diff --git a/Ladybird/WebContent/main.cpp b/Ladybird/WebContent/main.cpp
index 6968890c3b..7c88639ecf 100644
--- a/Ladybird/WebContent/main.cpp
+++ b/Ladybird/WebContent/main.cpp
@@ -23,6 +23,7 @@
 #include <LibJS/Bytecode/Interpreter.h>
 #include <LibMain/Main.h>
 #include <LibWeb/Bindings/MainThreadVM.h>
+#include <LibWeb/HTML/Window.h>
 #include <LibWeb/Loader/ContentFilter.h>
 #include <LibWeb/Loader/FrameLoader.h>
 #include <LibWeb/Loader/ResourceLoader.h>
@@ -89,6 +90,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         Web::WebSockets::WebSocketClientManager::initialize(Ladybird::WebSocketClientManagerQt::create());
     }
 
+    Web::HTML::Window::set_internals_object_exposed(is_layout_test_mode);
+
     JS::Bytecode::Interpreter::set_enabled(use_javascript_bytecode);
 
     VERIFY(webcontent_fd_passing_socket >= 0);
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index aa34dd939e..830f86d3d3 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -3126,6 +3126,7 @@ using namespace Web::FileAPI;
 using namespace Web::Geometry;
 using namespace Web::HighResolutionTime;
 using namespace Web::HTML;
+using namespace Web::Internals;
 using namespace Web::IntersectionObserver;
 using namespace Web::RequestIdleCallback;
 using namespace Web::ResizeObserver;
@@ -3342,6 +3343,7 @@ using namespace Web::FileAPI;
 using namespace Web::Geometry;
 using namespace Web::HighResolutionTime;
 using namespace Web::HTML;
+using namespace Web::Internals;
 using namespace Web::IntersectionObserver;
 using namespace Web::PerformanceTimeline;
 using namespace Web::RequestIdleCallback;
@@ -3723,6 +3725,7 @@ using namespace Web::FileAPI;
 using namespace Web::Geometry;
 using namespace Web::HighResolutionTime;
 using namespace Web::HTML;
+using namespace Web::Internals;
 using namespace Web::IntersectionObserver;
 using namespace Web::NavigationTiming;
 using namespace Web::PerformanceTimeline;
@@ -3858,6 +3861,7 @@ using namespace Web::FileAPI;
 using namespace Web::Geometry;
 using namespace Web::HighResolutionTime;
 using namespace Web::HTML;
+using namespace Web::Internals;
 using namespace Web::IntersectionObserver;
 using namespace Web::NavigationTiming;
 using namespace Web::PerformanceTimeline;
@@ -3990,6 +3994,7 @@ using namespace Web::FileAPI;
 using namespace Web::Geometry;
 using namespace Web::HighResolutionTime;
 using namespace Web::HTML;
+using namespace Web::Internals;
 using namespace Web::IntersectionObserver;
 using namespace Web::NavigationTiming;
 using namespace Web::PerformanceTimeline;
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/Namespaces.h b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/Namespaces.h
index 6fd5580dfd..8c95cba9e8 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/Namespaces.h
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/Namespaces.h
@@ -23,6 +23,7 @@ static constexpr Array libweb_interface_namespaces = {
     "Geometry"sv,
     "HTML"sv,
     "HighResolutionTime"sv,
+    "Internals"sv,
     "IntersectionObserver"sv,
     "NavigationTiming"sv,
     "RequestIdleCallback"sv,
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp
index 79e8f1e637..ddd3dd1570 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp
@@ -178,7 +178,7 @@ void Intrinsics::create_web_namespace<@namespace_class@>(JS::Realm& realm)
 )~~~");
     };
 
