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="1906_Death_Certif_Mary_McCandless_Mackey.jpg" timestamp="2024-05-08T13:40:31Z" user="Liz" url="http://mouser.org/projects/genealogy/images/e/e9/1906_Death_Certif_Mary_McCandless_Mackey.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:1906_Death_Certif_Mary_McCandless_Mackey.jpg" ns="6" title="File:1906 Death Certif Mary McCandless Mackey.jpg" />
      <img name="Index_complete.png" timestamp="2023-03-17T03:36:56Z" user="Mouser" url="http://mouser.org/projects/genealogy/images/9/94/Index_complete.png" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Index_complete.png" ns="6" title="File:Index complete.png" />
      <img name="US_Federal_Census_1910_PA,_Venango,_Richland,_Enum._Dist_141.jpg" timestamp="2023-03-16T22:26:24Z" user="Liz" url="http://mouser.org/projects/genealogy/images/0/0e/US_Federal_Census_1910_PA%2C_Venango%2C_Richland%2C_Enum._Dist_141.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:US_Federal_Census_1910_PA,_Venango,_Richland,_Enum._Dist_141.jpg" ns="6" title="File:US Federal Census 1910 PA, Venango, Richland, Enum. Dist 141.jpg" />
      <img name="Gravestone_Casper_Hockenberry_1785-1860.jpg" timestamp="2022-12-17T21:26:38Z" user="Liz" url="http://mouser.org/projects/genealogy/images/6/61/Gravestone_Casper_Hockenberry_1785-1860.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Gravestone_Casper_Hockenberry_1785-1860.jpg" ns="6" title="File:Gravestone Casper Hockenberry 1785-1860.jpg" />
      <img name="Death_Certif_Catherine_Kline_Strotman_1930.jpg" timestamp="2022-11-29T01:17:56Z" user="Liz" url="http://mouser.org/projects/genealogy/images/5/50/Death_Certif_Catherine_Kline_Strotman_1930.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Death_Certif_Catherine_Kline_Strotman_1930.jpg" ns="6" title="File:Death Certif Catherine Kline Strotman 1930.jpg" />
      <img name="1912_Birth_Certif_Loy_Beals.jpg" timestamp="2022-11-26T19:30:46Z" user="Liz" url="http://mouser.org/projects/genealogy/images/1/1c/1912_Birth_Certif_Loy_Beals.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:1912_Birth_Certif_Loy_Beals.jpg" ns="6" title="File:1912 Birth Certif Loy Beals.jpg" />
      <img name="1940_US_Fed_Census_PA,_Venango,_Richland,_E.D.61-54B_p,_11_Anc.jpg" timestamp="2022-11-25T18:49:22Z" user="Liz" url="http://mouser.org/projects/genealogy/images/3/3c/1940_US_Fed_Census_PA%2C_Venango%2C_Richland%2C_E.D.61-54B_p%2C_11_Anc.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:1940_US_Fed_Census_PA,_Venango,_Richland,_E.D.61-54B_p,_11_Anc.jpg" ns="6" title="File:1940 US Fed Census PA, Venango, Richland, E.D.61-54B p, 11 Anc.jpg" />
      <img name="Isaac_L_Wimer.jpg" timestamp="2022-11-23T18:03:19Z" user="Liz" url="http://mouser.org/projects/genealogy/images/1/1a/Isaac_L_Wimer.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:Isaac_L_Wimer.jpg" ns="6" title="File:Isaac L Wimer.jpg" />
      <img name="1930_US_Fed_Census_PA,_Venango,_Richland,_E.D._61-40,_p_3_Anc.jpg" timestamp="2022-03-29T12:18:27Z" user="Liz" url="http://mouser.org/projects/genealogy/images/3/34/1930_US_Fed_Census_PA%2C_Venango%2C_Richland%2C_E.D._61-40%2C_p_3_Anc.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:1930_US_Fed_Census_PA,_Venango,_Richland,_E.D._61-40,_p_3_Anc.jpg" ns="6" title="File:1930 US Fed Census PA, Venango, Richland, E.D. 61-40, p 3 Anc.jpg" />
      <img name="1908_Marriage_License_Appl_Anna_Kline,_James_A_Sheffer.jpg" timestamp="2022-03-23T12:21:04Z" user="Liz" url="http://mouser.org/projects/genealogy/images/0/02/1908_Marriage_License_Appl_Anna_Kline%2C_James_A_Sheffer.jpg" descriptionurl="http://mouser.org/projects/genealogy/index.php/File:1908_Marriage_License_Appl_Anna_Kline,_James_A_Sheffer.jpg" ns="6" title="File:1908 Marriage License Appl Anna Kline, James A Sheffer.jpg" />
    </allimages>
  </query>
  <query-continue>
    <allimages aistart="2022-01-07T17:08:46Z" />
  </query-continue>
</api>