diff --git a/api/Window.json b/api/Window.json
index fdfc7ceacd6e45..dcadfffebec455 100644
--- a/api/Window.json
+++ b/api/Window.json
@@ -4123,15 +4123,33 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Window/navigator",
           "spec_url": "https://html.spec.whatwg.org/multipage/system-state.html#dom-navigator",
           "support": {
-            "chrome": {
-              "version_added": "1"
-            },
-            "chrome_android": {
-              "version_added": "18"
-            },
-            "edge": {
-              "version_added": "12"
-            },
+            "chrome": [
+              {
+                "version_added": "1"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "chrome_android": [
+              {
+                "version_added": "18"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "edge": [
+              {
+                "version_added": "12"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
             "firefox": [
               {
                 "version_added": "1"
@@ -4150,27 +4168,69 @@
                 "alternative_name": "clientInformation"
               }
             ],
-            "ie": {
-              "version_added": "4"
-            },
-            "opera": {
-              "version_added": "3"
-            },
-            "opera_android": {
-              "version_added": "10.1"
-            },
-            "safari": {
-              "version_added": "1"
-            },
-            "safari_ios": {
-              "version_added": "1"
-            },
-            "samsunginternet_android": {
-              "version_added": "1.0"
-            },
-            "webview_android": {
-              "version_added": "1"
-            }
+            "ie": [
+              {
+                "version_added": "4"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "opera": [
+              {
+                "version_added": "3"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "opera_android": [
+              {
+                "version_added": "10.1"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "safari": [
+              {
+                "version_added": "1"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "safari_ios": [
+              {
+                "version_added": "1"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "samsunginternet_android": [
+              {
+                "version_added": "1.0"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ],
+            "webview_android": [
+              {
+                "version_added": "1"
+              },
+              {
+                "version_added": true,
+                "alternative_name": "clientInformation"
+              }
+            ]
           },
           "status": {
             "experimental": false,