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="Bakerglena_punch.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="BPoSuperiority.png" timestamp="2016-02-08T01:34:18Z" url="https://wiki.project1999.com/images/BPoSuperiority.png" descriptionurl="https://wiki.project1999.com/File:BPoSuperiority.png" ns="6" title="File:BPoSuperiority.png" />
      <img name="BST_13831_58015.jpg" timestamp="2022-11-22T09:34:26Z" url="https://wiki.project1999.com/images/BST_13831_58015.jpg" descriptionurl="https://wiki.project1999.com/File:BST_13831_58015.jpg" ns="6" title="File:BST 13831 58015.jpg" />
      <img name="BST_216_213200.jpg" timestamp="2022-11-23T14:14:11Z" url="https://wiki.project1999.com/images/BST_216_213200.jpg" descriptionurl="https://wiki.project1999.com/File:BST_216_213200.jpg" ns="6" title="File:BST 216 213200.jpg" />
      <img name="BST_22634_250406.jpg" timestamp="2021-01-11T11:42:49Z" url="https://wiki.project1999.com/images/BST_22634_250406.jpg" descriptionurl="https://wiki.project1999.com/File:BST_22634_250406.jpg" ns="6" title="File:BST 22634 250406.jpg" />
      <img name="BST_25234_228747.jpg" timestamp="2022-11-24T12:26:42Z" url="https://wiki.project1999.com/images/BST_25234_228747.jpg" descriptionurl="https://wiki.project1999.com/File:BST_25234_228747.jpg" ns="6" title="File:BST 25234 228747.jpg" />
      <img name="BST_2793_222223.jpg" timestamp="2022-11-24T22:51:05Z" url="https://wiki.project1999.com/images/BST_2793_222223.jpg" descriptionurl="https://wiki.project1999.com/File:BST_2793_222223.jpg" ns="6" title="File:BST 2793 222223.jpg" />
      <img name="Background.jpg" timestamp="2022-01-29T16:49:18Z" url="https://wiki.project1999.com/images/Background.jpg" descriptionurl="https://wiki.project1999.com/File:Background.jpg" ns="6" title="File:Background.jpg" />
      <img name="Baenar_Swiftsong.jpeg" timestamp="2018-03-14T07:41:18Z" url="https://wiki.project1999.com/images/Baenar_Swiftsong.jpeg" descriptionurl="https://wiki.project1999.com/File:Baenar_Swiftsong.jpeg" ns="6" title="File:Baenar Swiftsong.jpeg" />
      <img name="Bageljuicemagelo.jpg" timestamp="2024-01-23T07:23:35Z" url="https://wiki.project1999.com/images/Bageljuicemagelo.jpg" descriptionurl="https://wiki.project1999.com/File:Bageljuicemagelo.jpg" ns="6" title="File:Bageljuicemagelo.jpg" />
      <img name="BakerGlena.png" timestamp="2022-01-25T02:50:01Z" url="https://wiki.project1999.com/images/BakerGlena.png" descriptionurl="https://wiki.project1999.com/File:BakerGlena.png" ns="6" title="File:BakerGlena.png" />
    </allimages>
  </query>
</api>