diff --git a/Userland/Libraries/LibWeb/Crypto/Crypto.cpp b/Userland/Libraries/LibWeb/Crypto/Crypto.cpp
index a5c0dc17c2..672bfe6bc2 100644
--- a/Userland/Libraries/LibWeb/Crypto/Crypto.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/Crypto.cpp
@@ -8,21 +8,21 @@
 #include <AK/Random.h>
 #include <AK/StringBuilder.h>
 #include <LibJS/Runtime/TypedArray.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Crypto/Crypto.h>
 #include <LibWeb/Crypto/SubtleCrypto.h>
-#include <LibWeb/HTML/Window.h>
 
 namespace Web::Crypto {
 
-JS::NonnullGCPtr<Crypto> Crypto::create(HTML::Window& window)
+JS::NonnullGCPtr<Crypto> Crypto::create(JS::Realm& realm)
 {
-    return *window.heap().allocate<Crypto>(window.realm(), window);
+    return *realm.heap().allocate<Crypto>(realm, realm);
 }
 
-Crypto::Crypto(HTML::Window& window)
-    : PlatformObject(window.realm())
+Crypto::Crypto(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("Crypto"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "Crypto"));
 }
 
 Crypto::~Crypto() = default;
@@ -30,7 +30,7 @@ Crypto::~Crypto() = default;
 void Crypto::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    m_subtle = SubtleCrypto::create(global_object());
+    m_subtle = SubtleCrypto::create(realm);
 }
 
 JS::NonnullGCPtr<SubtleCrypto> Crypto::subtle() const
@@ -43,16 +43,16 @@ WebIDL::ExceptionOr<JS::Value> Crypto::get_random_values(JS::Value array) const
 {
     // 1. If array is not an Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array, then throw a TypeMismatchError and terminate the algorithm.
     if (!array.is_object() || !(is<JS::Int8Array>(array.as_object()) || is<JS::Uint8Array>(array.as_object()) || is<JS::Uint8ClampedArray>(array.as_object()) || is<JS::Int16Array>(array.as_object()) || is<JS::Uint16Array>(array.as_object()) || is<JS::Int32Array>(array.as_object()) || is<JS::Uint32Array>(array.as_object()) || is<JS::BigInt64Array>(array.as_object()) || is<JS::BigUint64Array>(array.as_object())))
-        return WebIDL::TypeMismatchError::create(global_object(), "array must be one of Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array");
+        return WebIDL::TypeMismatchError::create(realm(), "array must be one of Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array");
     auto& typed_array = static_cast<JS::TypedArrayBase&>(array.as_object());
 
     // 2. If the byteLength of array is greater than 65536, throw a QuotaExceededError and terminate the algorithm.
     if (typed_array.byte_length() > 65536)
-        return WebIDL::QuotaExceededError::create(global_object(), "array's byteLength may not be greater than 65536");
+        return WebIDL::QuotaExceededError::create(realm(), "array's byteLength may not be greater than 65536");
 
     // IMPLEMENTATION DEFINED: If the viewed array buffer is detached, throw a InvalidStateError and terminate the algorithm.
     if (typed_array.viewed_array_buffer()->is_detached())
-        return WebIDL::InvalidStateError::create(global_object(), "array is detached");
+        return WebIDL::InvalidStateError::create(realm(), "array is detached");
     // FIXME: Handle SharedArrayBuffers
 
     // 3. Overwrite all elements of array with cryptographically strong random values of the appropriate type.
diff --git a/Userland/Libraries/LibWeb/Crypto/Crypto.h b/Userland/Libraries/LibWeb/Crypto/Crypto.h
index dececef8b5..40fba4f071 100644
--- a/Userland/Libraries/LibWeb/Crypto/Crypto.h
+++ b/Userland/Libraries/LibWeb/Crypto/Crypto.h
@@ -16,7 +16,7 @@ class Crypto : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(Crypto, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<Crypto> create(HTML::Window&);
+    static JS::NonnullGCPtr<Crypto> create(JS::Realm&);
 
     virtual ~Crypto() override;
 
