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 aicontinue="LostMine_pic6.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="BlackSpider_note1.jpg" timestamp="2019-10-25T03:24:58Z" url="http://onlyrumours.alstanford.com/images/BlackSpider_note1.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:BlackSpider_note1.jpg" ns="6" title="File:BlackSpider note1.jpg" />
      <img name="BlackSpider_note2.jpg" timestamp="2019-10-25T03:25:37Z" url="http://onlyrumours.alstanford.com/images/BlackSpider_note2.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:BlackSpider_note2.jpg" ns="6" title="File:BlackSpider note2.jpg" />
      <img name="Cragmaw_note.jpg" timestamp="2019-10-25T03:26:17Z" url="http://onlyrumours.alstanford.com/images/Cragmaw_note.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:Cragmaw_note.jpg" ns="6" title="File:Cragmaw note.jpg" />
      <img name="ListOfTheGods.jpg" timestamp="2019-10-25T03:26:43Z" url="http://onlyrumours.alstanford.com/images/ListOfTheGods.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:ListOfTheGods.jpg" ns="6" title="File:ListOfTheGods.jpg" />
      <img name="LostMine_pic1.jpg" timestamp="2019-10-25T03:27:24Z" url="http://onlyrumours.alstanford.com/images/LostMine_pic1.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:LostMine_pic1.jpg" ns="6" title="File:LostMine pic1.jpg" />
      <img name="LostMine_pic10.jpg" timestamp="2019-10-25T03:29:57Z" url="http://onlyrumours.alstanford.com/images/LostMine_pic10.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:LostMine_pic10.jpg" ns="6" title="File:LostMine pic10.jpg" />
      <img name="LostMine_pic2.jpg" timestamp="2019-10-25T03:27:40Z" url="http://onlyrumours.alstanford.com/images/LostMine_pic2.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:LostMine_pic2.jpg" ns="6" title="File:LostMine pic2.jpg" />
      <img name="LostMine_pic3.jpg" timestamp="2019-10-25T03:27:52Z" url="http://onlyrumours.alstanford.com/images/LostMine_pic3.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:LostMine_pic3.jpg" ns="6" title="File:LostMine pic3.jpg" />
      <img name="LostMine_pic4.jpg" timestamp="2019-10-25T03:28:06Z" url="http://onlyrumours.alstanford.com/images/LostMine_pic4.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:LostMine_pic4.jpg" ns="6" title="File:LostMine pic4.jpg" />
      <img name="LostMine_pic5.jpg" timestamp="2019-10-25T03:28:19Z" url="http://onlyrumours.alstanford.com/images/LostMine_pic5.jpg" descriptionurl="http://onlyrumours.alstanford.com/index.php/File:LostMine_pic5.jpg" ns="6" title="File:LostMine pic5.jpg" />
    </allimages>
  </query>
</api>