diff --git a/src/quick/items/qquickwindow.cpp b/src/quick/items/qquickwindow.cpp
index f035e87d995055dff242b01ff66c50352a850082..bc8558e1d8580048bc7b221f28dbae02dd991128 100644
--- a/src/quick/items/qquickwindow.cpp
+++ b/src/quick/items/qquickwindow.cpp
@@ -3044,6 +3044,16 @@ QQmlIncubationController *QQuickWindow::incubationController() const
     do so can result in the scene not rendering properly.
  */
 
+/*!
+    \fn void QQuickWindow::afterAnimating()
+
+    This signal is emitted on the gui thread before requesting the render thread to
+    perform the synchronization of the scene graph.
+
+    Unlike the other similar signals, this one is emitted on the gui thread instead
+    of the render thread. It can be used to synchronize external animation systems
+    with the QML content.
+ */
 
 
 /*!
diff --git a/src/quick/items/qquickwindow.h b/src/quick/items/qquickwindow.h
index 233340d6facb492b4a4378bb09fb360d99bd7ac5..ced232467b2079db248cdcece077c37eab4d4ca8 100644
--- a/src/quick/items/qquickwindow.h
+++ b/src/quick/items/qquickwindow.h
@@ -138,6 +138,7 @@ Q_SIGNALS:
     void beforeSynchronizing();
     void beforeRendering();
     void afterRendering();
+    void afterAnimating();
     Q_REVISION(1) void closing(QQuickCloseEvent *close);
     void colorChanged(const QColor &);
     Q_REVISION(1) void activeFocusItemChanged();
diff --git a/src/quick/scenegraph/qsgrenderloop.cpp b/src/quick/scenegraph/qsgrenderloop.cpp
index 4e8fa67869f896813b47f3edc2df527a13bcc65c..50c5b141c394a4568b3c6aa68ef1d71b5b1badb9 100644
--- a/src/quick/scenegraph/qsgrenderloop.cpp
+++ b/src/quick/scenegraph/qsgrenderloop.cpp
@@ -302,6 +302,8 @@ void QSGGuiThreadRenderLoop::renderWindow(QQuickWindow *window)
     QQuickWindowPrivate *cd = QQuickWindowPrivate::get(window);
     cd->polishItems();
 
+    emit window->afterAnimating();
+
     qint64 renderTime = 0, syncTime = 0;
     QElapsedTimer renderTimer;
     bool profileFrames = qsg_render_timing()  || QQuickProfiler::enabled;
diff --git a/src/quick/scenegraph/qsgthreadedrenderloop.cpp b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
index ffc6d31aa70a5d34829cd166dcf1197fefe03d3d..ddf724b89f6927b4353dd14ebe771b7d893768a0 100644
--- a/src/quick/scenegraph/qsgthreadedrenderloop.cpp
+++ b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
@@ -1096,6 +1096,8 @@ void QSGThreadedRenderLoop::polishAndSync(Window *w)
 
     w->updateDuringSync = false;
 
+    emit w->window->afterAnimating();
+
     QSG_GUI_DEBUG(w->window, " - lock for sync...");
     w->thread->mutex.lock();
     m_locked = true;
diff --git a/src/quick/scenegraph/qsgwindowsrenderloop.cpp b/src/quick/scenegraph/qsgwindowsrenderloop.cpp
index 995d80bb826231e01521c777c4c34c41913cdfe8..204a303d2c8cde2864cbf4a5eae29e5968734c6b 100644
--- a/src/quick/scenegraph/qsgwindowsrenderloop.cpp
+++ b/src/quick/scenegraph/qsgwindowsrenderloop.cpp
@@ -442,6 +442,8 @@ void QSGWindowsRenderLoop::renderWindow(QQuickWindow *window)
     d->polishItems();
     QSG_RENDER_TIMING_SAMPLE(time_polished);
 
+    emit window->afterAnimating();
+
     RLDEBUG(" - syncing");
     d->syncSceneGraph();
     QSG_RENDER_TIMING_SAMPLE(time_synced);
diff --git a/tests/auto/quick/qquickwindow/tst_qquickwindow.cpp b/tests/auto/quick/qquickwindow/tst_qquickwindow.cpp
index bdd70f6a6eb741f10c4ca8969c7313329ccf370c..edde8d2134f74a232cc4b14d6de4b3cc692833ba 100644
--- a/tests/auto/quick/qquickwindow/tst_qquickwindow.cpp
+++ b/tests/auto/quick/qquickwindow/tst_qquickwindow.cpp
@@ -351,6 +351,8 @@ private slots:
     void cursor();
 #endif
 
+    void animatingSignal();
+
 private:
     QTouchDevice *touchDevice;
     QTouchDevice *touchDeviceWithVelocity;
@@ -1657,6 +1659,19 @@ void tst_qquickwindow::qobjectEventFilter_mouse()
     QTest::mouseRelease(&window, Qt::LeftButton, Qt::NoModifier, point);
 }
 
+void tst_qquickwindow::animatingSignal()
+{
+    QQuickWindow window;
+    window.setGeometry(100, 100, 300, 200);
+
+    QSignalSpy spy(&window, SIGNAL(afterAnimating()));
+
+    window.show();
+    QTRY_VERIFY(window.isExposed());
+
+    QTRY_VERIFY(spy.count() > 1);
+}
+
 QTEST_MAIN(tst_qquickwindow)
 
 #include "tst_qquickwindow.moc"