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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>
    <allredirects garcontinue="Hacking:LGM_2013_Libre_Graphics_Meeting,_Madrid,_Spain,_2013|70" />
  </query-continue>
  <query>
    <pages>
      <page pageid="15" ns="0" title="Build:Basic" />
      <page pageid="31" ns="0" title="Hacking:GSOC" />
      <page pageid="33" ns="0" title="Hacking:GSoC/Future ideas" />
      <page pageid="34" ns="0" title="Hacking:GSoC 2011/Ideas" />
      <page pageid="35" ns="0" title="Hacking:GSOC Archive" />
      <page pageid="41" ns="0" title="Hacking:Dev Meeting 20 Apr 2011" />
      <page pageid="69" ns="0" title="Hacking:LGM 20 Libre Graphics Meeting, Vienna, Austria, 2012" />
      <page pageid="111" ns="0" title="Hacking:GIMPCon 2004, Stuttgart, Germany, 2005" />
      <page pageid="165" ns="0" title="Hacking:GSoC/2014/Ideas" />
      <page pageid="180" ns="0" title="Algorithms:Flood" />
    </pages>
  </query>
</api>