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="Howto1_step1.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="Capture-Ella.png" timestamp="2010-06-08T18:32:07Z" url="http://download.tuxfamily.org/ella/wiki//b/be/Capture-Ella.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Capture-Ella.png" ns="6" title="File:Capture-Ella.png" />
      <img name="Capture.png" timestamp="2010-08-24T14:18:49Z" url="http://download.tuxfamily.org/ella/wiki//8/8a/Capture.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Capture.png" ns="6" title="File:Capture.png" />
      <img name="Capture_16_jun_2010.jpg" timestamp="2010-06-16T20:20:24Z" url="http://download.tuxfamily.org/ella/wiki//0/05/Capture_16_jun_2010.jpg" descriptionurl="https://ella.tuxfamily.org/wiki/File:Capture_16_jun_2010.jpg" ns="6" title="File:Capture 16 jun 2010.jpg" />
      <img name="Capture_bibella.png" timestamp="2010-10-25T09:53:14Z" url="http://download.tuxfamily.org/ella/wiki//3/36/Capture_bibella.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Capture_bibella.png" ns="6" title="File:Capture bibella.png" />
      <img name="Coverflow-1.png" timestamp="2010-08-25T11:06:38Z" url="http://download.tuxfamily.org/ella/wiki//f/f2/Coverflow-1.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Coverflow-1.png" ns="6" title="File:Coverflow-1.png" />
      <img name="Drawing_toolbar.png" timestamp="2010-10-24T09:38:43Z" url="http://download.tuxfamily.org/ella/wiki//3/38/Drawing_toolbar.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Drawing_toolbar.png" ns="6" title="File:Drawing toolbar.png" />
      <img name="Ecran.png" timestamp="2010-10-23T12:14:34Z" url="http://download.tuxfamily.org/ella/wiki//f/f7/Ecran.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Ecran.png" ns="6" title="File:Ecran.png" />
      <img name="Ecran2.png" timestamp="2010-10-23T14:05:48Z" url="http://download.tuxfamily.org/ella/wiki//6/6e/Ecran2.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Ecran2.png" ns="6" title="File:Ecran2.png" />
      <img name="File_dezipped.png" timestamp="2010-06-24T09:48:29Z" url="http://download.tuxfamily.org/ella/wiki//b/bc/File_dezipped.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:File_dezipped.png" ns="6" title="File:File dezipped.png" />
      <img name="Horizontal_toolbar.png" timestamp="2010-10-24T09:34:09Z" url="http://download.tuxfamily.org/ella/wiki//3/3b/Horizontal_toolbar.png" descriptionurl="https://ella.tuxfamily.org/wiki/File:Horizontal_toolbar.png" ns="6" title="File:Horizontal toolbar.png" />
    </allimages>
  </query>
</api>