You are looking at the HTML representation of the XML format.
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>
    <allimages gaicontinue="10_Alla_vinklar_400.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="942" ns="6" title="Fil:02 Trigonometriska ettan 1.jpg" />
      <page pageid="946" ns="6" title="Fil:02 Trigonometriska ettan Facit.jpg" />
      <page pageid="944" ns="6" title="Fil:02 Trigonometriska ettan Ovningar.jpg" />
      <page pageid="986" ns="6" title="Fil:03 Enhetscirkel Kurvor Cosinus.jpg">
        <duplicatefiles>
          <df name="2_1_Enhetscirkel_Kurvor_Cosinus.jpg" user="Taifun" timestamp="2021-09-12T14:45:23Z" />
        </duplicatefiles>
      </page>
      <page pageid="985" ns="6" title="Fil:03 Enhetscirkel Kurvor Sinus.jpg">
        <duplicatefiles>
          <df name="2_1_Enhetscirkel_Kurvor_Sinus.jpg" user="Taifun" timestamp="2021-09-12T14:45:00Z" />
        </duplicatefiles>
      </page>
      <page pageid="964" ns="6" title="Fil:1.4 Facit Add Sub Formler.pdf" />
      <page pageid="963" ns="6" title="Fil:1.4 Ovn Add Sub Formler.pdf" />
      <page pageid="968" ns="6" title="Fil:1.5 Facit Dubbla vinkeln.pdf" />
      <page pageid="967" ns="6" title="Fil:1.5 Facit Dubbla vinkelna.pdf" />
      <page pageid="965" ns="6" title="Fil:1.5 Ovn Dubbla vinkeln.pdf" />
    </pages>
  </query>
</api>