diff --git a/Libraries/LibGUI/GWidget.cpp b/Libraries/LibGUI/GWidget.cpp
index 1a07c4865ba..7c2563d59eb 100644
--- a/Libraries/LibGUI/GWidget.cpp
+++ b/Libraries/LibGUI/GWidget.cpp
@@ -3,6 +3,7 @@
 #include "GEventLoop.h"
 #include "GWindow.h"
 #include <AK/Assertions.h>
+#include <AK/JsonObject.h>
 #include <LibGUI/GAction.h>
 #include <LibGUI/GApplication.h>
 #include <LibGUI/GLayout.h>
@@ -585,3 +586,18 @@ void GWidget::set_forecolor(const StringView& color_string)
         return;
     set_foreground_color(color.value());
 }
+
+void GWidget::save_to(AK::JsonObject& json)
+{
+    json.set("relative_rect", relative_rect().to_string());
+    json.set("fill_with_background_color", fill_with_background_color());
+    json.set("tooltip", tooltip());
+    json.set("visible", is_visible());
+    json.set("focused", is_focused());
+    json.set("enabled", is_enabled());
+    json.set("background_color", background_color().to_string());
+    json.set("foreground_color", foreground_color().to_string());
+    json.set("preferred_size", preferred_size().to_string());
+    json.set("size_policy", String::format("[%s,%s]", to_string(horizontal_size_policy()), to_string(vertical_size_policy())));
+    CObject::save_to(json);
+}
diff --git a/Libraries/LibGUI/GWidget.h b/Libraries/LibGUI/GWidget.h
index 3c4af83d539..f600f86de81 100644
--- a/Libraries/LibGUI/GWidget.h
+++ b/Libraries/LibGUI/GWidget.h
@@ -22,6 +22,17 @@ enum class SizePolicy {
     Fixed,
     Fill
 };
+inline const char* to_string(SizePolicy policy)
+{
+    switch (policy) {
+    case SizePolicy::Fixed:
+        return "SizePolicy::Fixed";
+    case SizePolicy::Fill:
+        return "SizePolicy::Fill";
+    }
+    return "SizePolicy::(Invalid)";
+}
+
 enum class HorizontalDirection {
     Left,
     Right
@@ -206,6 +217,8 @@ public:
     virtual bool is_radio_button() const { return false; }
     virtual bool is_abstract_button() const { return false; }
 
+    virtual void save_to(AK::JsonObject&) override;
+
 private:
     void handle_paint_event(GPaintEvent&);
     void handle_resize_event(GResizeEvent&);
diff --git a/Libraries/LibGUI/GWindow.cpp b/Libraries/LibGUI/GWindow.cpp
index b71b9d4dd47..3ab70d20c9a 100644
--- a/Libraries/LibGUI/GWindow.cpp
+++ b/Libraries/LibGUI/GWindow.cpp
@@ -1,4 +1,5 @@
 #include <AK/HashMap.h>
+#include <AK/JsonObject.h>
 #include <AK/StringBuilder.h>
 #include <LibC/SharedBuffer.h>
 #include <LibC/stdio.h>
@@ -696,3 +697,16 @@ Vector<GWidget*> GWindow::focusable_widgets() const
     collect_focusable_widgets(*m_main_widget);
     return collected_widgets;
 }
+
+void GWindow::save_to(AK::JsonObject& json)
+{
+    json.set("title", title());
+    json.set("visible", is_visible());
+    json.set("active", is_active());
+    json.set("resizable", is_resizable());
+    json.set("fullscreen", is_fullscreen());
+    json.set("rect", rect().to_string());
+    json.set("base_size", base_size().to_string());
+    json.set("size_increment", size_increment().to_string());
+    CObject::save_to(json);
+}
diff --git a/Libraries/LibGUI/GWindow.h b/Libraries/LibGUI/GWindow.h
index b15e2449b53..5937a18f6fe 100644
--- a/Libraries/LibGUI/GWindow.h
+++ b/Libraries/LibGUI/GWindow.h
@@ -125,6 +125,8 @@ public:
 
     Vector<GWidget*> focusable_widgets() const;
 
+    virtual void save_to(AK::JsonObject&) override;
+
 protected:
     virtual void wm_event(GWMEvent&);