diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index c4d17d65352..6370eb026b9 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -4163,6 +4163,7 @@ static void generate_using_namespace_definitions(SourceGenerator& generator)
     using namespace Web::NavigationTiming;
     using namespace Web::PerformanceTimeline;
     using namespace Web::UserTiming;
+    using namespace Web::StorageAPI;
     using namespace Web::Streams;
     using namespace Web::SVG;
     using namespace Web::UIEvents;
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/StorageAPI/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/StorageAPI/BUILD.gn
new file mode 100644
index 00000000000..e517dccf086
--- /dev/null
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/StorageAPI/BUILD.gn
@@ -0,0 +1,5 @@
+source_set("StorageAPI") {
+  configs += [ "//Userland/Libraries/LibWeb:configs" ]
+  deps = [ "//Userland/Libraries/LibWeb:all_generated" ]
+  sources = [ "StorageManager.cpp" ]
+}
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni b/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
index f9b4b5fc4b8..a609573c978 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
@@ -256,6 +256,7 @@ standard_idl_files = [
   "//Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.idl",
   "//Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverSize.idl",
   "//Userland/Libraries/LibWeb/Selection/Selection.idl",
+  "//Userland/Libraries/LibWeb/StorageAPI/StorageManager.idl",
   "//Userland/Libraries/LibWeb/Streams/ByteLengthQueuingStrategy.idl",
   "//Userland/Libraries/LibWeb/Streams/CountQueuingStrategy.idl",
   "//Userland/Libraries/LibWeb/Streams/ReadableByteStreamController.idl",
diff --git a/Tests/LibWeb/Text/expected/all-window-properties.txt b/Tests/LibWeb/Text/expected/all-window-properties.txt
index 1521f134eae..834b2f2bf3e 100644
--- a/Tests/LibWeb/Text/expected/all-window-properties.txt
+++ b/Tests/LibWeb/Text/expected/all-window-properties.txt
@@ -317,6 +317,7 @@ ShadowRoot
 SharedArrayBuffer
 StaticRange
 Storage
+StorageManager
 String
 StyleSheet
 StyleSheetList
diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 81e838a11fc..ffac28c2935 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -609,6 +609,7 @@ set(SOURCES
     ResizeObserver/ResizeObserverSize.cpp
     SecureContexts/AbstractOperations.cpp
     SRI/SRI.cpp
+    StorageAPI/StorageManager.cpp
     Streams/AbstractOperations.cpp
     Streams/ByteLengthQueuingStrategy.cpp
     Streams/CountQueuingStrategy.cpp
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 1404cad5add..d8c5768207e 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -662,6 +662,10 @@ struct UnderlyingSink;
 struct UnderlyingSource;
 }
 
+namespace Web::StorageAPI {
+class StorageManager;
+}
+
 namespace Web::SVG {
 class SVGAnimatedLength;
 class SVGAnimatedRect;
diff --git a/Userland/Libraries/LibWeb/StorageAPI/StorageManager.cpp b/Userland/Libraries/LibWeb/StorageAPI/StorageManager.cpp
new file mode 100644
index 00000000000..943500559a7
--- /dev/null
+++ b/Userland/Libraries/LibWeb/StorageAPI/StorageManager.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/StorageManagerPrototype.h>
+#include <LibWeb/HTML/Window.h>
+#include <LibWeb/StorageAPI/StorageManager.h>
+
+namespace Web::StorageAPI {
+
+JS_DEFINE_ALLOCATOR(StorageManager);
+
+WebIDL::ExceptionOr<JS::NonnullGCPtr<StorageManager>> StorageManager::create(JS::Realm& realm)
+{
+    return realm.heap().allocate<StorageManager>(realm, realm);
+}
+
+StorageManager::StorageManager(JS::Realm& realm)
+    : PlatformObject(realm)
+{
+}
+
+void StorageManager::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(StorageManager);
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/StorageAPI/StorageManager.h b/Userland/Libraries/LibWeb/StorageAPI/StorageManager.h
new file mode 100644
index 00000000000..a2156451242
--- /dev/null
+++ b/Userland/Libraries/LibWeb/StorageAPI/StorageManager.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Bindings/PlatformObject.h>
+
+namespace Web::StorageAPI {
+
+class StorageManager final : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(StorageManager, Bindings::PlatformObject);
+    JS_DECLARE_ALLOCATOR(StorageManager);
+
+public:
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<StorageManager>> create(JS::Realm&);
+    virtual ~StorageManager() override = default;
+
+private:
+    StorageManager(JS::Realm&);
+
+    virtual void initialize(JS::Realm&) override;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/StorageAPI/StorageManager.idl b/Userland/Libraries/LibWeb/StorageAPI/StorageManager.idl
new file mode 100644
index 00000000000..c20b36e48c7
--- /dev/null
+++ b/Userland/Libraries/LibWeb/StorageAPI/StorageManager.idl
@@ -0,0 +1,14 @@
+// https://storage.spec.whatwg.org/#storagemanager
+[SecureContext, Exposed=(Window,Worker)]
+interface StorageManager {
+    [FIXME] Promise<boolean> persisted();
+    [FIXME, Exposed=Window] Promise<boolean> persist();
+
+    [FIXME] Promise<StorageEstimate> estimate();
+};
+
+// https://storage.spec.whatwg.org/#dictdef-storageestimate
+dictionary StorageEstimate {
+    unsigned long long usage;
+    unsigned long long quota;
+};
diff --git a/Userland/Libraries/LibWeb/idl_files.cmake b/Userland/Libraries/LibWeb/idl_files.cmake
index 14714cd140c..ef5b3b1174e 100644
--- a/Userland/Libraries/LibWeb/idl_files.cmake
+++ b/Userland/Libraries/LibWeb/idl_files.cmake
@@ -298,6 +298,7 @@ libweb_js_bindings(SVG/SVGTransformList)
 libweb_js_bindings(SVG/SVGTSpanElement)
 libweb_js_bindings(SVG/SVGUseElement)
 libweb_js_bindings(Selection/Selection)
+libweb_js_bindings(StorageAPI/StorageManager)
 libweb_js_bindings(UIEvents/FocusEvent)
 libweb_js_bindings(UIEvents/KeyboardEvent)
 libweb_js_bindings(UIEvents/MouseEvent)