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="Gayton_Holiday_Guide_insert.pdf" />
  </query-continue>
  <query>
    <allimages>
      <img name="Buggered_graph.png" timestamp="2006-07-10T23:09:43Z" url="https://strugglers.net/w/images/7/7f/Buggered_graph.png" descriptionurl="https://strugglers.net/wiki/File:Buggered_graph.png" ns="6" title="File:Buggered graph.png" />
      <img name="Cacti_favicon.ico" timestamp="2006-01-13T14:05:06Z" url="https://strugglers.net/w/images/3/3c/Cacti_favicon.ico" descriptionurl="https://strugglers.net/wiki/File:Cacti_favicon.ico" ns="6" title="File:Cacti favicon.ico" />
      <img name="Cacti_favicon_demo.png" timestamp="2006-01-13T13:55:14Z" url="https://strugglers.net/w/images/a/ae/Cacti_favicon_demo.png" descriptionurl="https://strugglers.net/wiki/File:Cacti_favicon_demo.png" ns="6" title="File:Cacti favicon demo.png" />
      <img name="DSCF7787_copy.jpg" timestamp="2010-02-12T00:35:02Z" url="https://strugglers.net/w/images/d/d5/DSCF7787_copy.jpg" descriptionurl="https://strugglers.net/wiki/File:DSCF7787_copy.jpg" ns="6" title="File:DSCF7787 copy.jpg" />
      <img name="Disk_layout_digraph_layout.png" timestamp="2016-01-08T22:41:01Z" url="https://strugglers.net/w/images/5/5a/Disk_layout_digraph_layout.png" descriptionurl="https://strugglers.net/wiki/File:Disk_layout_digraph_layout.png" ns="6" title="File:Disk layout digraph layout.png" />
      <img name="Dog_Show_Poster.pdf" timestamp="2016-07-12T15:52:49Z" url="https://strugglers.net/w/images/5/5a/Dog_Show_Poster.pdf" descriptionurl="https://strugglers.net/wiki/File:Dog_Show_Poster.pdf" ns="6" title="File:Dog Show Poster.pdf" />
      <img name="Fairytale_gwb_cheney_duet.txt" timestamp="2006-07-17T01:59:26Z" url="https://strugglers.net/w/images/2/2c/Fairytale_gwb_cheney_duet.txt" descriptionurl="https://strugglers.net/wiki/File:Fairytale_gwb_cheney_duet.txt" ns="6" title="File:Fairytale gwb cheney duet.txt" />
      <img name="Feltham_Station_Post_Box_Demystified_digraph_postbox.png" timestamp="2016-02-10T04:16:14Z" url="https://strugglers.net/w/images/c/cc/Feltham_Station_Post_Box_Demystified_digraph_postbox.png" descriptionurl="https://strugglers.net/wiki/File:Feltham_Station_Post_Box_Demystified_digraph_postbox.png" ns="6" title="File:Feltham Station Post Box Demystified digraph postbox.png" />
      <img name="Feltham_Station_Post_Box_Demystified_digraph_postbox_Andy.png" timestamp="2017-09-21T19:48:49Z" url="https://strugglers.net/w/images/5/51/Feltham_Station_Post_Box_Demystified_digraph_postbox_Andy.png" descriptionurl="https://strugglers.net/wiki/File:Feltham_Station_Post_Box_Demystified_digraph_postbox_Andy.png" ns="6" title="File:Feltham Station Post Box Demystified digraph postbox Andy.png" />
      <img name="Fixed_graph.png" timestamp="2006-07-10T23:42:39Z" url="https://strugglers.net/w/images/9/9d/Fixed_graph.png" descriptionurl="https://strugglers.net/wiki/File:Fixed_graph.png" ns="6" title="File:Fixed graph.png" />
    </allimages>
  </query>
</api>