diff --git a/src/web/Manager.mjs b/src/web/Manager.mjs
index 2e87210c1d..ae972a59d6 100755
--- a/src/web/Manager.mjs
+++ b/src/web/Manager.mjs
@@ -125,6 +125,7 @@ class Manager {
         window.addEventListener("focus", this.window.windowFocus.bind(this.window));
         window.addEventListener("statechange", this.app.stateChange.bind(this.app));
         window.addEventListener("popstate", this.app.popState.bind(this.app));
+        window.addEventListener("message", this.input.handlePostMessage.bind(this.input));
 
         // Controls
         document.getElementById("bake").addEventListener("click", this.controls.bakeClick.bind(this.controls));
diff --git a/src/web/waiters/InputWaiter.mjs b/src/web/waiters/InputWaiter.mjs
index 3999fd2f18..9e05932f00 100644
--- a/src/web/waiters/InputWaiter.mjs
+++ b/src/web/waiters/InputWaiter.mjs
@@ -1654,6 +1654,22 @@ class InputWaiter {
         this.changeTab(inputNum, this.app.options.syncTabs);
     }
 
+    /**
+     * Handler for incoming postMessages
+     * If the events data has a `type` property set to `dataSubmit`
+     * the value property is set to the current input
+     * @param {event} e
+     * @param {object} e.data
+     * @param {string} e.data.type - the type of request, currently the only value is "dataSubmit"
+     * @param {string} e.data.value - the value of the message
+     */
+    handlePostMessage(e) {
+        if ("data" in e && "type" in e.data && "value" in e.data) {
+            if (e.data.type === "dataSubmit") {
+                this.setInput(e.data.value);
+            }
+        }
+    }
 }
 
 export default InputWaiter;