@@ -29,7 +29,7 @@ protected:
     virtual void visit_edges(Cell::Visitor&) override;
 
 private:
-    explicit Crypto(HTML::Window&);
+    explicit Crypto(JS::Realm&);
     virtual void initialize(JS::Realm&) override;
 
     JS::GCPtr<SubtleCrypto> m_subtle;
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
index 0c67a0bc40..4fd53936d8 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
@@ -7,37 +7,37 @@
 #include <LibCrypto/Hash/HashManager.h>
 #include <LibJS/Runtime/ArrayBuffer.h>
 #include <LibJS/Runtime/Promise.h>
-#include <LibWeb/Bindings/MainThreadVM.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Crypto/SubtleCrypto.h>
 #include <LibWeb/WebIDL/AbstractOperations.h>
 #include <LibWeb/WebIDL/DOMException.h>
 
 namespace Web::Crypto {
 
-JS::NonnullGCPtr<SubtleCrypto> SubtleCrypto::create(HTML::Window& window)
+JS::NonnullGCPtr<SubtleCrypto> SubtleCrypto::create(JS::Realm& realm)
 {
-    return *window.heap().allocate<SubtleCrypto>(window.realm(), window);
+    return *realm.heap().allocate<SubtleCrypto>(realm, realm);
 }
 
-SubtleCrypto::SubtleCrypto(HTML::Window& window)
-    : PlatformObject(window.realm())
+SubtleCrypto::SubtleCrypto(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("SubtleCrypto"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "SubtleCrypto"));
 }
 
 SubtleCrypto::~SubtleCrypto() = default;
 
+// https://w3c.github.io/webcrypto/#dfn-SubtleCrypto-method-digest
 JS::Promise* SubtleCrypto::digest(String const& algorithm, JS::Handle<JS::Object> const& data)
 {
-    auto& vm = Bindings::main_thread_vm();
-    auto& realm = *vm.current_realm();
+    auto& realm = this->realm();
 
     // 1. Let algorithm be the algorithm parameter passed to the digest() method.
 
     // 2. Let data be the result of getting a copy of the bytes held by the data parameter passed to the digest() method.
     auto data_buffer_or_error = WebIDL::get_buffer_source_copy(*data.cell());
     if (data_buffer_or_error.is_error()) {
-        auto error = WebIDL::OperationError::create(global_object(), "Failed to copy bytes from ArrayBuffer");
+        auto error = WebIDL::OperationError::create(realm, "Failed to copy bytes from ArrayBuffer");
         auto* promise = JS::Promise::create(realm);
         promise->reject(error.ptr());
         return promise;
@@ -58,7 +58,7 @@ JS::Promise* SubtleCrypto::digest(String const& algorithm, JS::Handle<JS::Object
     }
     // 4. If an error occurred, return a Promise rejected with normalizedAlgorithm.
     else {
-        auto error = WebIDL::NotSupportedError::create(global_object(), String::formatted("Invalid hash function '{}'", algorithm));
+        auto error = WebIDL::NotSupportedError::create(realm, String::formatted("Invalid hash function '{}'", algorithm));
         auto* promise = JS::Promise::create(realm);
         promise->reject(error.ptr());
         return promise;
@@ -79,7 +79,7 @@ JS::Promise* SubtleCrypto::digest(String const& algorithm, JS::Handle<JS::Object
     auto digest = hash.digest();
     auto result_buffer = ByteBuffer::copy(digest.immutable_data(), hash.digest_size());
     if (result_buffer.is_error()) {
-        auto error = WebIDL::OperationError::create(global_object(), "Failed to create result buffer");
+        auto error = WebIDL::OperationError::create(realm, "Failed to create result buffer");
         promise->reject(error.ptr());
         return promise;
     }
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
index 8ac7df8c27..9099500eb6 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
@@ -15,14 +15,14 @@ class SubtleCrypto final : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(SubtleCrypto, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<SubtleCrypto> create(HTML::Window&);
+    static JS::NonnullGCPtr<SubtleCrypto> create(JS::Realm&);
 
     virtual ~SubtleCrypto() override;
 
