diff --git a/kwinbindings.cpp b/kwinbindings.cpp
index d034390cf..f75b2bac7 100644
--- a/kwinbindings.cpp
+++ b/kwinbindings.cpp
@@ -137,6 +137,10 @@ DEF2("Switch Window Right", I18N_NOOP("Switch to Window to the Right"),
      Qt::META + Qt::ALT + Qt::Key_Right, slotSwitchWindowRight());
 DEF2("Switch Window Left", I18N_NOOP("Switch to Window to the Left"),
      Qt::META + Qt::ALT + Qt::Key_Left, slotSwitchWindowLeft());
+DEF2("Increase Opacity", I18N_NOOP("Increase Opacity of Active Window by 5 %"),
+    0, slotIncreaseWindowOpacity());
+DEF2("Decrease Opacity", I18N_NOOP("Decrease Opacity of Active Window by 5 %"),
+    0, slotLowerWindowOpacity());
 
 a = actionCollection->addAction("Group:Window Desktop");
 a->setText(i18n("Window & Desktop"));
diff --git a/useractions.cpp b/useractions.cpp
index cb5e237ad..5cc23e586 100644
--- a/useractions.cpp
+++ b/useractions.cpp
@@ -254,6 +254,22 @@ void Workspace::setPopupClientOpacity(QAction* action)
     active_popup_client->setOpacity(level / 100.0);
 }
 
+void Workspace::slotIncreaseWindowOpacity()
+{
+    if (!active_client) {
+        return;
+    }
+    active_client->setOpacity(qMin(active_client->opacity() + 0.05, 1.0));
+}
+
+void Workspace::slotLowerWindowOpacity()
+{
+    if (!active_client) {
+        return;
+    }
+    active_client->setOpacity(qMax(active_client->opacity() - 0.05, 0.05));
+}
+
 /*!
   The client popup menu will become visible soon.
 
diff --git a/workspace.h b/workspace.h
index 68d78d57c..72635d06c 100644
--- a/workspace.h
+++ b/workspace.h
@@ -582,6 +582,9 @@ public slots:
     void slotSwitchWindowRight();
     void slotSwitchWindowLeft();
 
+    void slotIncreaseWindowOpacity();
+    void slotLowerWindowOpacity();
+
     void slotWindowOperations();
     void slotWindowClose();
     void slotWindowMove();