diff --git a/Libraries/LibWeb/WebIDL/CachedAttribute.h b/Libraries/LibWeb/WebIDL/CachedAttribute.h
new file mode 100644
index 00000000000..373f1a5d8be
--- /dev/null
+++ b/Libraries/LibWeb/WebIDL/CachedAttribute.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2025, Idan Horowitz <idan.horowitz@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#define DEFINE_CACHED_ATTRIBUTE(name)                                                              \
+    GC::Ptr<JS::Object> cached_##name() const { return m_cached_##name; }                          \
+    void set_cached_##name(GC::Ptr<JS::Object> cached_##name) { m_cached_##name = cached_##name; } \
+                                                                                                   \
+private:                                                                                           \
+    GC::Ptr<JS::Object> m_cached_##name;                                                           \
+                                                                                                   \
+public:
+
+#define VISIT_CACHED_ATTRIBUTE(name) visitor.visit(m_cached_##name)
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index 93a97443ca8..58f102c4c49 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -3924,6 +3924,17 @@ JS_DEFINE_NATIVE_FUNCTION(@class_name@::@attribute.getter_callback@)
     [[maybe_unused]] auto* impl = TRY(impl_from(vm));
 )~~~");
 
+        auto cache_result = false;
+        if (attribute.extended_attributes.contains("CachedAttribute")) {
+            VERIFY(attribute.readonly);
+            cache_result = true;
+            attribute_generator.append(R"~~~(
+    auto cached_@attribute.cpp_name@ = impl->cached_@attribute.cpp_name@();
+    if (cached_@attribute.cpp_name@)
+        return cached_@attribute.cpp_name@;
+)~~~");
+        }
+
         if (attribute.extended_attributes.contains("CEReactions")) {
             // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
             attribute_generator.append(R"~~~(
@@ -4268,7 +4279,15 @@ JS_DEFINE_NATIVE_FUNCTION(@class_name@::@attribute.getter_callback@)
 )~~~");
         }
 
-        generate_return_statement(generator, *attribute.type, interface);
+        if (cache_result) {
+            generate_wrap_statement(generator, "retval", *attribute.type, interface, ByteString::formatted("cached_{} =", attribute_generator.get("attribute.cpp_name")));
+            attribute_generator.append(R"~~~(
+    impl->set_cached_@attribute.cpp_name@(cached_@attribute.cpp_name@);
+    return cached_@attribute.cpp_name@;
+)~~~");
+        } else {
+            generate_return_statement(generator, *attribute.type, interface);
+        }
 
         if (generated_reflected_element_array) {
             // 3. Let elementsAsFrozenArray be elements, converted to a FrozenArray<T>?.