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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <allcategories accontinue="《變局中的台灣未來》" />
  </query-continue>
  <query>
    <allcategories>
      <c size="1" pages="1" files="0" subcats="0" xml:space="preserve">2015論壇</c>
      <c size="4" pages="4" files="0" subcats="0" xml:space="preserve">2020總統及立委候選人承諾書</c>
      <c size="0" pages="0" files="0" subcats="0" xml:space="preserve">2022論壇</c>
      <c size="10" pages="10" files="0" subcats="0" xml:space="preserve">20240414之前</c>
      <c size="3" pages="0" files="0" subcats="3" xml:space="preserve">2025台灣實驗教育國是會議期前討論</c>
      <c size="6" pages="6" files="0" subcats="0" xml:space="preserve">AI</c>
      <c size="3" pages="3" files="0" subcats="0" xml:space="preserve">Etherpad</c>
      <c size="3" pages="3" files="0" subcats="0" xml:space="preserve">Node.js</c>
      <c size="7" pages="7" files="0" subcats="0" xml:space="preserve">OST</c>
      <c size="2" pages="2" files="0" subcats="0" xml:space="preserve">OpenStreetMap</c>
    </allcategories>
  </query>
</api>