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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>
    <allredirects arcontinue="Unternehmensberatung_Wenzel_-_DIN_14675_Zertifizierung|1633" />
  </query-continue>
  <query>
    <allredirects>
      <r fromid="463" ns="0" title="BE-Plan GmbH &amp; Co. KG" />
      <r fromid="186" ns="0" title="Brandmelderzentralen DIN EN 54-2" />
      <r fromid="21" ns="0" title="Definition Vorbeugender Brandschutz" />
      <r fromid="307" ns="0" title="Feuerwehr-Anzeigetableau" />
      <r fromid="188" ns="0" title="Flammenmelder DIN EN 54 Teil 10" />
      <r fromid="419" ns="0" title="Kompaktschaum" />
      <r fromid="189" ns="0" title="Krefeld" />
      <r fromid="568" ns="0" title="RSGAG" />
      <r fromid="187" ns="0" title="Rauchmelder linear DIN EN 54 Teil 12" />
      <r fromid="377" ns="0" title="Total Walther GmbH" />
    </allredirects>
  </query>
</api>