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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>
    <pageswithprop pwpcontinue="19" />
  </query-continue>
  <query>
    <pageswithprop>
      <page pageid="3" ns="100" title="en:Trial" value="THRONE Emulator" />
      <page pageid="4" ns="102" title="ru:Trial" value="Эмулятор THRONE" />
      <page pageid="5" ns="102" title="ru:Studio" value="Приложение T-Studio: Что это такое и как с ним работать?" />
      <page pageid="6" ns="100" title="en:Studio" value="T-Studio: What Is It and How To Work In It?" />
      <page pageid="9" ns="100" title="en:Throne" value="Guide for working with THRONE system and related processes" />
      <page pageid="10" ns="102" title="ru:Throne" value="Справочник по работе с системой THRONE" />
      <page pageid="15" ns="102" title="ru:Studio/Interface/PanelProjects" value="T-Studio - Проекты" />
      <page pageid="16" ns="102" title="ru:Studio/Interface/PanelLocations" value="T-Studio - Локации" />
      <page pageid="17" ns="102" title="ru:Videocourses" value="Видеокурсы" />
      <page pageid="18" ns="102" title="ru:Studio/Interface/PanelEquipment" value="T-Studio - Конечное оборудование" />
    </pageswithprop>
  </query>
</api>