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HTML is good for debugging, but is unsuitable for application use.
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To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query>
    <pages>
      <page ns="0" title="API" missing="" />
      <page pageid="1" ns="0" title="Main Page">
        <revisions>
          <rev user="Gagnon" timestamp="2017-05-03T20:28:20Z" comment="" contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">[[File:GagnonCoat.png|frameless|500px|left]]
==Family History==
[[Gagnon Family History]]&lt;br&gt;
==Paternal Lineage Chart==
[[Barnabé Gagnon (1547)]]&lt;br&gt;
[[Pierre Gagnon (1572)]]&lt;br&gt;
[[Jean Gagnon (1610)]]&lt;br&gt;
[[Jean Gagnon (1648)]]&lt;br&gt;
[[Joseph Gagnon (1685)]]&lt;br&gt;
[[Dominique Gagnon (1730)]]&lt;br&gt;
[[Dominique Gagnon (1755)]]&lt;br&gt;
[[Étienne Gagnon (1781)]]&lt;br&gt;
[[Élie Gagnon (1812)]]&lt;br&gt;
[[Alexandre Gagnon (1844)]]&lt;br&gt;
[[Alexandre Gagnon (1865)]]&lt;br&gt;
[[Onesime Gagnon (1892)]]&lt;br&gt;

==Help Researching==
[[Research Resources]]</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>