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="Deploy1.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Backup.png" timestamp="2017-05-05T08:11:46Z" url="http://archestra.info/images/9/94/Backup.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Backup.png" ns="6" title="Файл:Backup.png" />
      <img name="ButtonBarControl.png" timestamp="2015-06-14T09:23:55Z" url="http://archestra.info/images/e/e8/ButtonBarControl.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:ButtonBarControl.png" ns="6" title="Файл:ButtonBarControl.png" />
      <img name="Concept_1.png" timestamp="2015-05-04T13:33:05Z" url="http://archestra.info/images/d/db/Concept_1.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Concept_1.png" ns="6" title="Файл:Concept 1.png" />
      <img name="Connectivity.png" timestamp="2014-06-11T07:13:57Z" url="http://archestra.info/images/3/3f/Connectivity.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Connectivity.png" ns="6" title="Файл:Connectivity.png" />
      <img name="Convert_to_Modern_type.png" timestamp="2017-05-05T08:01:09Z" url="http://archestra.info/images/4/40/Convert_to_Modern_type.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Convert_to_Modern_type.png" ns="6" title="Файл:Convert to Modern type.png" />
      <img name="Cross_domain.png" timestamp="2015-11-01T21:01:31Z" url="http://archestra.info/images/6/6c/Cross_domain.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Cross_domain.png" ns="6" title="Файл:Cross domain.png" />
      <img name="Cross_domain2.png" timestamp="2015-11-01T21:04:46Z" url="http://archestra.info/images/f/f9/Cross_domain2.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Cross_domain2.png" ns="6" title="Файл:Cross domain2.png" />
      <img name="DR_connectors.png" timestamp="2014-04-30T11:05:45Z" url="http://archestra.info/images/b/b1/DR_connectors.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:DR_connectors.png" ns="6" title="Файл:DR connectors.png" />
      <img name="DR_with_WW.png" timestamp="2014-04-30T09:52:33Z" url="http://archestra.info/images/7/73/DR_with_WW.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:DR_with_WW.png" ns="6" title="Файл:DR with WW.png" />
      <img name="DTC_Access.png" timestamp="2016-02-17T09:52:33Z" url="http://archestra.info/images/1/16/DTC_Access.png" descriptionurl="http://archestra.info/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:DTC_Access.png" ns="6" title="Файл:DTC Access.png" />
    </allimages>
  </query>
</api>