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>
    <allimages gaicontinue="4chan.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="576" ns="6" title="File:100MFURGET.jpg" />
      <page pageid="245" ns="6" title="File:1201882418.miles-df around the bend.jpg" />
      <page pageid="1027" ns="6" title="File:1614616846.lyceo photo 2021-03-01 16-04-59.jpg" />
      <page pageid="393" ns="6" title="File:2-the-ranting-gryphon.jpg" />
      <page pageid="674" ns="6" title="File:20100331 MK.png" />
      <page pageid="676" ns="6" title="File:20100331 MK screenshot.png" />
      <page pageid="392" ns="6" title="File:2 and Uncle Kage at FWA 2007.jpg" />
      <page pageid="745" ns="6" title="File:40px-baidu encyclopedia.gif" />
      <page pageid="963" ns="6" title="File:4337475684 01016bbe17.jpg" />
      <page pageid="575" ns="6" title="File:4CHANnewlogo.png" />
    </pages>
  </query>
</api>