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="20160226152727|Ale_war_zip.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Currenttagsmenu.png" timestamp="2016-05-02T12:51:03Z" user="Bppause" url="http://wiki.rifidi.net/images/d/d0/Currenttagsmenu.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Currenttagsmenu.png" ns="6" title="File:Currenttagsmenu.png" />
      <img name="Currenttagsview.png" timestamp="2016-05-02T12:49:00Z" user="Bppause" url="http://wiki.rifidi.net/images/b/b3/Currenttagsview.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Currenttagsview.png" ns="6" title="File:Currenttagsview.png" />
      <img name="Tomcat_ale_app.png" timestamp="2016-02-26T15:29:42Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/9/9e/Tomcat_ale_app.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Tomcat_ale_app.png" ns="6" title="File:Tomcat ale app.png" />
      <img name="Apache_tomcat_deployed_file.png" timestamp="2016-02-26T15:29:30Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/2/22/Apache_tomcat_deployed_file.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_deployed_file.png" ns="6" title="File:Apache tomcat deployed file.png" />
      <img name="Apache_tomcat_deploy_file.png" timestamp="2016-02-26T15:29:16Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/1/13/Apache_tomcat_deploy_file.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_deploy_file.png" ns="6" title="File:Apache tomcat deploy file.png" />
      <img name="Apache_tomcat_open_file.png" timestamp="2016-02-26T15:29:03Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/6/60/Apache_tomcat_open_file.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_open_file.png" ns="6" title="File:Apache tomcat open file.png" />
      <img name="Apache_tomcat_choose_file.png" timestamp="2016-02-26T15:28:38Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/4/44/Apache_tomcat_choose_file.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_choose_file.png" ns="6" title="File:Apache tomcat choose file.png" />
      <img name="Apache_tomcat_app_console.png" timestamp="2016-02-26T15:28:27Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/0/0f/Apache_tomcat_app_console.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_app_console.png" ns="6" title="File:Apache tomcat app console.png" />
      <img name="Apache_tomcat_authentication.png" timestamp="2016-02-26T15:28:00Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/4/4c/Apache_tomcat_authentication.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_authentication.png" ns="6" title="File:Apache tomcat authentication.png" />
      <img name="Apache_tomcat_managerapp_link.png" timestamp="2016-02-26T15:27:42Z" user="Manuel transcends" url="http://wiki.rifidi.net/images/1/12/Apache_tomcat_managerapp_link.png" descriptionurl="http://wiki.rifidi.net/index.php/File:Apache_tomcat_managerapp_link.png" ns="6" title="File:Apache tomcat managerapp link.png" />
    </allimages>
  </query>
</api>