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 aicontinue="20170512123124|Артур_нигметов.jpg" />
  </query-continue>
  <query>
    <allimages>
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      <img name="Кобеева_Алтынай.jpg" timestamp="2020-07-26T08:14:50Z" user="Moderator" url="http://ru.encyclopedia.kz/images/1/1b/%D0%9A%D0%BE%D0%B1%D0%B5%D0%B5%D0%B2%D0%B0_%D0%90%D0%BB%D1%82%D1%8B%D0%BD%D0%B0%D0%B9.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%9A%D0%BE%D0%B1%D0%B5%D0%B5%D0%B2%D0%B0_%D0%90%D0%BB%D1%82%D1%8B%D0%BD%D0%B0%D0%B9.jpg" ns="6" title="Файл:Кобеева Алтынай.jpg" />
      <img name="Кумписбай.jpg" timestamp="2020-01-30T07:03:18Z" user="Moderator" url="http://ru.encyclopedia.kz/images/7/74/%D0%9A%D1%83%D0%BC%D0%BF%D0%B8%D1%81%D0%B1%D0%B0%D0%B9.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%9A%D1%83%D0%BC%D0%BF%D0%B8%D1%81%D0%B1%D0%B0%D0%B9.jpg" ns="6" title="Файл:Кумписбай.jpg" />
      <img name="Vakil_Nabiev_Guseinovich_Kz.jpeg" timestamp="2020-01-03T17:01:29Z" user="Editor" url="http://ru.encyclopedia.kz/images/0/01/Vakil_Nabiev_Guseinovich_Kz.jpeg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Vakil_Nabiev_Guseinovich_Kz.jpeg" ns="6" title="Файл:Vakil Nabiev Guseinovich Kz.jpeg" />
      <img name="Vakil_Nabiev_Guseinovich.jpg" timestamp="2020-01-03T16:56:33Z" user="Editor" url="http://ru.encyclopedia.kz/images/3/3d/Vakil_Nabiev_Guseinovich.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Vakil_Nabiev_Guseinovich.jpg" ns="6" title="Файл:Vakil Nabiev Guseinovich.jpg" />
      <img name="Айкуне.jpg" timestamp="2019-04-29T07:02:28Z" user="Moderator" url="http://ru.encyclopedia.kz/images/0/0f/%D0%90%D0%B9%D0%BA%D1%83%D0%BD%D0%B5.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%90%D0%B9%D0%BA%D1%83%D0%BD%D0%B5.jpg" ns="6" title="Файл:Айкуне.jpg" />
      <img name="Абай_Баймагамбетов.jpg" timestamp="2019-04-29T06:59:22Z" user="Moderator" url="http://ru.encyclopedia.kz/images/c/c9/%D0%90%D0%B1%D0%B0%D0%B9_%D0%91%D0%B0%D0%B9%D0%BC%D0%B0%D0%B3%D0%B0%D0%BC%D0%B1%D0%B5%D1%82%D0%BE%D0%B2.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%90%D0%B1%D0%B0%D0%B9_%D0%91%D0%B0%D0%B9%D0%BC%D0%B0%D0%B3%D0%B0%D0%BC%D0%B1%D0%B5%D1%82%D0%BE%D0%B2.jpg" ns="6" title="Файл:Абай Баймагамбетов.jpg" />
      <img name="АГП.jpg" timestamp="2018-11-29T01:15:32Z" user="Moderator" url="http://ru.encyclopedia.kz/images/6/63/%D0%90%D0%93%D0%9F.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%90%D0%93%D0%9F.jpg" ns="6" title="Файл:АГП.jpg" />
      <img name="Бекнур_Кисиков.jpg" timestamp="2017-10-17T04:42:01Z" user="Moderator" url="http://ru.encyclopedia.kz/images/0/0b/%D0%91%D0%B5%D0%BA%D0%BD%D1%83%D1%80_%D0%9A%D0%B8%D1%81%D0%B8%D0%BA%D0%BE%D0%B2.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%91%D0%B5%D0%BA%D0%BD%D1%83%D1%80_%D0%9A%D0%B8%D1%81%D0%B8%D0%BA%D0%BE%D0%B2.jpg" ns="6" title="Файл:Бекнур Кисиков.jpg" />
      <img name="Роман_Ол_Бекнура_Кисикова.jpg" timestamp="2017-10-15T08:45:26Z" user="Moderator" url="http://ru.encyclopedia.kz/images/a/ae/%D0%A0%D0%BE%D0%BC%D0%B0%D0%BD_%D0%9E%D0%BB_%D0%91%D0%B5%D0%BA%D0%BD%D1%83%D1%80%D0%B0_%D0%9A%D0%B8%D1%81%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0.jpg" descriptionurl="http://ru.encyclopedia.kz/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%A0%D0%BE%D0%BC%D0%B0%D0%BD_%D0%9E%D0%BB_%D0%91%D0%B5%D0%BA%D0%BD%D1%83%D1%80%D0%B0_%D0%9A%D0%B8%D1%81%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0.jpg" ns="6" title="Файл:Роман Ол Бекнура Кисикова.jpg" />
    </allimages>
  </query>
</api>