You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaifrom="02 04 - Prey ArboretumVista Dec16.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="3179" ns="6" title="File:&#039;Prey&#039; - Fandom Plays The First Hour" />
      <page pageid="3598" ns="6" title="File:&#039;Stranger Things&#039; Season 2 Teaser Premiered During The Super Bowl" />
      <page pageid="2348" ns="6" title="File:007-pupplestorm.jpg" />
      <page pageid="3150" ns="6" title="File:01 26 - Prey MimicSwarm Dec16.jpg" />
      <page pageid="3153" ns="6" title="File:01 29 - Prey PhantomStrike Dec16.jpg" />
      <page pageid="3151" ns="6" title="File:01 29 - Prey Phantoms QC16.jpg" />
      <page pageid="3152" ns="6" title="File:01 29 - Prey Phantoms QC16 logo.jpg" />
      <page pageid="3154" ns="6" title="File:02 02 - Prey ConceptLobby GC16.jpg" />
      <page pageid="3156" ns="6" title="File:02 02 - Prey LobbyToShuttleBay Dec16.jpg" />
      <page pageid="3157" ns="6" title="File:02 02 - Prey TalosLobby1 Dec16.jpg" />
    </pages>
  </query>
</api>