You are looking at the HTML representation of the XML format.
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.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20161219084635" timestamp="2016-12-19T08:46:35Z" ns="0" title="Testpage EN2 pls dont edit" />
        <page value="20170127163952" timestamp="2017-01-27T16:39:52Z" ns="0" title="Page française de test" />
        <page value="20170302154903" timestamp="2017-03-02T15:49:03Z" ns="0" title="Testpage EN pls dont edit" />
        <page value="20170415235038" timestamp="2017-04-15T23:50:38Z" ns="0" title="Tabellenvorlage" />
        <page value="20171106163221" timestamp="2017-11-06T16:32:21Z" ns="0" title="CSS-Liste" />
        <page value="20171208043624" timestamp="2017-12-08T04:36:24Z" ns="0" title="Contre les romains, capacités de Bocomdelantix" />
        <page value="20171208043641" timestamp="2017-12-08T04:36:41Z" ns="0" title="Contre les romains, capacités de Démocratix" />
        <page value="20171208043658" timestamp="2017-12-08T04:36:58Z" ns="0" title="Contre les romains, capacités de Guitaracoustix" />
        <page value="20171208043747" timestamp="2017-12-08T04:37:47Z" ns="0" title="Contre les romains, capacités de Joystix" />
        <page value="20171208043820" timestamp="2017-12-08T04:38:20Z" ns="0" title="Contre les romains, capacités de l&#039;ouvrier égyptien" />
      </results>
    </querypage>
  </query>
</api>