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="20151028130544|ArmorDecay_MinDecay.gif" />
  </query-continue>
  <query>
    <allimages>
      <img name="Arkpedia_HomePage.jpg" timestamp="2021-01-27T22:03:50Z" user="Wikiadmin" url="http://arkpedia.info/images/6/6c/Arkpedia_HomePage.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Arkpedia_HomePage.jpg" ns="6" title="File:Arkpedia HomePage.jpg" />
      <img name="Ark_Plsm_Rfl.jpg" timestamp="2015-10-29T12:01:11Z" user="Jjmatrix" url="http://arkpedia.info/images/4/4a/Ark_Plsm_Rfl.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Plsm_Rfl.jpg" ns="6" title="File:Ark Plsm Rfl.jpg" />
      <img name="Ark_Longbld.jpg" timestamp="2015-10-29T12:00:47Z" user="Jjmatrix" url="http://arkpedia.info/images/4/4d/Ark_Longbld.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Longbld.jpg" ns="6" title="File:Ark Longbld.jpg" />
      <img name="Ark_Shortbld.jpg" timestamp="2015-10-29T12:00:07Z" user="Jjmatrix" url="http://arkpedia.info/images/3/36/Ark_Shortbld.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Shortbld.jpg" ns="6" title="File:Ark Shortbld.jpg" />
      <img name="Ark_BLP_Rfl.jpg" timestamp="2015-10-29T11:59:29Z" user="Jjmatrix" url="http://arkpedia.info/images/7/71/Ark_BLP_Rfl.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_BLP_Rfl.jpg" ns="6" title="File:Ark BLP Rfl.jpg" />
      <img name="Ark_BLP_Hndg.jpg" timestamp="2015-10-29T11:58:44Z" user="Jjmatrix" url="http://arkpedia.info/images/f/f4/Ark_BLP_Hndg.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_BLP_Hndg.jpg" ns="6" title="File:Ark BLP Hndg.jpg" />
      <img name="Ark_Lsr_Cross.jpg" timestamp="2015-10-29T11:58:08Z" user="Jjmatrix" url="http://arkpedia.info/images/1/12/Ark_Lsr_Cross.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Lsr_Cross.jpg" ns="6" title="File:Ark Lsr Cross.jpg" />
      <img name="Ark_Lsr_Rfl.jpg" timestamp="2015-10-29T11:57:27Z" user="Jjmatrix" url="http://arkpedia.info/images/3/35/Ark_Lsr_Rfl.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Lsr_Rfl.jpg" ns="6" title="File:Ark Lsr Rfl.jpg" />
      <img name="Ark_Lsr_Carb.jpg" timestamp="2015-10-29T11:55:51Z" user="Jjmatrix" url="http://arkpedia.info/images/3/3a/Ark_Lsr_Carb.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Lsr_Carb.jpg" ns="6" title="File:Ark Lsr Carb.jpg" />
      <img name="Ark_Lsr_Hndg.jpg" timestamp="2015-10-29T11:21:01Z" user="Jjmatrix" url="http://arkpedia.info/images/5/58/Ark_Lsr_Hndg.jpg" descriptionurl="http://arkpedia.info/index.php?title=File:Ark_Lsr_Hndg.jpg" ns="6" title="File:Ark Lsr Hndg.jpg" />
    </allimages>
  </query>
</api>