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 aistart="2020-11-03T20:44:32Z" />
  </query-continue>
  <query>
    <allimages>
      <img name="90tharena.png" timestamp="2022-02-08T07:40:10Z" user="Celestials" url="http://ripred.net/wiki/images/b/b6/90tharena.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:90tharena.png" ns="6" title="File:90tharena.png" />
      <img name="88th_map.png" timestamp="2021-07-31T16:38:18Z" user="Fireflyz" url="http://ripred.net/wiki/images/4/49/88th_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:88th_map.png" ns="6" title="File:88th map.png" />
      <img name="87th_map.png" timestamp="2021-05-16T04:30:33Z" user="Izoe" url="http://ripred.net/wiki/images/0/0b/87th_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:87th_map.png" ns="6" title="File:87th map.png" />
      <img name="Terra.jpg" timestamp="2021-05-16T02:08:42Z" user="Izoe" url="http://ripred.net/wiki/images/5/5a/Terra.jpg" descriptionurl="http://ripred.net/wiki/index.php?title=File:Terra.jpg" ns="6" title="File:Terra.jpg" />
      <img name="86th_arena_map.png" timestamp="2020-11-03T21:01:00Z" user="Ghostyperson" url="http://ripred.net/wiki/images/e/ed/86th_arena_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:86th_arena_map.png" ns="6" title="File:86th arena map.png" />
      <img name="85th_arena_map.png" timestamp="2020-11-03T20:59:38Z" user="Ghostyperson" url="http://ripred.net/wiki/images/6/67/85th_arena_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:85th_arena_map.png" ns="6" title="File:85th arena map.png" />
      <img name="82nd_arena_map.png" timestamp="2020-11-03T20:59:22Z" user="Ghostyperson" url="http://ripred.net/wiki/images/3/3c/82nd_arena_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:82nd_arena_map.png" ns="6" title="File:82nd arena map.png" />
      <img name="81st_arena_map.png" timestamp="2020-11-03T20:58:58Z" user="Ghostyperson" url="http://ripred.net/wiki/images/c/c4/81st_arena_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:81st_arena_map.png" ns="6" title="File:81st arena map.png" />
      <img name="80th_arena_map.png" timestamp="2020-11-03T20:58:35Z" user="Ghostyperson" url="http://ripred.net/wiki/images/8/86/80th_arena_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:80th_arena_map.png" ns="6" title="File:80th arena map.png" />
      <img name="79th_arena_map.png" timestamp="2020-11-03T20:58:00Z" user="Ghostyperson" url="http://ripred.net/wiki/images/a/a5/79th_arena_map.png" descriptionurl="http://ripred.net/wiki/index.php?title=File:79th_arena_map.png" ns="6" title="File:79th arena map.png" />
    </allimages>
  </query>
</api>