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="B-_FIRST_GM_Sheffershop_&amp;_TEAM.jpg" timestamp="2011-04-23T16:31:04Z" url="http://mouser.org/projects/genealogy/images/9/96/B-_FIRST_GM_Sheffershop_%26_TEAM.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:B-_FIRST_GM_Sheffershop_%26_TEAM.jpg" ns="6" title="File:B- FIRST GM Sheffershop &amp; TEAM.jpg" />
      <img name="B17_&amp;_Crew.jpg" timestamp="2008-12-03T18:16:13Z" url="http://mouser.org/projects/genealogy/images/9/9c/B17_%26_Crew.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:B17_%26_Crew.jpg" ns="6" title="File:B17 &amp; Crew.jpg" />
      <img name="BLM-land-grant-samuel-church.jpg" timestamp="2012-03-21T02:51:31Z" url="http://mouser.org/projects/genealogy/images/5/58/BLM-land-grant-samuel-church.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:BLM-land-grant-samuel-church.jpg" ns="6" title="File:BLM-land-grant-samuel-church.jpg" />
      <img name="BLM_land_patent_rebecca_b_church1.jpg" timestamp="2012-04-07T18:34:19Z" url="http://mouser.org/projects/genealogy/images/c/c9/BLM_land_patent_rebecca_b_church1.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:BLM_land_patent_rebecca_b_church1.jpg" ns="6" title="File:BLM land patent rebecca b church1.jpg" />
      <img name="BLM_land_patent_rebecca_b_church2.jpg" timestamp="2012-04-07T18:48:08Z" url="http://mouser.org/projects/genealogy/images/7/78/BLM_land_patent_rebecca_b_church2.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:BLM_land_patent_rebecca_b_church2.jpg" ns="6" title="File:BLM land patent rebecca b church2.jpg" />
      <img name="Baby_Joel_Meloy_Death_Certificate.jpg" timestamp="2012-08-17T15:24:56Z" url="http://mouser.org/projects/genealogy/images/7/74/Baby_Joel_Meloy_Death_Certificate.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Baby_Joel_Meloy_Death_Certificate.jpg" ns="6" title="File:Baby Joel Meloy Death Certificate.jpg" />
      <img name="Baptism_Henry_Kline.jpg" timestamp="2015-09-07T17:46:17Z" url="http://mouser.org/projects/genealogy/images/a/a8/Baptism_Henry_Kline.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Baptism_Henry_Kline.jpg" ns="6" title="File:Baptism Henry Kline.jpg" />
      <img name="Baptism_William_Biehl_1839_at_Emmaus_PA.jpg" timestamp="2012-08-26T20:14:51Z" url="http://mouser.org/projects/genealogy/images/6/6f/Baptism_William_Biehl_1839_at_Emmaus_PA.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Baptism_William_Biehl_1839_at_Emmaus_PA.jpg" ns="6" title="File:Baptism William Biehl 1839 at Emmaus PA.jpg" />
      <img name="Barbara_Hartman_1807,_PA_a_NJ_Church_a_Town_Records_Easton,_Northhampton_PA.jpg" timestamp="2021-02-28T00:26:00Z" url="http://mouser.org/projects/genealogy/images/b/b8/Barbara_Hartman_1807%2C_PA_a_NJ_Church_a_Town_Records_Easton%2C_Northhampton_PA.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Barbara_Hartman_1807,_PA_a_NJ_Church_a_Town_Records_Easton,_Northhampton_PA.jpg" ns="6" title="File:Barbara Hartman 1807, PA a NJ Church a Town Records Easton, Northhampton PA.jpg" />
      <img name="Barbara_wife_of_Abraham_Howe,_died_4_Aug,_1866_a.jpg" timestamp="2021-03-02T19:50:02Z" url="http://mouser.org/projects/genealogy/images/3/33/Barbara_wife_of_Abraham_Howe%2C_died_4_Aug%2C_1866_a.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Barbara_wife_of_Abraham_Howe,_died_4_Aug,_1866_a.jpg" ns="6" title="File:Barbara wife of Abraham Howe, died 4 Aug, 1866 a.jpg" />
    </allimages>
  </query>
  <query-continue>
    <allimages aicontinue="Barnard_Stoughton.jpg" />
  </query-continue>
</api>