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 gaicontinue="Abnormal_cannabidoil_-_Weed_Depot.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1208" ns="6" title="File:-Super High Me.jpg" />
      <page pageid="1282" ns="6" title="File:1024px-Waterfall bong diagram.png">
        <duplicatefiles>
          <df name="Waterfall_bong_diagram.png" user="Adm1n" timestamp="2015-02-26T20:55:11Z" />
        </duplicatefiles>
      </page>
      <page pageid="669" ns="6" title="File:120px-HOOTER2.jpg" />
      <page pageid="1720" ns="6" title="File:1786 CHAMELEON MantisWebBanners2015 Monsoon 728x90-V1-R2.jpg" />
      <page pageid="172" ns="6" title="File:420 Louis.jpeg" />
      <page pageid="175" ns="6" title="File:5 dollars.jpeg" />
      <page pageid="936" ns="6" title="File:640px-Huatuo-longshansi.jpg">
        <duplicatefiles>
          <df name="Huatuo-longshansi.jpg" user="Adm1n" timestamp="2015-02-22T21:37:36Z" />
        </duplicatefiles>
      </page>
      <page pageid="957" ns="6" title="File:710 - Weed Depot.jpg" />
      <page pageid="850" ns="6" title="File:800px-Balls and sticks of Charas.jpg">
        <duplicatefiles>
          <df name="Balls_and_sticks_of_Charas.jpg" user="Adm1n" timestamp="2015-02-17T04:33:11Z" />
        </duplicatefiles>
      </page>
      <page pageid="851" ns="6" title="File:800px-Tosh Valley charas.jpg">
        <duplicatefiles>
          <df name="Tosh_Valley_charas.jpg" user="Adm1n" timestamp="2015-02-17T04:33:54Z" />
        </duplicatefiles>
      </page>
    </pages>
  </query>
</api>