diff --git a/api/Element.json b/api/Element.json
index f7f4ff97ddcf3a..6ea0c058e2811a 100644
--- a/api/Element.json
+++ b/api/Element.json
@@ -5417,244 +5417,6 @@
           }
         }
       },
-      "onfullscreenchange": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/onfullscreenchange",
-          "spec_url": "https://fullscreen.spec.whatwg.org/#handler-document-onfullscreenchange",
-          "support": {
-            "chrome": [
-              {
-                "version_added": "71"
-              },
-              {
-                "version_added": "15",
-                "alternative_name": "onwebkitfullscreenchange"
-              }
-            ],
-            "chrome_android": [
-              {
-                "version_added": "71"
-              },
-              {
-                "version_added": "18",
-                "alternative_name": "onwebkitfullscreenchange"
-              }
-            ],
-            "edge": [
-              {
-                "version_added": "79"
-              },
-              {
-                "version_added": "12",
-                "alternative_name": "onwebkitfullscreenchange"
-              },
-              {
-                "version_added": "12",
-                "version_removed": "14"
-              }
-            ],
-            "firefox": [
-              {
-                "version_added": "64"
-              },
-              {
-                "version_added": "10",
-                "alternative_name": "onmozfullscreenchange"
-              }
-            ],
-            "firefox_android": [
-              {
-                "version_added": "64"
-              },
-              {
-                "version_added": "10",
-                "alternative_name": "onmozfullscreenchange"
-              }
-            ],
-            "ie": {
-              "version_added": false
-            },
-            "opera": [
-              {
-                "version_added": "58"
-              },
-              {
-                "version_added": "15",
-                "alternative_name": "onwebkitfullscreenchange"
-              },
-              {
-                "version_added": "12.1",
-                "version_removed": "15"
-              }
-            ],
-            "opera_android": [
-              {
-                "version_added": "50"
-              },
-              {
-                "version_added": "14",
-                "alternative_name": "onwebkitfullscreenchange"
-              },
-              {
-                "version_added": "12.1",
-                "version_removed": "14"
-              }
-            ],
-            "safari": {
-              "version_added": "5.1",
-              "alternative_name": "onwebkitfullscreenchange"
-            },
-            "safari_ios": {
-              "version_added": "12",
-              "alternative_name": "onwebkitfullscreenchange",
-              "partial_implementation": true,
-              "notes": "Only available on iPad, not on iPhone."
-            },
-            "samsunginternet_android": [
-              {
-                "version_added": "10.0"
-              },
-              {
-                "version_added": "1.0",
-                "alternative_name": "onwebkitfullscreenchange"
-              }
-            ],
-            "webview_android": [
-              {
-                "version_added": "71"
-              },
-              {
-                "version_added": "≤37",
-                "alternative_name": "onwebkitfullscreenchange"
-              }
-            ]
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "onfullscreenerror": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/onfullscreenerror",
-          "spec_url": "https://fullscreen.spec.whatwg.org/#handler-document-onfullscreenerror",
-          "support": {
-            "chrome": [
-              {
-                "version_added": "71"
-              },
-              {
-                "version_added": "18",
-                "alternative_name": "onwebkitfullscreenerror"
-              }
-            ],
-            "chrome_android": [
-              {
-                "version_added": "71"
-              },
-              {
-                "version_added": "18",
-                "alternative_name": "onwebkitfullscreenerror"
-              }
-            ],
-            "edge": [
-              {
-                "version_added": "79"
-              },
-              {
-                "version_added": "12",
-                "alternative_name": "onwebkitfullscreenerror"
-              },
-              {
-                "version_added": "12",
-                "version_removed": "14"
-              }
-            ],
-            "firefox": [
-              {
-                "version_added": "64"
-              },
-              {
-                "version_added": "10",
-                "alternative_name": "onmozfullscreenerror"
-              }
-            ],
-            "firefox_android": [
-              {
-                "version_added": "64"
-              },
-              {
-                "version_added": "10",
-                "alternative_name": "onmozfullscreenerror"
-              }
-            ],
-            "ie": {
-              "version_added": false
-            },
-            "opera": [
-              {
-                "version_added": "58"
-              },
-              {
-                "version_added": "15",
-                "alternative_name": "onwebkitfullscreenerror"
-              },
-              {
-                "version_added": "12.1",
-                "version_removed": "15"
-              }
-            ],
-            "opera_android": [
-              {
-                "version_added": "50"
-              },
-              {
-                "version_added": "14",
-                "alternative_name": "onwebkitfullscreenerror"
-              },
-              {
-                "version_added": "12.1",
-                "version_removed": "14"
-              }
-            ],
-            "safari": {
-              "version_added": "6",
-              "alternative_name": "onwebkitfullscreenerror"
-            },
-            "safari_ios": {
-              "version_added": "12",
-              "alternative_name": "onwebkitfullscreenerror",
-              "partial_implementation": true,
-              "notes": "Only available on iPad, not on iPhone."
-            },
-            "samsunginternet_android": [
-              {
-                "version_added": "10.0"
-              },
-              {
-                "version_added": "1.0",
-                "alternative_name": "onwebkitfullscreenerror"
-              }
-            ],
-            "webview_android": [
-              {
-                "version_added": "71"
-              },
-              {
-                "version_added": "≤37",
-                "alternative_name": "onwebkitfullscreenerror"
-              }
-            ]
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "openOrClosedShadowRoot": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/openOrClosedShadowRoot",