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"?>
    <allfileusages gafcontinue="Just_dude_it_3.jpg" />
      <page pageid="55" ns="6" title="File:Banana gun.jpg" />
      <page pageid="28" ns="6" title="File:Chair.jpeg" />
      <page pageid="30" ns="6" title="File:CountyPolice.jpg" />
      <page pageid="175" ns="6" title="File:Cutout1 web.jpg" />
      <page pageid="123" ns="6" title="File:Debrisfield2.jpg" />
      <page pageid="32" ns="6" title="File:Dude rance.jpg" />
      <page pageid="108" ns="6" title="File:Heyya.jpg" />
      <page pageid="37" ns="6" title="File:Just do it jesus.png" />
      <page pageid="34" ns="6" title="File:Just dude it.jpg" />
      <page pageid="33" ns="6" title="File:Just dude it 2.jpg" />