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="Bund_left_corner2.PNG" />
  </query-continue>
  <query>
    <allimages>
      <img name="Basic_State_Machine_Elements.jpg" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/6/64/Basic_State_Machine_Elements.jpg" descriptionurl="http://eudp.net/index.php/File:Basic_State_Machine_Elements.jpg" ns="6" title="File:Basic State Machine Elements.jpg" />
      <img name="Basic_Subsystems_Architecture.gif" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/2/23/Basic_Subsystems_Architecture.gif" descriptionurl="http://eudp.net/index.php/File:Basic_Subsystems_Architecture.gif" ns="6" title="File:Basic Subsystems Architecture.gif" />
      <img name="Bd1.png" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/7/75/Bd1.png" descriptionurl="http://eudp.net/index.php/File:Bd1.png" ns="6" title="File:Bd1.png" />
      <img name="Bd2.png" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/a/a4/Bd2.png" descriptionurl="http://eudp.net/index.php/File:Bd2.png" ns="6" title="File:Bd2.png" />
      <img name="Bd3.png" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/5/56/Bd3.png" descriptionurl="http://eudp.net/index.php/File:Bd3.png" ns="6" title="File:Bd3.png" />
      <img name="BetterDesign.png" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/f/f1/BetterDesign.png" descriptionurl="http://eudp.net/index.php/File:BetterDesign.png" ns="6" title="File:BetterDesign.png" />
      <img name="Blah.gif" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/6/65/Blah.gif" descriptionurl="http://eudp.net/index.php/File:Blah.gif" ns="6" title="File:Blah.gif" />
      <img name="Box_with_eyes.svg.png" timestamp="2016-09-15T11:41:24Z" url="http://eudp.net/images/7/71/Box_with_eyes.svg.png" descriptionurl="http://eudp.net/index.php/File:Box_with_eyes.svg.png" ns="6" title="File:Box with eyes.svg.png" />
      <img name="BrakeActicity.png" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/a/a6/BrakeActicity.png" descriptionurl="http://eudp.net/index.php/File:BrakeActicity.png" ns="6" title="File:BrakeActicity.png" />
      <img name="Bund_left_corner.PNG" timestamp="2016-06-14T11:47:14Z" url="http://eudp.net/images/f/ff/Bund_left_corner.PNG" descriptionurl="http://eudp.net/index.php/File:Bund_left_corner.PNG" ns="6" title="File:Bund left corner.PNG" />
    </allimages>
  </query>
</api>