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="20110624192412|gd_sto_f2m.mes" />
  </query-continue>
  <query>
    <allimages>
      <img name="01199Stillwater_death.dlg" timestamp="2014-12-23T01:36:14Z" user="Hikami" url="https://blackmasqueradegames.com/arcanum/images/f/f4/01199Stillwater_death.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01199Stillwater_death.dlg" ns="6" title="ファイル:01199Stillwater death.dlg" />
      <img name="01055Niles_and_Edward_Schuyler.dlg" timestamp="2012-10-25T00:01:59Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/b/b1/01055Niles_and_Edward_Schuyler.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01055Niles_and_Edward_Schuyler.dlg" ns="6" title="ファイル:01055Niles and Edward Schuyler.dlg" />
      <img name="01054Pelonious_Schuyler.dlg" timestamp="2012-10-25T00:01:22Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/c/ca/01054Pelonious_Schuyler.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01054Pelonious_Schuyler.dlg" ns="6" title="ファイル:01054Pelonious Schuyler.dlg" />
      <img name="01059Schuylers_Receptionist.dlg" timestamp="2012-09-11T23:19:32Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/b/b8/01059Schuylers_Receptionist.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01059Schuylers_Receptionist.dlg" ns="6" title="ファイル:01059Schuylers Receptionist.dlg" />
      <img name="01800Virgil_follower_death_speech.dlg" timestamp="2012-01-11T14:20:32Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/6/6e/01800Virgil_follower_death_speech.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01800Virgil_follower_death_speech.dlg" ns="6" title="ファイル:01800Virgil follower death speech.dlg" />
      <img name="01041Lukan.dlg" timestamp="2011-10-07T18:10:57Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/c/c1/01041Lukan.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01041Lukan.dlg" ns="6" title="ファイル:01041Lukan.dlg" />
      <img name="01042Lukans_Henchmen.dlg" timestamp="2011-10-07T18:10:43Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/9/9d/01042Lukans_Henchmen.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:01042Lukans_Henchmen.dlg" ns="6" title="ファイル:01042Lukans Henchmen.dlg" />
      <img name="03029gypsy.dlg" timestamp="2011-07-01T00:49:39Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/4/4d/03029gypsy.dlg" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:03029gypsy.dlg" ns="6" title="ファイル:03029gypsy.dlg" />
      <img name="gd_sto_m2m.mes" timestamp="2011-06-24T19:24:32Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/c/c5/gd_sto_m2m.mes" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:gd_sto_m2m.mes" ns="6" title="ファイル:gd sto m2m.mes" />
      <img name="gd_sto_m2f.mes" timestamp="2011-06-24T19:24:21Z" user="Serika" url="https://blackmasqueradegames.com/arcanum/images/7/7d/gd_sto_m2f.mes" descriptionurl="https://blackmasqueradegames.com/arcanum/index.php/%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:gd_sto_m2f.mes" ns="6" title="ファイル:gd sto m2f.mes" />
    </allimages>
  </query>
</api>