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="Exchhost2013_multisendcon_newaccount_step_1.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Choix_Type_De_Connexion_OpenVPN_Server_ipFire.png" timestamp="2014-04-15T09:33:32Z" url="http://wiki.giroudmathias.ch/images/0/0c/Choix_Type_De_Connexion_OpenVPN_Server_ipFire.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Choix_Type_De_Connexion_OpenVPN_Server_ipFire.png" ns="6" title="Fichier:Choix Type De Connexion OpenVPN Server ipFire.png" />
      <img name="Configuration_Connexion_OpenVPN_Server_ipFire.png" timestamp="2014-04-15T09:30:35Z" url="http://wiki.giroudmathias.ch/images/2/2f/Configuration_Connexion_OpenVPN_Server_ipFire.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Configuration_Connexion_OpenVPN_Server_ipFire.png" ns="6" title="Fichier:Configuration Connexion OpenVPN Server ipFire.png" />
      <img name="Configurer_Autorité_De_Certification_OpenVPN_Server_ipFire.png" timestamp="2014-04-15T09:16:36Z" url="http://wiki.giroudmathias.ch/images/f/f0/Configurer_Autorit%C3%A9_De_Certification_OpenVPN_Server_ipFire.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Configurer_Autorit%C3%A9_De_Certification_OpenVPN_Server_ipFire.png" ns="6" title="Fichier:Configurer Autorité De Certification OpenVPN Server ipFire.png" />
      <img name="Configurer_OpenVPN_Server_ipFire.png" timestamp="2014-04-15T09:14:04Z" url="http://wiki.giroudmathias.ch/images/5/5d/Configurer_OpenVPN_Server_ipFire.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Configurer_OpenVPN_Server_ipFire.png" ns="6" title="Fichier:Configurer OpenVPN Server ipFire.png" />
      <img name="Exchhost2013_ad_newaccount_step_1.png" timestamp="2015-03-12T19:57:55Z" url="http://wiki.giroudmathias.ch/images/7/7c/Exchhost2013_ad_newaccount_step_1.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Exchhost2013_ad_newaccount_step_1.png" ns="6" title="Fichier:Exchhost2013 ad newaccount step 1.png" />
      <img name="Exchhost2013_ad_newaccount_step_2.png" timestamp="2015-03-12T19:58:13Z" url="http://wiki.giroudmathias.ch/images/0/03/Exchhost2013_ad_newaccount_step_2.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Exchhost2013_ad_newaccount_step_2.png" ns="6" title="Fichier:Exchhost2013 ad newaccount step 2.png" />
      <img name="Exchhost2013_exch_newaccount_step_1.png" timestamp="2015-03-12T23:00:38Z" url="http://wiki.giroudmathias.ch/images/9/90/Exchhost2013_exch_newaccount_step_1.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Exchhost2013_exch_newaccount_step_1.png" ns="6" title="Fichier:Exchhost2013 exch newaccount step 1.png" />
      <img name="Exchhost2013_exch_newaccount_step_2.png" timestamp="2015-03-12T22:38:18Z" url="http://wiki.giroudmathias.ch/images/6/66/Exchhost2013_exch_newaccount_step_2.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Exchhost2013_exch_newaccount_step_2.png" ns="6" title="Fichier:Exchhost2013 exch newaccount step 2.png" />
      <img name="Exchhost2013_exch_newaccount_step_3.png" timestamp="2015-03-12T23:05:15Z" url="http://wiki.giroudmathias.ch/images/0/02/Exchhost2013_exch_newaccount_step_3.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Exchhost2013_exch_newaccount_step_3.png" ns="6" title="Fichier:Exchhost2013 exch newaccount step 3.png" />
      <img name="Exchhost2013_exch_newaccount_step_4.png" timestamp="2015-03-12T23:02:26Z" url="http://wiki.giroudmathias.ch/images/0/07/Exchhost2013_exch_newaccount_step_4.png" descriptionurl="http://wiki.giroudmathias.ch/index.php?title=Fichier:Exchhost2013_exch_newaccount_step_4.png" ns="6" title="Fichier:Exchhost2013 exch newaccount step 4.png" />
    </allimages>
  </query>
</api>