     JS::Promise* digest(String const& algorithm, JS::Handle<JS::Object> const& data);
 
 private:
-    explicit SubtleCrypto(HTML::Window&);
+    explicit SubtleCrypto(JS::Realm&);
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp b/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp
index 5301470c46..3a23c32f9f 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp
+++ b/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp
@@ -6,30 +6,30 @@
 
 #include <AK/FlyString.h>
 #include <LibJS/Runtime/TypedArray.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Encoding/TextDecoder.h>
-#include <LibWeb/HTML/Window.h>
 #include <LibWeb/WebIDL/AbstractOperations.h>
 
 namespace Web::Encoding {
 
-WebIDL::ExceptionOr<JS::NonnullGCPtr<TextDecoder>> TextDecoder::create_with_global_object(HTML::Window& window, FlyString encoding)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<TextDecoder>> TextDecoder::construct_impl(JS::Realm& realm, FlyString encoding)
 {
     auto decoder = TextCodec::decoder_for(encoding);
     if (!decoder)
         return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, String::formatted("Invalid encoding {}", encoding) };
 
-    return JS::NonnullGCPtr(*window.heap().allocate<TextDecoder>(window.realm(), window, *decoder, move(encoding), false, false));
+    return JS::NonnullGCPtr(*realm.heap().allocate<TextDecoder>(realm, realm, *decoder, move(encoding), false, false));
 }
 
 // https://encoding.spec.whatwg.org/#dom-textdecoder
-TextDecoder::TextDecoder(HTML::Window& window, TextCodec::Decoder& decoder, FlyString encoding, bool fatal, bool ignore_bom)
-    : PlatformObject(window.realm())
+TextDecoder::TextDecoder(JS::Realm& realm, TextCodec::Decoder& decoder, FlyString encoding, bool fatal, bool ignore_bom)
+    : PlatformObject(realm)
     , m_decoder(decoder)
     , m_encoding(move(encoding))
     , m_fatal(fatal)
     , m_ignore_bom(ignore_bom)
 {
-    set_prototype(&window.cached_web_prototype("TextDecoder"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "TextDecoder"));
 }
 
 TextDecoder::~TextDecoder() = default;
@@ -41,7 +41,7 @@ WebIDL::ExceptionOr<String> TextDecoder::decode(JS::Handle<JS::Object> const& in
 
     auto data_buffer_or_error = WebIDL::get_buffer_source_copy(*input.cell());
     if (data_buffer_or_error.is_error())
-        return WebIDL::OperationError::create(global_object(), "Failed to copy bytes from ArrayBuffer");
+        return WebIDL::OperationError::create(realm(), "Failed to copy bytes from ArrayBuffer");
     auto& data_buffer = data_buffer_or_error.value();
     return m_decoder.to_utf8({ data_buffer.data(), data_buffer.size() });
 }
diff --git a/Userland/Libraries/LibWeb/Encoding/TextDecoder.h b/Userland/Libraries/LibWeb/Encoding/TextDecoder.h
index fe37ccec45..b5b32fea0b 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextDecoder.h
+++ b/Userland/Libraries/LibWeb/Encoding/TextDecoder.h
@@ -21,7 +21,7 @@ class TextDecoder : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(TextDecoder, Bindings::PlatformObject);
 
 public:
-    static WebIDL::ExceptionOr<JS::NonnullGCPtr<TextDecoder>> create_with_global_object(HTML::Window&, FlyString encoding);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<TextDecoder>> construct_impl(JS::Realm&, FlyString encoding);
 
     virtual ~TextDecoder() override;
 
