https://en.m.wikipedia.org/w/api.php?action=query&format=json&prop=imageinfo&titles=File%3APresident_Barack_Obama%2Ejpg&formatversion=2&iiprop=url%7Cextmetadata&iiurlwidth=640&iiurlheight=1024

{
  "batchcomplete": true,
  "query": {
    "normalized": [
      {
        "fromencoded": false,
        "from": "File:President_Barack_Obama.jpg",
        "to": "File:President Barack Obama.jpg"
      }
    ],
    "pages": [
      {
        "ns": 6,
        "title": "File:President Barack Obama.jpg",
        "missing": true,
        "known": true,
        "imagerepository": "shared",
        "imageinfo": [
          {
            "thumburl": "https://upload.wikimedia.org/wikipedia/commons/thumb/8/8d/President_Barack_Obama.jpg/640px-President_Barack_Obama.jpg",
            "thumbwidth": 640,
            "thumbheight": 799,
            "url": "https://upload.wikimedia.org/wikipedia/commons/8/8d/President_Barack_Obama.jpg",
            "descriptionurl": "https://commons.wikimedia.org/wiki/File:President_Barack_Obama.jpg",
            "descriptionshorturl": "https://commons.wikimedia.org/w/index.php?curid=23956389",
            "extmetadata": {
              "DateTime": {
                "value": "2013-01-18 13:17:38",
                "source": "mediawiki-metadata",
                "hidden": ""
              },
              "ObjectName": {
                "value": "President Barack Obama",
                "source": "mediawiki-metadata",
                "hidden": ""
              },
              "CommonsMetadataExtension": {
                "value": 1.2,
                "source": "extension",
                "hidden": ""
              },
              "Categories": {
                "value": "6 December|Barack Obama in December 2012|Barack Obama in the Oval Office|Crossed arms (left over right)|December 2012 United States photographs|December 2012 in Washington, D.C.|Executive Office of the President files|Featured pictures on Wikipedia, Arabic|Featured pictures on Wikipedia, Persian|Images with extracted images|Men wearing blue neckties|Official portraits of Barack Obama|Photographs by Pete Souza|Photographs from the White House during the Obama administration|Photographs of politicians with the national flag of the United States in background|Portrait photographs of men smiling|Resolute desk|Standing men|Taken with Canon EOS 5D Mark III|White House in 2012",
                "source": "commons-categories",
                "hidden": ""
              },
              "Assessments": {
                "value": "",
                "source": "commons-categories",
                "hidden": ""
              },
              "ImageDescription": {
                "value": "<a href=\"//commons.wikimedia.org/wiki/President_of_the_United_States\" title=\"President of the United States\">U.S. President</a> <a href=\"//commons.wikimedia.org/wiki/Barack_Obama\" title=\"Barack Obama\">Barack Obama</a>'s official photograph in the <a href=\"https://en.wikipedia.org/wiki/Oval_Office\" class=\"extiw\" title=\"w:Oval Office\">Oval Office</a> on 6 December 2012.",
                "source": "commons-desc-page"
              },
              "DateTimeOriginal": {
                "value": "2012-12-06 15:46:01",
                "source": "commons-desc-page"
              },
              "Credit": {
                "value": "<a rel=\"nofollow\" class=\"external text\" href=\"https://www.flickr.com/photos/whitehouse/8390033709/\">P120612PS-0463</a> (<a rel=\"nofollow\" class=\"external text\" href=\"http://farm9.staticflickr.com/8369/8390033709_fd364647a4_o.jpg\">direct link</a>)",
                "source": "commons-desc-page",
                "hidden": ""
              },
              "Artist": {
                "value": "Official White House Photo by <a href=\"https://en.wikipedia.org/wiki/Pete_Souza\" class=\"extiw\" title=\"w:Pete Souza\">Pete Souza</a>",
                "source": "commons-desc-page"
              },
              "LicenseShortName": {
                "value": "Public domain",
                "source": "commons-desc-page",
                "hidden": ""
              },
              "UsageTerms": {
                "value": "Public domain",
                "source": "commons-desc-page",
                "hidden": ""
              },
              "AttributionRequired": {
                "value": "false",
                "source": "commons-desc-page",
                "hidden": ""
              },
              "Copyrighted": {
                "value": "False",
                "source": "commons-desc-page",
                "hidden": ""
              },
              "Restrictions": {
                "value": "",
                "source": "commons-desc-page",
                "hidden": ""
              },
              "License": {
                "value": "pd",
                "source": "commons-templates",
                "hidden": ""
              }
            }
          }
        ]
      }
    ]
  }
}