns="6" title="File:&#039;m srry.PNG" />
      <page pageid="20025" ns="6" title="File:(i)-force logo.PNG" />
      <page pageid="50999" ns="6" title="File:001.JPG" />
      <page pageid="32409" ns="6" title="File:010307sketchbook.PNG" />
      <page pageid="17342" ns="6" title="File:011206 fanstuff knitdor and strong bag.PNG" />
      <page pageid="17341" ns="6" title="File:011206 sketchbook teen homestars.PNG" />
      <page pageid="32083" ns="6" title="File:01mindy.png" />
    </pages>
  </query>
</api>