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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="3_Norwegian_Appendix_plus_3_SLAVOB-final.pdf" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1487" ns="6" title="File:010 short sample.wav" />
      <page pageid="1072" ns="6" title="File:12032011038.jpg" />
      <page pageid="2610" ns="6" title="File:13849489334 69055de984-1-.jpg" />
      <page pageid="456" ns="6" title="File:1 Introlabels SLAVOB-final.pdf" />
      <page pageid="1736" ns="6" title="File:1.png" />
      <page pageid="2720" ns="6" title="File:2016 SLE Biberauer Emergent features.pdf" />
      <page pageid="103" ns="6" title="File:23rdSCL.pdf" />
      <page pageid="239" ns="6" title="File:2birds.jpg" />
      <page pageid="457" ns="6" title="File:2 Ga appendix SLAVOB-final.pdf" />
      <page pageid="1874" ns="6" title="File:2.jpg" />
    </pages>
  </query>
</api>