@@ -33,7 +33,7 @@ public:
 
 private:
     // https://encoding.spec.whatwg.org/#dom-textdecoder
-    TextDecoder(HTML::Window&, TextCodec::Decoder&, FlyString encoding, bool fatal, bool ignore_bom);
+    TextDecoder(JS::Realm&, TextCodec::Decoder&, FlyString encoding, bool fatal, bool ignore_bom);
 
     TextCodec::Decoder& m_decoder;
     FlyString m_encoding;
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp b/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
index 8889d0b34f..5f0c1ebda5 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
@@ -6,20 +6,20 @@
 
 #include <AK/FlyString.h>
 #include <LibJS/Runtime/TypedArray.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Encoding/TextEncoder.h>
-#include <LibWeb/HTML/Window.h>
 
 namespace Web::Encoding {
 
-JS::NonnullGCPtr<TextEncoder> TextEncoder::create_with_global_object(HTML::Window& window)
+JS::NonnullGCPtr<TextEncoder> TextEncoder::construct_impl(JS::Realm& realm)
 {
-    return *window.heap().allocate<TextEncoder>(window.realm(), window);
+    return *realm.heap().allocate<TextEncoder>(realm, realm);
 }
 
-TextEncoder::TextEncoder(HTML::Window& window)
-    : PlatformObject(window.realm())
+TextEncoder::TextEncoder(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("TextEncoder"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "TextEncoder"));
 }
 
 TextEncoder::~TextEncoder() = default;
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.h b/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
index d3cf0fb425..e27f96b368 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
@@ -20,7 +20,7 @@ class TextEncoder final : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(TextEncoder, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<TextEncoder> create_with_global_object(HTML::Window&);
+    static JS::NonnullGCPtr<TextEncoder> construct_impl(JS::Realm&);
 
     virtual ~TextEncoder() override;
 
@@ -30,7 +30,7 @@ public:
 
 protected:
     // https://encoding.spec.whatwg.org/#dom-textencoder
-    explicit TextEncoder(HTML::Window&);
+    explicit TextEncoder(JS::Realm&);
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp b/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
index 163b0ddafb..5f5964d972 100644
--- a/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
@@ -7,7 +7,6 @@
 
 #include <LibWeb/Fetch/BodyInit.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Bodies.h>
-#include <LibWeb/HTML/Window.h>
 #include <LibWeb/URL/URLSearchParams.h>
 #include <LibWeb/WebIDL/AbstractOperations.h>
 #include <LibWeb/WebIDL/ExceptionOr.h>
@@ -22,7 +21,7 @@ WebIDL::ExceptionOr<Infrastructure::BodyWithType> extract_body(JS::Realm& realm,
     if (auto const* handle = object.get_pointer<JS::Handle<Streams::ReadableStream>>()) {
         stream = const_cast<Streams::ReadableStream*>(handle->cell());
     } else {
-        stream = realm.heap().allocate<Streams::ReadableStream>(realm, verify_cast<HTML::Window>(realm.global_object()));
+        stream = realm.heap().allocate<Streams::ReadableStream>(realm, realm);
     }
 
     // FIXME: 2. Let action be null.
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
index 6de71b696f..eb4e74858e 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
@@ -30,11 +30,10 @@ WebIDL::ExceptionOr<Body> Body::clone() const
 
     auto& vm = Bindings::main_thread_vm();
     auto& realm = *vm.current_realm();
-    auto& window = verify_cast<HTML::Window>(realm.global_object());
 
     // FIXME: 1. Let « out1, out2 » be the result of teeing body’s stream.
     // FIXME: 2. Set body’s stream to out1.
-    auto* out2 = vm.heap().allocate<Streams::ReadableStream>(realm, window);
+    auto* out2 = vm.heap().allocate<Streams::ReadableStream>(realm, realm);
 
