diff --git a/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp b/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
index a5946d2d908..e9160e2296d 100644
--- a/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
@@ -33,6 +33,7 @@ void LocationObject::initialize(JS::GlobalObject& global_object)
     define_native_accessor("port", port_getter, {}, attr);
 
     define_native_function("reload", reload, 0, JS::Attribute::Enumerable);
+    define_native_function("replace", replace, 1, JS::Attribute::Enumerable);
 }
 
 LocationObject::~LocationObject()
@@ -125,6 +126,17 @@ JS_DEFINE_NATIVE_FUNCTION(LocationObject::reload)
     return JS::js_undefined();
 }
 
+JS_DEFINE_NATIVE_FUNCTION(LocationObject::replace)
+{
+    auto& window = static_cast<WindowObject&>(global_object);
+    auto url = vm.argument(0).to_string(global_object);
+    if (vm.exception())
+        return {};
+    // FIXME: This needs spec compliance work.
+    window.impl().did_call_location_replace({}, move(url));
+    return JS::js_undefined();
+}
+
 // https://html.spec.whatwg.org/multipage/history.html#location-setprototypeof
 JS::ThrowCompletionOr<bool> LocationObject::internal_set_prototype_of(Object* prototype)
 {
diff --git a/Userland/Libraries/LibWeb/Bindings/LocationObject.h b/Userland/Libraries/LibWeb/Bindings/LocationObject.h
index 7062c4ae257..e89d82b22e2 100644
--- a/Userland/Libraries/LibWeb/Bindings/LocationObject.h
+++ b/Userland/Libraries/LibWeb/Bindings/LocationObject.h
@@ -30,6 +30,7 @@ public:
 
 private:
     JS_DECLARE_NATIVE_FUNCTION(reload);
+    JS_DECLARE_NATIVE_FUNCTION(replace);
 
     JS_DECLARE_NATIVE_FUNCTION(href_getter);
     JS_DECLARE_NATIVE_FUNCTION(href_setter);
diff --git a/Userland/Libraries/LibWeb/DOM/Window.cpp b/Userland/Libraries/LibWeb/DOM/Window.cpp
index aa02decf671..79960998cf0 100644
--- a/Userland/Libraries/LibWeb/DOM/Window.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Window.cpp
@@ -234,6 +234,15 @@ void Window::did_call_location_reload(Badge<Bindings::LocationObject>)
     frame->loader().load(associated_document().url(), FrameLoader::Type::Reload);
 }
 
+void Window::did_call_location_replace(Badge<Bindings::LocationObject>, String url)
+{
+    auto* frame = associated_document().browsing_context();
+    if (!frame)
+        return;
+    auto new_url = associated_document().parse_url(url);
+    frame->loader().load(move(new_url), FrameLoader::Type::Navigation);
+}
+
 bool Window::dispatch_event(NonnullRefPtr<Event> event)
 {
     return EventDispatcher::dispatch(*this, event, true);
diff --git a/Userland/Libraries/LibWeb/DOM/Window.h b/Userland/Libraries/LibWeb/DOM/Window.h
index 563afc4ed18..3ee7d723c43 100644
--- a/Userland/Libraries/LibWeb/DOM/Window.h
+++ b/Userland/Libraries/LibWeb/DOM/Window.h
@@ -62,6 +62,7 @@ public:
 
     void did_set_location_href(Badge<Bindings::LocationObject>, AK::URL const& new_href);
     void did_call_location_reload(Badge<Bindings::LocationObject>);
+    void did_call_location_replace(Badge<Bindings::LocationObject>, String url);
 
     Bindings::WindowObject* wrapper() { return m_wrapper; }
     Bindings::WindowObject const* wrapper() const { return m_wrapper; }