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>
    <images imcontinue="1|Oct18_DV_Flyer.PNG" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <images>
          <im ns="6" title="File:2007-2017 PIT Trends Westchester.png" />
          <im ns="6" title="File:2013 Government officials (1).doc" />
          <im ns="6" title="File:County sued over affordable housing.pdf" />
          <im ns="6" title="File:Current PH gauge.jpg" />
          <im ns="6" title="File:HEARTH v1K.ppt" />
          <im ns="6" title="File:KB Budget Testimony 2010.doc" />
          <im ns="6" title="File:KB NAMI PPT F.ppt" />
          <im ns="6" title="File:KB WTFCAN Truancy F.ppt" />
          <im ns="6" title="File:KBertrand EBT ANYSYB v5.ppt" />
          <im ns="6" title="File:MVCTRI 6-1-11.ppt" />
        </images>
      </page>
    </pages>
  </query>
</api>