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="01_Explore_Starter_8051.PNG" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2336" ns="6" title="File:0-M3-glcd-demo.JPG" />
      <page pageid="2880" ns="6" title="File:00Aws arduino esp32.jpg">
        <duplicatefiles>
          <df name="Aws_arduino_esp32.jpg" user="Sandeep" timestamp="2017-04-13T12:48:13Z" />
        </duplicatefiles>
      </page>
      <page pageid="1994" ns="6" title="File:00Interface RTC with Atmega128.gif" />
      <page pageid="1882" ns="6" title="File:00 Lpc1768 Timer.jpg" />
      <page pageid="1859" ns="6" title="File:00 Lpc7168 Keil.png" />
      <page pageid="2236" ns="6" title="File:01Kiel.PNG">
        <duplicatefiles>
          <df name="Kiel4.png" user="Sharana" timestamp="2016-05-06T06:35:10Z" />
        </duplicatefiles>
      </page>
      <page pageid="2210" ns="6" title="File:01LCD 4Bit Mode.gif" />
      <page pageid="2212" ns="6" title="File:01LCD 4bit.png">
        <duplicatefiles>
          <df name="LCD_4bit.png" user="Sharana" timestamp="2016-05-05T04:53:13Z" />
        </duplicatefiles>
      </page>
      <page pageid="2213" ns="6" title="File:01LCD 8bit.png" />
      <page pageid="2237" ns="6" title="File:01Lcd 16x2.png" />
    </pages>
  </query>
</api>