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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>
    <allimages gaicontinue="12.40.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="225" ns="6" title="File:01-NESC January 2006-LINCOLN.pdf" />
      <page pageid="4226" ns="6" title="File:01 Structural.png" />
      <page pageid="216" ns="6" title="File:02-chado-for-nescent-2006.pdf" />
      <page pageid="461" ns="6" title="File:02-chado-for-nescent-2006.ppt" />
      <page pageid="217" ns="6" title="File:03-NESCent intro.pdf" />
      <page pageid="462" ns="6" title="File:03-NESCent intro.ppt" />
      <page pageid="226" ns="6" title="File:04-Stajich NESCENT GMOD.pdf" />
      <page pageid="218" ns="6" title="File:05-chado overview.pdf" />
      <page pageid="464" ns="6" title="File:05-chado overview.ppt" />
      <page pageid="768" ns="6" title="File:100 5955 1.jpg" />
    </pages>
  </query>
</api>