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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>
    <allfileusages gafcontinue="Enterprise_wikis_wm2011_kaempgen.pdf" />
  </query-continue>
  <query>
    <pages>
      <page pageid="261" ns="6" title="File:Benedikt 2023.jpg" />
      <page pageid="262" ns="6" title="File:Benedikt eHealth Symposium Südwest 2023 - ChatGPT small.jpg" />
      <page pageid="144" ns="6" title="File:Breucker kaempgen harth seo4olap BDSDST 2016 cr 2016-06-27.pdf" />
      <page pageid="123" ns="6" title="File:Breucker kaempgen harth seo4olap praesentation 2016-09-26 v5.pdf" />
      <page pageid="136" ns="6" title="File:CURAC kaempgen maerz et al liver factors pre-final.pdf" />
      <page pageid="234" ns="6" title="File:Catalina bigger 5 runs test including slice 2013-10-22 v4.png" />
      <page pageid="235" ns="6" title="File:Cellset schematically.png" />
      <page pageid="143" ns="6" title="File:Che in-use-paper iswc 2016.pdf" />
      <page pageid="137" ns="6" title="File:Cold2014 GemmekeMPGWKNMR.pdf" />
      <page pageid="128" ns="6" title="File:Ddm kaempgen deris.pdf" />
    </pages>
  </query>
</api>