-    auto add_interface = [&](SourceGenerator& gen, StringView name, StringView prototype_class, StringView constructor_class, Optional<LegacyConstructor> const& legacy_constructor) {
+    auto add_interface = [](SourceGenerator& gen, StringView name, StringView prototype_class, StringView constructor_class, Optional<LegacyConstructor> const& legacy_constructor) {
         gen.set("interface_name", name);
         gen.set("prototype_class", prototype_class);
         gen.set("constructor_class", constructor_class);
@@ -434,6 +434,8 @@ static ErrorOr<ExposedTo> parse_exposure_set(IDL::Interface& interface)
     auto exposed = maybe_exposed.value().trim_whitespace();
     if (exposed == "*"sv)
         return ExposedTo::All;
+    if (exposed == "Nobody"sv)
+        return ExposedTo::Nobody;
     if (exposed == "Window"sv)
         return ExposedTo::Window;
     if (exposed == "Worker"sv)
@@ -477,10 +479,8 @@ ErrorOr<void> add_to_interface_sets(IDL::Interface& interface, Vector<IDL::Inter
 {
     // TODO: Add service worker exposed and audio worklet exposed
     auto whom = TRY(parse_exposure_set(interface));
-    VERIFY(whom != ExposedTo::Nobody);
 
-    if ((whom & ExposedTo::Window) || (whom & ExposedTo::DedicatedWorker) || (whom & ExposedTo::SharedWorker))
-        intrinsics.append(interface);
+    intrinsics.append(interface);
 
     if (whom & ExposedTo::Window)
         window_exposed.append(interface);
diff --git a/Tests/LibWeb/Text/expected/internals.txt b/Tests/LibWeb/Text/expected/internals.txt
new file mode 100644
index 0000000000..c972133013
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/internals.txt
@@ -0,0 +1,3 @@
+[object Internals]
+function gc() { [native code] }
+OK
diff --git a/Tests/LibWeb/Text/input/internals.html b/Tests/LibWeb/Text/input/internals.html
new file mode 100644
index 0000000000..e05423e8b0
--- /dev/null
+++ b/Tests/LibWeb/Text/input/internals.html
@@ -0,0 +1,9 @@
+<script src="include.js"></script>
+<script>
+    test(() => {
+        println(window.internals);
+        println(internals.gc);
+        internals.gc();
+        println("OK");
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index af43003b01..538683710f 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -397,6 +397,7 @@ set(SOURCES
     Infra/ByteSequences.cpp
     Infra/JSON.cpp
     Infra/Strings.cpp
+    Internals/Internals.cpp
     IntersectionObserver/IntersectionObserver.cpp
     IntersectionObserver/IntersectionObserverEntry.cpp
     Layout/AudioBox.cpp
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 926c6efd61..41c974b8dc 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -454,6 +454,10 @@ namespace Web::HighResolutionTime {
 class Performance;
 }
 
+namespace Web::Internals {
+class Internals;
+}
+
 namespace Web::IntersectionObserver {
 class IntersectionObserver;
 class IntersectionObserverEntry;
diff --git a/Userland/Libraries/LibWeb/HTML/Window.cpp b/Userland/Libraries/LibWeb/HTML/Window.cpp
index d9ffdcba02..9a28a1f57b 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Window.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2020-2023, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
  * Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
  *
@@ -51,6 +51,7 @@
 #include <LibWeb/HighResolutionTime/TimeOrigin.h>
 #include <LibWeb/Infra/Base64.h>
 #include <LibWeb/Infra/CharacterTypes.h>
+#include <LibWeb/Internals/Internals.h>
 #include <LibWeb/Layout/Viewport.h>
 #include <LibWeb/Page/Page.h>
 #include <LibWeb/RequestIdleCallback/IdleDeadline.h>
@@ -805,6 +806,13 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::CallbackType>> Window::byte_length_
     return JS::NonnullGCPtr { *m_byte_length_queuing_strategy_size_function };
 }
 
