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="2017-12-30T22:23:37Z" />
  </query-continue>
  <query>
    <allimages>
      <img name="Logo_shoutcast.png" timestamp="2018-11-04T15:34:39Z" user="Djegg" url="http://wiki.shoutcast.com/images/6/61/Logo_shoutcast.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Logo_shoutcast.png" ns="6" title="File:Logo shoutcast.png" />
      <img name="Input_tab_Soundcard.png" timestamp="2017-12-31T00:47:04Z" user="Djegg" url="http://wiki.shoutcast.com/images/e/e9/Input_tab_Soundcard.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Input_tab_Soundcard.png" ns="6" title="File:Input tab Soundcard.png" />
      <img name="Input_tab_Winamp.png" timestamp="2017-12-31T00:42:52Z" user="Djegg" url="http://wiki.shoutcast.com/images/6/64/Input_tab_Winamp.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Input_tab_Winamp.png" ns="6" title="File:Input tab Winamp.png" />
      <img name="Output_tab_Logs.png" timestamp="2017-12-31T00:37:44Z" user="Djegg" url="http://wiki.shoutcast.com/images/7/7d/Output_tab_Logs.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Output_tab_Logs.png" ns="6" title="File:Output tab Logs.png" />
      <img name="Output_tab_Artwork.png" timestamp="2017-12-31T00:36:27Z" user="Djegg" url="http://wiki.shoutcast.com/images/7/73/Output_tab_Artwork.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Output_tab_Artwork.png" ns="6" title="File:Output tab Artwork.png" />
      <img name="Output_tab_Titles.png" timestamp="2017-12-31T00:33:06Z" user="Djegg" url="http://wiki.shoutcast.com/images/5/5e/Output_tab_Titles.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Output_tab_Titles.png" ns="6" title="File:Output tab Titles.png" />
      <img name="Output_tab_Encoder.png" timestamp="2017-12-31T00:31:42Z" user="Djegg" url="http://wiki.shoutcast.com/images/0/07/Output_tab_Encoder.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Output_tab_Encoder.png" ns="6" title="File:Output tab Encoder.png" />
      <img name="Output_tab_Directory.png" timestamp="2017-12-31T00:29:44Z" user="Djegg" url="http://wiki.shoutcast.com/images/7/7c/Output_tab_Directory.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Output_tab_Directory.png" ns="6" title="File:Output tab Directory.png" />
      <img name="Output_tab_configuration.png" timestamp="2017-12-30T23:37:26Z" user="Djegg" url="http://wiki.shoutcast.com/images/c/c9/Output_tab_configuration.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Output_tab_configuration.png" ns="6" title="File:Output tab configuration.png" />
      <img name="Summary_tab_1.png" timestamp="2017-12-30T22:49:22Z" user="Djegg" url="http://wiki.shoutcast.com/images/1/18/Summary_tab_1.png" descriptionurl="http://wiki.shoutcast.com/wiki/File:Summary_tab_1.png" ns="6" title="File:Summary tab 1.png" />
    </allimages>
  </query>
</api>