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>
    <allimages>
      <img name="MMW_Logo_Stacked.png" timestamp="2016-06-30T15:05:06Z" url="https://docs.mymobileworkers.com/images/a/a8/MMW_Logo_Stacked.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:MMW_Logo_Stacked.png" ns="6" title="File:MMW Logo Stacked.png" />
      <img name="Medium_MMWlogomedium150dpi.png" timestamp="2013-05-13T11:13:13Z" url="https://docs.mymobileworkers.com/images/e/e2/Medium_MMWlogomedium150dpi.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:Medium_MMWlogomedium150dpi.png" ns="6" title="File:Medium MMWlogomedium150dpi.png" />
      <img name="Selection_001.png" timestamp="2014-09-01T08:58:05Z" url="https://docs.mymobileworkers.com/images/7/78/Selection_001.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:Selection_001.png" ns="6" title="File:Selection 001.png" />
      <img name="Selection_002.png" timestamp="2014-09-01T08:58:43Z" url="https://docs.mymobileworkers.com/images/2/21/Selection_002.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:Selection_002.png" ns="6" title="File:Selection 002.png" />
      <img name="Selection_003.png" timestamp="2014-09-01T08:59:56Z" url="https://docs.mymobileworkers.com/images/9/96/Selection_003.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:Selection_003.png" ns="6" title="File:Selection 003.png" />
      <img name="Selection_004.png" timestamp="2014-09-01T09:00:28Z" url="https://docs.mymobileworkers.com/images/9/92/Selection_004.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:Selection_004.png" ns="6" title="File:Selection 004.png" />
      <img name="Selection_005.png" timestamp="2014-09-01T14:32:06Z" url="https://docs.mymobileworkers.com/images/9/9c/Selection_005.png" descriptionurl="https://docs.mymobileworkers.com/index.php?title=File:Selection_005.png" ns="6" title="File:Selection 005.png" />
    </allimages>
  </query>
</api>