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 aistart="2007-11-19T16:14:23Z" />
  </query-continue>
  <query>
    <allimages>
      <img name="12345.JPG" timestamp="2010-06-19T10:47:26Z" user="AssaCom" url="https://sfz.schattenkind.net:80/wiki/images/f/fb/12345.JPG" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:12345.JPG" ns="6" title="File:12345.JPG" />
      <img name="20080104213830_410.jpg" timestamp="2008-01-04T20:52:45Z" user="Hagish" url="https://sfz.schattenkind.net:80/wiki/images/4/47/20080104213830_410.jpg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20080104213830_410.jpg" ns="6" title="File:20080104213830 410.jpg" />
      <img name="20080104213905_754.jpg" timestamp="2008-01-04T20:50:23Z" user="Hagish" url="https://sfz.schattenkind.net:80/wiki/images/5/51/20080104213905_754.jpg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20080104213905_754.jpg" ns="6" title="File:20080104213905 754.jpg" />
      <img name="20080104213900_317.jpg" timestamp="2008-01-04T20:49:40Z" user="Hagish" url="https://sfz.schattenkind.net:80/wiki/images/e/e5/20080104213900_317.jpg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20080104213900_317.jpg" ns="6" title="File:20080104213900 317.jpg" />
      <img name="20080104213855_798.jpg" timestamp="2008-01-04T20:49:00Z" user="Hagish" url="https://sfz.schattenkind.net:80/wiki/images/5/51/20080104213855_798.jpg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20080104213855_798.jpg" ns="6" title="File:20080104213855 798.jpg" />
      <img name="20080104213836_299.jpg" timestamp="2008-01-04T20:48:31Z" user="Hagish" url="https://sfz.schattenkind.net:80/wiki/images/c/ce/20080104213836_299.jpg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20080104213836_299.jpg" ns="6" title="File:20080104213836 299.jpg" />
      <img name="20080104213835_948.jpg" timestamp="2008-01-04T20:48:00Z" user="Hagish" url="https://sfz.schattenkind.net:80/wiki/images/b/b5/20080104213835_948.jpg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20080104213835_948.jpg" ns="6" title="File:20080104213835 948.jpg" />
      <img name="TractorBeam01.ogg" timestamp="2007-11-26T20:01:53Z" user="Ghoulsblade" url="https://sfz.schattenkind.net:80/wiki/images/7/75/TractorBeam01.ogg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:TractorBeam01.ogg" ns="6" title="File:TractorBeam01.ogg" />
      <img name="Interior.ogg" timestamp="2007-11-22T15:17:47Z" user="Ghoulsblade" url="https://sfz.schattenkind.net:80/wiki/images/7/72/Interior.ogg" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:Interior.ogg" ns="6" title="File:Interior.ogg" />
      <img name="20071120221401_148.png" timestamp="2007-11-20T21:17:05Z" user="Ghoulsblade" url="https://sfz.schattenkind.net:80/wiki/images/c/c7/20071120221401_148.png" descriptionurl="https://sfz.schattenkind.net:80/wiki/index.php/File:20071120221401_148.png" ns="6" title="File:20071120221401 148.png" />
    </allimages>
  </query>
</api>