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="18650_cell_holder_-_battery_tab_spring01.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="761" ns="6" title="File:!Blabs metal shop.jpg" />
      <page pageid="305" ns="6" title="File:!Laser.xls.zip" />
      <page pageid="581" ns="6" title="File:10 bottom popped out.jpg" />
      <page pageid="582" ns="6" title="File:11 remove back.jpg" />
      <page pageid="915" ns="6" title="File:12 Pegasus Frame v2.pdf" />
      <page pageid="914" ns="6" title="File:12 Pegasus Printer.pdf" />
      <page pageid="583" ns="6" title="File:12 rubber jack seal.jpg" />
      <page pageid="584" ns="6" title="File:13 keypad.jpg" />
      <page pageid="585" ns="6" title="File:14 disassembled.jpg" />
      <page pageid="826" ns="6" title="File:18650 cell holder01.jpg" />
    </pages>
  </query>
</api>