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="20151014094514|TBM3-Reading-glasses.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="TBM3-Pepsi-paper-cup-new.jpg" timestamp="2015-11-19T18:06:24Z" user="Rockinadmin" url="http://thewiki.rockinrobotchallenge.eu/images/9/95/TBM3-Pepsi-paper-cup-new.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:TBM3-Pepsi-paper-cup-new.jpg" ns="6" title="File:TBM3-Pepsi-paper-cup-new.jpg" />
      <img name="All_objects.png" timestamp="2015-11-19T17:50:58Z" user="UNIROMA" url="http://thewiki.rockinrobotchallenge.eu/images/4/4a/All_objects.png" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:All_objects.png" ns="6" title="File:All objects.png" />
      <img name="Footprint-RoCKIn-AtHome-2015-Rooms.png" timestamp="2015-11-19T16:31:23Z" user="UNIROMA" url="http://thewiki.rockinrobotchallenge.eu/images/5/55/Footprint-RoCKIn-AtHome-2015-Rooms.png" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Footprint-RoCKIn-AtHome-2015-Rooms.png" ns="6" title="File:Footprint-RoCKIn-AtHome-2015-Rooms.png" />
      <img name="MarkerFBMArUco.pdf" timestamp="2015-11-19T10:04:20Z" user="KUKA" url="http://thewiki.rockinrobotchallenge.eu/images/7/78/MarkerFBMArUco.pdf" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:MarkerFBMArUco.pdf" ns="6" title="File:MarkerFBMArUco.pdf" />
      <img name="ArUcoTag_WithCoordinateSystem.png" timestamp="2015-11-19T10:01:07Z" user="KUKA" url="http://thewiki.rockinrobotchallenge.eu/images/4/48/ArUcoTag_WithCoordinateSystem.png" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:ArUcoTag_WithCoordinateSystem.png" ns="6" title="File:ArUcoTag WithCoordinateSystem.png" />
      <img name="AlvarTag_WithCoordinateSystem.png" timestamp="2015-11-19T09:59:57Z" user="KUKA" url="http://thewiki.rockinrobotchallenge.eu/images/8/87/AlvarTag_WithCoordinateSystem.png" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:AlvarTag_WithCoordinateSystem.png" ns="6" title="File:AlvarTag WithCoordinateSystem.png" />
      <img name="Markers_0-1-2.pdf" timestamp="2015-11-16T14:43:07Z" user="POLIMI" url="http://thewiki.rockinrobotchallenge.eu/images/d/d6/Markers_0-1-2.pdf" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Markers_0-1-2.pdf" ns="6" title="File:Markers 0-1-2.pdf" />
      <img name="Table_frame.jpg" timestamp="2015-11-16T14:37:43Z" user="POLIMI" url="http://thewiki.rockinrobotchallenge.eu/images/8/8a/Table_frame.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Table_frame.jpg" ns="6" title="File:Table frame.jpg" />
      <img name="Refbox-home-FBM2-corrected2.jpg" timestamp="2015-11-12T15:05:16Z" user="Rockinadmin" url="http://thewiki.rockinrobotchallenge.eu/images/5/5a/Refbox-home-FBM2-corrected2.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Refbox-home-FBM2-corrected2.jpg" ns="6" title="File:Refbox-home-FBM2-corrected2.jpg" />
      <img name="Marker_set_2015.jpg" timestamp="2015-11-04T09:44:32Z" user="POLIMI" url="http://thewiki.rockinrobotchallenge.eu/images/5/54/Marker_set_2015.jpg" descriptionurl="http://thewiki.rockinrobotchallenge.eu/index.php/File:Marker_set_2015.jpg" ns="6" title="File:Marker set 2015.jpg" />
    </allimages>
  </query>
</api>