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>
    <allfileusages gafcontinue="Backwwww.png|2763" />
  </query-continue>
  <query>
    <pages>
      <page pageid="305" ns="0" title="BG-A003: Folding Bed with Adjustable Headrest" />
      <page pageid="363" ns="0" title="How to mark paid once buyer received strike for unpaid order (create order)" />
      <page pageid="2464" ns="0" title="2016 &amp; earlier" />
      <page pageid="2519" ns="0" title="Bestdeals NZ" />
      <page pageid="2669" ns="0" title="INSTRUCTIONS ON HOW TO ARRANGE PICK UP VIA BARLOWS(NZ)" />
      <page pageid="2754" ns="0" title="REFUNDS" />
      <page pageid="2762" ns="0" title="RESEND (ITEM or KITTING BOX)" />
    </pages>
  </query>
</api>