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="20180704082928|Modbus_csv_template02.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Modbus_csv_template12.png" timestamp="2018-08-30T05:33:18Z" user="IRidium" url="https://lite.iridi.com/images/7/7b/Modbus_csv_template12.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template12.png" ns="6" title="Файл:Modbus csv template12.png" />
      <img name="Modbus_csv_template11.png" timestamp="2018-08-30T05:33:02Z" user="IRidium" url="https://lite.iridi.com/images/f/fe/Modbus_csv_template11.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template11.png" ns="6" title="Файл:Modbus csv template11.png" />
      <img name="Modbus_csv_template10.png" timestamp="2018-07-04T09:21:21Z" user="IRidium" url="https://lite.iridi.com/images/a/a5/Modbus_csv_template10.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template10.png" ns="6" title="Файл:Modbus csv template10.png" />
      <img name="Modbus_csv_template09.png" timestamp="2018-07-04T09:21:05Z" user="IRidium" url="https://lite.iridi.com/images/f/fe/Modbus_csv_template09.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template09.png" ns="6" title="Файл:Modbus csv template09.png" />
      <img name="Modbus_csv_template08.png" timestamp="2018-07-04T09:20:50Z" user="IRidium" url="https://lite.iridi.com/images/2/20/Modbus_csv_template08.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template08.png" ns="6" title="Файл:Modbus csv template08.png" />
      <img name="Modbus_csv_template07.png" timestamp="2018-07-04T09:20:35Z" user="IRidium" url="https://lite.iridi.com/images/5/57/Modbus_csv_template07.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template07.png" ns="6" title="Файл:Modbus csv template07.png" />
      <img name="Modbus_csv_template06.png" timestamp="2018-07-04T09:20:13Z" user="IRidium" url="https://lite.iridi.com/images/b/b6/Modbus_csv_template06.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template06.png" ns="6" title="Файл:Modbus csv template06.png" />
      <img name="Modbus_csv_template05.png" timestamp="2018-07-04T09:19:56Z" user="IRidium" url="https://lite.iridi.com/images/9/90/Modbus_csv_template05.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template05.png" ns="6" title="Файл:Modbus csv template05.png" />
      <img name="Modbus_csv_template04.png" timestamp="2018-07-04T08:30:16Z" user="IRidium" url="https://lite.iridi.com/images/c/c0/Modbus_csv_template04.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template04.png" ns="6" title="Файл:Modbus csv template04.png" />
      <img name="Modbus_csv_template03.png" timestamp="2018-07-04T08:30:03Z" user="IRidium" url="https://lite.iridi.com/images/9/95/Modbus_csv_template03.png" descriptionurl="https://lite.iridi.com/%D0%A4%D0%B0%D0%B9%D0%BB:Modbus_csv_template03.png" ns="6" title="Файл:Modbus csv template03.png" />
    </allimages>
  </query>
</api>