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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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20160116001435" timestamp="2016-01-16T00:14:35Z" ns="0" title="Ревизские сказки" />
        <page value="20160116001511" timestamp="2016-01-16T00:15:11Z" ns="0" title="Обыскная книга" />
        <page value="20160116001847" timestamp="2016-01-16T00:18:47Z" ns="0" title="Клировая ведомость" />
        <page value="20160116001926" timestamp="2016-01-16T00:19:26Z" ns="0" title="Метрическая книга" />
        <page value="20160116002053" timestamp="2016-01-16T00:20:53Z" ns="0" title="Исповедная роспись" />
        <page value="20160116002131" timestamp="2016-01-16T00:21:31Z" ns="0" title="Брачный обыск" />
        <page value="20160116002527" timestamp="2016-01-16T00:25:27Z" ns="0" title="Закон Республики Беларусь «Об информации, информатизации и защите информации»" />
        <page value="20160116015935" timestamp="2016-01-16T01:59:35Z" ns="0" title="Заглавная страница" />
        <page value="20160116225612" timestamp="2016-01-16T22:56:12Z" ns="0" title="Альшук" />
        <page value="20160116225654" timestamp="2016-01-16T22:56:54Z" ns="0" title="Беланович" />
      </results>
    </querypage>
  </query>
</api>