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="Site_manager_mysql.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Domain_manager.png" timestamp="2013-07-22T05:46:16Z" url="http://kb.lamphost.com/images/2/2d/Domain_manager.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Domain_manager.png" ns="6" title="File:Domain manager.png" />
      <img name="Email_forwards.png" timestamp="2013-07-19T22:17:22Z" url="http://kb.lamphost.com/images/8/8d/Email_forwards.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Email_forwards.png" ns="6" title="File:Email forwards.png" />
      <img name="File_perms.png" timestamp="2013-07-25T20:17:01Z" url="http://kb.lamphost.com/images/1/1f/File_perms.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:File_perms.png" ns="6" title="File:File perms.png" />
      <img name="Hosting_manager.png" timestamp="2013-07-23T18:22:37Z" url="http://kb.lamphost.com/images/8/8b/Hosting_manager.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Hosting_manager.png" ns="6" title="File:Hosting manager.png" />
      <img name="Nameservers.jpeg" timestamp="2013-07-19T21:36:56Z" url="http://kb.lamphost.com/images/a/a6/Nameservers.jpeg" descriptionurl="http://kb.lamphost.com/index.php?title=File:Nameservers.jpeg" ns="6" title="File:Nameservers.jpeg" />
      <img name="Nameservers.jpg" timestamp="2013-07-19T21:39:59Z" url="http://kb.lamphost.com/images/4/4f/Nameservers.jpg" descriptionurl="http://kb.lamphost.com/index.php?title=File:Nameservers.jpg" ns="6" title="File:Nameservers.jpg" />
      <img name="Pass_protect.png" timestamp="2013-07-23T20:15:19Z" url="http://kb.lamphost.com/images/c/cf/Pass_protect.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Pass_protect.png" ns="6" title="File:Pass protect.png" />
      <img name="Phpmyadmin1.png" timestamp="2013-07-24T18:34:51Z" url="http://kb.lamphost.com/images/2/22/Phpmyadmin1.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Phpmyadmin1.png" ns="6" title="File:Phpmyadmin1.png" />
      <img name="Phpmyadmin2.png" timestamp="2013-07-24T18:35:11Z" url="http://kb.lamphost.com/images/5/57/Phpmyadmin2.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Phpmyadmin2.png" ns="6" title="File:Phpmyadmin2.png" />
      <img name="Site_manager.png" timestamp="2013-07-23T21:31:41Z" url="http://kb.lamphost.com/images/3/36/Site_manager.png" descriptionurl="http://kb.lamphost.com/index.php?title=File:Site_manager.png" ns="6" title="File:Site manager.png" />
    </allimages>
  </query>
</api>