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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="Air_Force_-_Implementation_of_FY11_NDAA_Section_8108_Contractor_Inventory1_pdf.pdf" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1825" ns="6" title="File:10310 AP NA Labor Floorchecks.pdf" />
      <page pageid="1824" ns="6" title="File:13500 Labor Floorchecks, Major.pdf" />
      <page pageid="1763" ns="6" title="File:19100 AP Compliance of Initial Disclosure Statement.pdf" />
      <page pageid="1770" ns="6" title="File:20014-09 - Kendall and Interim Release of BBP 30.pdf" />
      <page pageid="2521" ns="6" title="File:2016 CPSR Guidebook.pdf" />
      <page pageid="2555" ns="6" title="File:300% Rule Calculation.jpg" />
      <page pageid="2720" ns="6" title="File:3FF Worksheet.xlsx" />
      <page pageid="2721" ns="6" title="File:3 Factor Formula Worksheet.xlsx" />
      <page pageid="1858" ns="6" title="File:56708 SWR, Inc. December 2014.pdf" />
      <page pageid="2652" ns="6" title="File:61691 Doubleshot, Inc. 7.19.22 Decision.pdf" />
    </pages>
  </query>
</api>