+static bool s_internals_object_exposed = false;
+
+void Window::set_internals_object_exposed(bool exposed)
+{
+    s_internals_object_exposed = exposed;
+}
+
 WebIDL::ExceptionOr<void> Window::initialize_web_interfaces(Badge<WindowEnvironmentSettingsObject>)
 {
     auto& realm = this->realm();
@@ -815,6 +823,9 @@ WebIDL::ExceptionOr<void> Window::initialize_web_interfaces(Badge<WindowEnvironm
     MUST_OR_THROW_OOM(Bindings::WindowGlobalMixin::initialize(realm, *this));
     MUST_OR_THROW_OOM(WindowOrWorkerGlobalScopeMixin::initialize(realm));
 
+    if (s_internals_object_exposed)
+        define_direct_property("internals", MUST_OR_THROW_OOM(heap().allocate<Internals::Internals>(realm, realm)), JS::default_attributes);
+
     return {};
 }
 
diff --git a/Userland/Libraries/LibWeb/HTML/Window.h b/Userland/Libraries/LibWeb/HTML/Window.h
index b4a6aeb47c..b0b2ec3806 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.h
+++ b/Userland/Libraries/LibWeb/HTML/Window.h
@@ -190,6 +190,8 @@ public:
     HighResolutionTime::DOMHighResTimeStamp get_last_activation_timestamp() const { return m_last_activation_timestamp; }
     void set_last_activation_timestamp(HighResolutionTime::DOMHighResTimeStamp timestamp) { m_last_activation_timestamp = timestamp; }
 
+    static void set_internals_object_exposed(bool);
+
 private:
     explicit Window(JS::Realm&);
 
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.cpp b/Userland/Libraries/LibWeb/Internals/Internals.cpp
new file mode 100644
index 0000000000..fb8955bb53
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Internals/Internals.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/VM.h>
+#include <LibWeb/Bindings/InternalsPrototype.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Internals/Internals.h>
+
+namespace Web::Internals {
+
+Internals::Internals(JS::Realm& realm)
+    : Bindings::PlatformObject(realm)
+{
+}
+
+Internals::~Internals() = default;
+
+JS::ThrowCompletionOr<void> Internals::initialize(JS::Realm& realm)
+{
+    TRY(Base::initialize(realm));
+    Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::InternalsPrototype>(realm, "Internals"));
+    return {};
+}
+
+void Internals::gc()
+{
+    vm().heap().collect_garbage();
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.h b/Userland/Libraries/LibWeb/Internals/Internals.h
new file mode 100644
index 0000000000..cf421d5771
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Internals/Internals.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Bindings/PlatformObject.h>
+
+namespace Web::Internals {
+
+class Internals final : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(Internals, Bindings::PlatformObject);
+
+public:
+    virtual ~Internals() override;
+
+    void gc();
+
+private:
+    explicit Internals(JS::Realm&);
+    virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.idl b/Userland/Libraries/LibWeb/Internals/Internals.idl
new file mode 100644
index 0000000000..423e8e7643
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Internals/Internals.idl
@@ -0,0 +1,5 @@
+[Exposed=Nobody] interface Internals {
+
+    undefined gc();
+
+};
diff --git a/Userland/Libraries/LibWeb/idl_files.cmake b/Userland/Libraries/LibWeb/idl_files.cmake
index 0c37ffbe40..132235152c 100644
--- a/Userland/Libraries/LibWeb/idl_files.cmake
+++ b/Userland/Libraries/LibWeb/idl_files.cmake
@@ -183,6 +183,7 @@ libweb_js_bindings(HTML/WorkerGlobalScope)
 libweb_js_bindings(HTML/WorkerLocation)
 libweb_js_bindings(HTML/WorkerNavigator)
 libweb_js_bindings(HighResolutionTime/Performance)
+libweb_js_bindings(Internals/Internals)
 libweb_js_bindings(IntersectionObserver/IntersectionObserver)
 libweb_js_bindings(IntersectionObserver/IntersectionObserverEntry)
 libweb_js_bindings(NavigationTiming/PerformanceTiming)