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="Doktor-mystectvoznavstva-bo.gif" />
  </query-continue>
  <query>
    <allimages>
      <img name="Bg_main_bot.jpg" timestamp="2008-02-07T16:56:21Z" url="https://vuam.org.ua/images/2/2b/Bg_main_bot.jpg" descriptionurl="https://vuam.org.ua/uk/File:Bg_main_bot.jpg" ns="6" title="File:Bg main bot.jpg" />
      <img name="Bg_main_mif.jpg" timestamp="2008-02-07T16:46:52Z" url="https://vuam.org.ua/images/6/6a/Bg_main_mif.jpg" descriptionurl="https://vuam.org.ua/uk/File:Bg_main_mif.jpg" ns="6" title="File:Bg main mif.jpg" />
      <img name="Bg_main_top.jpg" timestamp="2008-02-07T16:53:54Z" url="https://vuam.org.ua/images/8/89/Bg_main_top.jpg" descriptionurl="https://vuam.org.ua/uk/File:Bg_main_top.jpg" ns="6" title="File:Bg main top.jpg" />
      <img name="Blok.jpg" timestamp="2010-11-17T21:06:28Z" url="https://vuam.org.ua/images/6/6c/Blok.jpg" descriptionurl="https://vuam.org.ua/uk/File:Blok.jpg" ns="6" title="File:Blok.jpg" />
      <img name="Bogorodycia.jpg" timestamp="2010-11-17T20:30:28Z" url="https://vuam.org.ua/images/8/86/Bogorodycia.jpg" descriptionurl="https://vuam.org.ua/uk/File:Bogorodycia.jpg" ns="6" title="File:Bogorodycia.jpg" />
      <img name="Chersonesos_columns.jpg" timestamp="2015-02-01T16:45:23Z" url="https://vuam.org.ua/images/9/96/Chersonesos_columns.jpg" descriptionurl="https://vuam.org.ua/uk/File:Chersonesos_columns.jpg" ns="6" title="File:Chersonesos columns.jpg" />
      <img name="Chvylyna-movczannia.JPG" timestamp="2014-01-31T14:07:40Z" url="https://vuam.org.ua/images/d/de/Chvylyna-movczannia.JPG" descriptionurl="https://vuam.org.ua/uk/File:Chvylyna-movczannia.JPG" ns="6" title="File:Chvylyna-movczannia.JPG" />
      <img name="Col_bg.gif" timestamp="2008-02-08T14:18:50Z" url="https://vuam.org.ua/images/c/c7/Col_bg.gif" descriptionurl="https://vuam.org.ua/uk/File:Col_bg.gif" ns="6" title="File:Col bg.gif" />
      <img name="Cніданок._Моя_родина.jpg" timestamp="2008-04-03T11:24:45Z" url="https://vuam.org.ua/images/a/a7/C%D0%BD%D1%96%D0%B4%D0%B0%D0%BD%D0%BE%D0%BA._%D0%9C%D0%BE%D1%8F_%D1%80%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0.jpg" descriptionurl="https://vuam.org.ua/uk/File:C%D0%BD%D1%96%D0%B4%D0%B0%D0%BD%D0%BE%D0%BA._%D0%9C%D0%BE%D1%8F_%D1%80%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0.jpg" ns="6" title="File:Cніданок. Моя родина.jpg" />
      <img name="DSCF7569.JPG" timestamp="2012-10-23T11:12:44Z" url="https://vuam.org.ua/images/1/1c/DSCF7569.JPG" descriptionurl="https://vuam.org.ua/uk/File:DSCF7569.JPG" ns="6" title="File:DSCF7569.JPG" />
    </allimages>
  </query>
</api>