diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 68476982a..cef8ecfe7 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -1697,6 +1697,12 @@ interface ShadowRootInit {
     mode: ShadowRootMode;
 }
 
+interface ShareData {
+    text?: string;
+    title?: string;
+    url?: string;
+}
+
 interface SpeechSynthesisErrorEventInit extends SpeechSynthesisEventInit {
     error: SpeechSynthesisErrorCode;
 }
@@ -10727,6 +10733,7 @@ interface Navigator extends MSFileSaver, MSNavigatorDoNotTrack, NavigatorAutomat
     msLaunchUri(uri: string, successCallback?: MSLaunchUriCallback, noHandlerCallback?: MSLaunchUriCallback): void;
     requestMediaKeySystemAccess(keySystem: string, supportedConfigurations: MediaKeySystemConfiguration[]): Promise<MediaKeySystemAccess>;
     sendBeacon(url: string, data?: BodyInit | null): boolean;
+    share(data?: ShareData): Promise<void>;
     vibrate(pattern: number | number[]): boolean;
 }
 
diff --git a/inputfiles/idl/Web Share.widl b/inputfiles/idl/Web Share.widl
new file mode 100644
index 000000000..a635a1014
--- /dev/null
+++ b/inputfiles/idl/Web Share.widl	
@@ -0,0 +1,9 @@
+partial interface Navigator {
+  [SecureContext] Promise<void> share(optional ShareData data = {});
+};
+
+dictionary ShareData {
+  USVString title;
+  USVString text;
+  USVString url;
+};
diff --git a/inputfiles/idlSources.json b/inputfiles/idlSources.json
index 2dd0b18d7..da35b2b38 100644
--- a/inputfiles/idlSources.json
+++ b/inputfiles/idlSources.json
@@ -635,6 +635,10 @@
         "url": "https://w3c.github.io/webrtc-pc/",
         "title": "WebRTC"
     },
+    {
+        "url": "https://www.w3.org/TR/web-share/",
+        "title": "Web Share"
+    },
     {
         "url": "https://w3c.github.io/speech-api/",
         "title": "Web Speech API"