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="Конституция_1977.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="Image1219.jpg" timestamp="2016-07-07T10:13:04Z" url="https://history.kantiana.ru/images/e/e8/Image1219.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Image1219.jpg" ns="6" title="Файл:Image1219.jpg" />
      <img name="Logo.png" timestamp="2016-04-13T21:48:03Z" url="https://history.kantiana.ru/images/c/c9/Logo.png" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Logo.png" ns="6" title="Файл:Logo.png" />
      <img name="Plakat_45+354.jpg" timestamp="2016-07-07T09:56:52Z" url="https://history.kantiana.ru/images/c/c1/Plakat_45%2B354.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Plakat_45%2B354.jpg" ns="6" title="Файл:Plakat 45+354.jpg" />
      <img name="Slide.png" timestamp="2016-06-24T12:46:01Z" url="https://history.kantiana.ru/images/9/95/Slide.png" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Slide.png" ns="6" title="Файл:Slide.png" />
      <img name="Все_на_выборы.jpg" timestamp="2016-07-07T10:22:58Z" url="https://history.kantiana.ru/images/0/04/%D0%92%D1%81%D0%B5_%D0%BD%D0%B0_%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D1%8B.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%92%D1%81%D0%B5_%D0%BD%D0%B0_%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D1%8B.jpg" ns="6" title="Файл:Все на выборы.jpg" />
      <img name="Все_на_выборы_1961.jpg" timestamp="2016-07-07T10:57:58Z" url="https://history.kantiana.ru/images/d/d5/%D0%92%D1%81%D0%B5_%D0%BD%D0%B0_%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D1%8B_1961.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%92%D1%81%D0%B5_%D0%BD%D0%B0_%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D1%8B_1961.jpg" ns="6" title="Файл:Все на выборы 1961.jpg" />
      <img name="День_филологического_факультета.jpg" timestamp="2016-04-13T17:24:24Z" url="https://history.kantiana.ru/images/7/78/%D0%94%D0%B5%D0%BD%D1%8C_%D1%84%D0%B8%D0%BB%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B3%D0%BE_%D1%84%D0%B0%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D0%B5%D1%82%D0%B0.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%94%D0%B5%D0%BD%D1%8C_%D1%84%D0%B8%D0%BB%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B3%D0%BE_%D1%84%D0%B0%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D0%B5%D1%82%D0%B0.jpg" ns="6" title="Файл:День филологического факультета.jpg" />
      <img name="Избирательные_комиссии.jpg" timestamp="2016-07-07T10:52:29Z" url="https://history.kantiana.ru/images/2/22/%D0%98%D0%B7%D0%B1%D0%B8%D1%80%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5_%D0%BA%D0%BE%D0%BC%D0%B8%D1%81%D1%81%D0%B8%D0%B8.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%98%D0%B7%D0%B1%D0%B8%D1%80%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5_%D0%BA%D0%BE%D0%BC%D0%B8%D1%81%D1%81%D0%B8%D0%B8.jpg" ns="6" title="Файл:Избирательные комиссии.jpg" />
      <img name="Их_имена_назвал_народ.jpg" timestamp="2016-07-07T11:26:32Z" url="https://history.kantiana.ru/images/d/d1/%D0%98%D1%85_%D0%B8%D0%BC%D0%B5%D0%BD%D0%B0_%D0%BD%D0%B0%D0%B7%D0%B2%D0%B0%D0%BB_%D0%BD%D0%B0%D1%80%D0%BE%D0%B4.jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%98%D1%85_%D0%B8%D0%BC%D0%B5%D0%BD%D0%B0_%D0%BD%D0%B0%D0%B7%D0%B2%D0%B0%D0%BB_%D0%BD%D0%B0%D1%80%D0%BE%D0%B4.jpg" ns="6" title="Файл:Их имена назвал народ.jpg" />
      <img name="Клемешев_А.П..jpg" timestamp="2016-04-14T14:17:18Z" url="https://history.kantiana.ru/images/2/21/%D0%9A%D0%BB%D0%B5%D0%BC%D0%B5%D1%88%D0%B5%D0%B2_%D0%90.%D0%9F..jpg" descriptionurl="https://history.kantiana.ru/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%9A%D0%BB%D0%B5%D0%BC%D0%B5%D1%88%D0%B5%D0%B2_%D0%90.%D0%9F..jpg" ns="6" title="Файл:Клемешев А.П..jpg" />
    </allimages>
  </query>
</api>