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="DoorHandle.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="BRSU_testbed_img1.jpg" timestamp="2015-04-27T09:45:32Z" url="http://thewiki.rockinrobotchallenge.eu/images/5/53/BRSU_testbed_img1.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:BRSU_testbed_img1.jpg" ns="6" title="File:BRSU testbed img1.jpg" />
      <img name="BRSU_testbed_img2.jpg" timestamp="2015-04-27T09:45:51Z" url="http://thewiki.rockinrobotchallenge.eu/images/a/a3/BRSU_testbed_img2.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:BRSU_testbed_img2.jpg" ns="6" title="File:BRSU testbed img2.jpg" />
      <img name="BRSU_testbed_img3.jpg" timestamp="2015-04-27T09:46:02Z" url="http://thewiki.rockinrobotchallenge.eu/images/9/99/BRSU_testbed_img3.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:BRSU_testbed_img3.jpg" ns="6" title="File:BRSU testbed img3.jpg" />
      <img name="BRSU_testbed_img4.jpg" timestamp="2015-04-27T09:46:14Z" url="http://thewiki.rockinrobotchallenge.eu/images/c/c0/BRSU_testbed_img4.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:BRSU_testbed_img4.jpg" ns="6" title="File:BRSU testbed img4.jpg" />
      <img name="BRSU_testbed_img5.jpg" timestamp="2015-04-27T09:46:28Z" url="http://thewiki.rockinrobotchallenge.eu/images/d/d4/BRSU_testbed_img5.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:BRSU_testbed_img5.jpg" ns="6" title="File:BRSU testbed img5.jpg" />
      <img name="BRSU_testbed_img6.jpg" timestamp="2015-04-27T09:46:38Z" url="http://thewiki.rockinrobotchallenge.eu/images/5/55/BRSU_testbed_img6.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:BRSU_testbed_img6.jpg" ns="6" title="File:BRSU testbed img6.jpg" />
      <img name="Blue_box.jpg" timestamp="2015-04-28T10:07:14Z" url="http://thewiki.rockinrobotchallenge.eu/images/a/a6/Blue_box.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Blue_box.jpg" ns="6" title="File:Blue box.jpg" />
      <img name="Box.png" timestamp="2015-04-13T18:30:22Z" url="http://thewiki.rockinrobotchallenge.eu/images/2/2b/Box.png" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Box.png" ns="6" title="File:Box.png" />
      <img name="Close_Smile_front_view.jpg" timestamp="2015-04-13T17:35:50Z" url="http://thewiki.rockinrobotchallenge.eu/images/6/64/Close_Smile_front_view.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Close_Smile_front_view.jpg" ns="6" title="File:Close Smile front view.jpg" />
      <img name="Cup.jpg" timestamp="2015-04-13T18:30:32Z" url="http://thewiki.rockinrobotchallenge.eu/images/e/e8/Cup.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Cup.jpg" ns="6" title="File:Cup.jpg" />
    </allimages>
  </query>
</api>