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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <allfileusages gafcontinue="Csit-system-design-hierarchy.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="642" ns="6" title="File:Benchmarking-sw-data-planes-Dec5 2017.pdf" />
      <page pageid="529" ns="6" title="File:Building in Containers PoC.pdf" />
      <page pageid="798" ns="6" title="File:CSIT status.PNG" />
      <page pageid="800" ns="6" title="File:Capture LandC.PNG" />
      <page pageid="402" ns="6" title="File:Chinac&#039;s Experience of VPP in OpenStack.pptx" />
      <page pageid="572" ns="6" title="File:Cisco Live VPP and container networking (BRKSDN-2119).pptx" />
      <page pageid="564" ns="6" title="File:Clear Containers+VPP-overview-JuneDevLab.pdf" />
      <page pageid="845" ns="6" title="File:Code.png" />
      <page pageid="632" ns="6" title="File:Connecting two vpp instances with memif.png" />
      <page pageid="476" ns="6" title="File:Create Interface Topology.jpg" />
    </pages>
  </query>
</api>