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="Pantallazo-Cola-de-descarga.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Datos0.png" timestamp="2008-06-09T13:19:42Z" url="http://wiki.amule.org/w/images/b/ba/Datos0.png" descriptionurl="http://wiki.amule.org/wiki/File:Datos0.png" ns="6" title="File:Datos0.png" />
      <img name="Doro-Fear_no_evil.jpg" timestamp="2009-07-12T12:30:52Z" url="http://wiki.amule.org/w/images/9/90/Doro-Fear_no_evil.jpg" descriptionurl="http://wiki.amule.org/wiki/File:Doro-Fear_no_evil.jpg" ns="6" title="File:Doro-Fear no evil.jpg" />
      <img name="Ed2k-ff3.png" timestamp="2008-06-06T19:34:14Z" url="http://wiki.amule.org/w/images/d/da/Ed2k-ff3.png" descriptionurl="http://wiki.amule.org/wiki/File:Ed2k-ff3.png" ns="6" title="File:Ed2k-ff3.png" />
      <img name="Ed2k-op.png" timestamp="2008-06-06T19:56:28Z" url="http://wiki.amule.org/w/images/3/33/Ed2k-op.png" descriptionurl="http://wiki.amule.org/wiki/File:Ed2k-op.png" ns="6" title="File:Ed2k-op.png" />
      <img name="Firefox_ed2k_link.PNG" timestamp="2008-07-09T15:59:42Z" url="http://wiki.amule.org/w/images/5/5d/Firefox_ed2k_link.PNG" descriptionurl="http://wiki.amule.org/wiki/File:Firefox_ed2k_link.PNG" ns="6" title="File:Firefox ed2k link.PNG" />
      <img name="Jmule_screen2.png" timestamp="2009-05-25T13:02:05Z" url="http://wiki.amule.org/w/images/a/ad/Jmule_screen2.png" descriptionurl="http://wiki.amule.org/wiki/File:Jmule_screen2.png" ns="6" title="File:Jmule screen2.png" />
      <img name="Jmule_screen5.png" timestamp="2009-05-25T12:58:23Z" url="http://wiki.amule.org/w/images/e/e0/Jmule_screen5.png" descriptionurl="http://wiki.amule.org/wiki/File:Jmule_screen5.png" ns="6" title="File:Jmule screen5.png" />
      <img name="Limits_aMuleSVN_Fedora_Gnome.png" timestamp="2008-06-03T04:21:04Z" url="http://wiki.amule.org/w/images/5/5b/Limits_aMuleSVN_Fedora_Gnome.png" descriptionurl="http://wiki.amule.org/wiki/File:Limits_aMuleSVN_Fedora_Gnome.png" ns="6" title="File:Limits aMuleSVN Fedora Gnome.png" />
      <img name="Opera_preferences_programs.PNG" timestamp="2008-07-09T16:08:24Z" url="http://wiki.amule.org/w/images/0/0c/Opera_preferences_programs.PNG" descriptionurl="http://wiki.amule.org/wiki/File:Opera_preferences_programs.PNG" ns="6" title="File:Opera preferences programs.PNG" />
      <img name="Opera_protocols_ed2k.PNG" timestamp="2008-07-09T16:10:49Z" url="http://wiki.amule.org/w/images/c/c6/Opera_protocols_ed2k.PNG" descriptionurl="http://wiki.amule.org/wiki/File:Opera_protocols_ed2k.PNG" ns="6" title="File:Opera protocols ed2k.PNG" />
    </allimages>
  </query>
</api>