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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-_Cotoneaster_salicifolius_(bacche_autunnali).jpg" timestamp="2019-01-03T18:37:36Z" url="http://casadonorione.it/Uploads/c/c2/B-_Cotoneaster_salicifolius_%28bacche_autunnali%29.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:B-_Cotoneaster_salicifolius_(bacche_autunnali).jpg" ns="6" title="File:B- Cotoneaster salicifolius (bacche autunnali).jpg" />
      <img name="BAMBINI_NATALE.pdf" timestamp="2014-12-03T08:50:45Z" url="http://casadonorione.it/Uploads/e/ee/BAMBINI_NATALE.pdf" descriptionurl="http://casadonorione.it/index.php?title=File:BAMBINI_NATALE.pdf" ns="6" title="File:BAMBINI NATALE.pdf" />
      <img name="B_Prunus_cerasifera_Pissardii_(particolare).jpg" timestamp="2019-04-09T06:25:32Z" url="http://casadonorione.it/Uploads/0/01/B_Prunus_cerasifera_Pissardii_%28particolare%29.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:B_Prunus_cerasifera_Pissardii_(particolare).jpg" ns="6" title="File:B Prunus cerasifera Pissardii (particolare).jpg" />
      <img name="Babbo_Natale_con_slitta.JPG" timestamp="2018-05-29T16:32:48Z" url="http://casadonorione.it/Uploads/e/e2/Babbo_Natale_con_slitta.JPG" descriptionurl="http://casadonorione.it/index.php?title=File:Babbo_Natale_con_slitta.JPG" ns="6" title="File:Babbo Natale con slitta.JPG" />
      <img name="Bacche_di_Raphiolepsis_umbellata_ovata.jpg" timestamp="2018-11-28T15:43:52Z" url="http://casadonorione.it/Uploads/8/85/Bacche_di_Raphiolepsis_umbellata_ovata.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:Bacche_di_Raphiolepsis_umbellata_ovata.jpg" ns="6" title="File:Bacche di Raphiolepsis umbellata ovata.jpg" />
      <img name="Ballerini_di_Resana,_11-05-2019.jpg" timestamp="2020-02-11T14:04:03Z" url="http://casadonorione.it/Uploads/2/28/Ballerini_di_Resana%2C_11-05-2019.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:Ballerini_di_Resana,_11-05-2019.jpg" ns="6" title="File:Ballerini di Resana, 11-05-2019.jpg" />
      <img name="Ballerini_di_Resana_(TV)_11-05-2019.jpg" timestamp="2020-02-11T14:04:02Z" url="http://casadonorione.it/Uploads/d/db/Ballerini_di_Resana_%28TV%29_11-05-2019.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:Ballerini_di_Resana_(TV)_11-05-2019.jpg" ns="6" title="File:Ballerini di Resana (TV) 11-05-2019.jpg" />
      <img name="BalloClown2017_1.jpg" timestamp="2017-07-15T09:56:50Z" url="http://casadonorione.it/Uploads/d/d6/BalloClown2017_1.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:BalloClown2017_1.jpg" ns="6" title="File:BalloClown2017 1.jpg" />
      <img name="BalloClown2017_10.jpg" timestamp="2017-07-15T09:56:57Z" url="http://casadonorione.it/Uploads/c/cf/BalloClown2017_10.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:BalloClown2017_10.jpg" ns="6" title="File:BalloClown2017 10.jpg" />
      <img name="BalloClown2017_11.jpg" timestamp="2017-07-15T09:56:58Z" url="http://casadonorione.it/Uploads/4/47/BalloClown2017_11.jpg" descriptionurl="http://casadonorione.it/index.php?title=File:BalloClown2017_11.jpg" ns="6" title="File:BalloClown2017 11.jpg" />
    </allimages>
  </query>
  <query-continue>
    <allimages aicontinue="BalloClown2017_12.jpg" />
  </query-continue>
</api>