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="VCAT2_All_InfoList.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Dsc0035.jpeg" timestamp="2015-04-29T15:59:47Z" url="http://wiki2.vcat.us/images/b/bc/Dsc0035.jpeg" descriptionurl="http://wiki2.vcat.us/index.php/File:Dsc0035.jpeg" ns="6" title="File:Dsc0035.jpeg" />
      <img name="GoogleSignIn_BlockCookies_WillNotWork.png" timestamp="2018-09-05T13:13:21Z" url="http://wiki2.vcat.us/images/b/bb/GoogleSignIn_BlockCookies_WillNotWork.png" descriptionurl="http://wiki2.vcat.us/index.php/File:GoogleSignIn_BlockCookies_WillNotWork.png" ns="6" title="File:GoogleSignIn BlockCookies WillNotWork.png" />
      <img name="Img0159.jpeg" timestamp="2015-04-29T16:00:11Z" url="http://wiki2.vcat.us/images/0/02/Img0159.jpeg" descriptionurl="http://wiki2.vcat.us/index.php/File:Img0159.jpeg" ns="6" title="File:Img0159.jpeg" />
      <img name="Picture_JB.png" timestamp="2017-12-19T16:37:55Z" url="http://wiki2.vcat.us/images/a/af/Picture_JB.png" descriptionurl="http://wiki2.vcat.us/index.php/File:Picture_JB.png" ns="6" title="File:Picture JB.png" />
      <img name="Stevepeery.jpeg" timestamp="2015-04-29T17:11:25Z" url="http://wiki2.vcat.us/images/3/33/Stevepeery.jpeg" descriptionurl="http://wiki2.vcat.us/index.php/File:Stevepeery.jpeg" ns="6" title="File:Stevepeery.jpeg" />
      <img name="VCAT2_1IndivStud.png" timestamp="2014-01-27T13:36:18Z" url="http://wiki2.vcat.us/images/3/3f/VCAT2_1IndivStud.png" descriptionurl="http://wiki2.vcat.us/index.php/File:VCAT2_1IndivStud.png" ns="6" title="File:VCAT2 1IndivStud.png" />
      <img name="VCAT2_2IndivStud.png" timestamp="2014-01-27T13:36:38Z" url="http://wiki2.vcat.us/images/6/6c/VCAT2_2IndivStud.png" descriptionurl="http://wiki2.vcat.us/index.php/File:VCAT2_2IndivStud.png" ns="6" title="File:VCAT2 2IndivStud.png" />
      <img name="VCAT2_2StudGroups.png" timestamp="2014-01-27T14:32:04Z" url="http://wiki2.vcat.us/images/2/23/VCAT2_2StudGroups.png" descriptionurl="http://wiki2.vcat.us/index.php/File:VCAT2_2StudGroups.png" ns="6" title="File:VCAT2 2StudGroups.png" />
      <img name="VCAT2_A_Tab_Import.png" timestamp="2016-03-11T15:54:14Z" url="http://wiki2.vcat.us/images/f/f1/VCAT2_A_Tab_Import.png" descriptionurl="http://wiki2.vcat.us/index.php/File:VCAT2_A_Tab_Import.png" ns="6" title="File:VCAT2 A Tab Import.png" />
      <img name="VCAT2_AllStudents_DataEntry.png" timestamp="2014-01-22T13:54:55Z" url="http://wiki2.vcat.us/images/5/58/VCAT2_AllStudents_DataEntry.png" descriptionurl="http://wiki2.vcat.us/index.php/File:VCAT2_AllStudents_DataEntry.png" ns="6" title="File:VCAT2 AllStudents DataEntry.png" />
    </allimages>
  </query>
</api>