     // 3. Return a body whose stream is out2 and other members are copied from body.
     return Body { JS::make_handle(out2), m_source, m_length };
diff --git a/Userland/Libraries/LibWeb/HTML/Window.cpp b/Userland/Libraries/LibWeb/HTML/Window.cpp
index 82b9360de3..cfeafd2ab8 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Window.cpp
@@ -658,7 +658,7 @@ void Window::invoke_idle_callbacks()
         // 1. Pop the top callback from window's list of runnable idle callbacks.
         auto callback = m_runnable_idle_callbacks.take_first();
         // 2. Let deadlineArg be a new IdleDeadline whose [get deadline time algorithm] is getDeadline.
-        auto deadline_arg = RequestIdleCallback::IdleDeadline::create(*this);
+        auto deadline_arg = RequestIdleCallback::IdleDeadline::create(realm());
         // 3. Call callback with deadlineArg as its argument. If an uncaught runtime script error occurs, then report the exception.
         auto result = callback->invoke(deadline_arg);
         if (result.is_error())
@@ -744,7 +744,7 @@ void Window::initialize_web_interfaces(Badge<WindowEnvironmentSettingsObject>)
 
     Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::WindowPrototype>(realm, "Window"));
 
-    m_crypto = Crypto::Crypto::create(*this);
+    m_crypto = Crypto::Crypto::create(realm);
 
     // FIXME: These should be native accessors, not properties
     define_direct_property("window", this, JS::Attribute::Enumerable);
diff --git a/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp b/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp
index 84c8ac48e3..d73c1321e2 100644
--- a/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp
+++ b/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp
@@ -17,7 +17,7 @@ Performance::Performance(HTML::Window& window)
     : DOM::EventTarget(window.realm())
     , m_window(window)
 {
-    set_prototype(&window.cached_web_prototype("Performance"));
+    set_prototype(&Bindings::cached_web_prototype(realm(), "Performance"));
     m_timer.start();
 }
 
diff --git a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
index 9b6917880e..19b58562b2 100644
--- a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
+++ b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
@@ -4,26 +4,26 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/DOM/Element.h>
-#include <LibWeb/HTML/Window.h>
 #include <LibWeb/IntersectionObserver/IntersectionObserver.h>
 
 namespace Web::IntersectionObserver {
 
 // https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-intersectionobserver
-JS::NonnullGCPtr<IntersectionObserver> IntersectionObserver::create_with_global_object(HTML::Window& window, WebIDL::CallbackType* callback, IntersectionObserverInit const& options)
+JS::NonnullGCPtr<IntersectionObserver> IntersectionObserver::construct_impl(JS::Realm& realm, WebIDL::CallbackType* callback, IntersectionObserverInit const& options)
 {
     // FIXME: Implement
     (void)callback;
     (void)options;
 
-    return *window.heap().allocate<IntersectionObserver>(window.realm(), window);
+    return *realm.heap().allocate<IntersectionObserver>(realm, realm);
 }
 
-IntersectionObserver::IntersectionObserver(HTML::Window& window)
-    : PlatformObject(window.realm())
+IntersectionObserver::IntersectionObserver(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("IntersectionObserver"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "IntersectionObserver"));
 }
 
 IntersectionObserver::~IntersectionObserver() = default;
diff --git a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h
index 266e885887..418cce0cc8 100644
--- a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h
+++ b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.h
@@ -22,7 +22,7 @@ class IntersectionObserver : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(IntersectionObserver, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<IntersectionObserver> create_with_global_object(HTML::Window&, WebIDL::CallbackType* callback, IntersectionObserverInit const& options = {});
+    static JS::NonnullGCPtr<IntersectionObserver> construct_impl(JS::Realm&, WebIDL::CallbackType* callback, IntersectionObserverInit const& options = {});
 
     virtual ~IntersectionObserver() override;
 
@@ -31,7 +31,7 @@ public:
     void disconnect();
 
 private:
-    explicit IntersectionObserver(HTML::Window&);
+    explicit IntersectionObserver(JS::Realm&);
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp b/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp
index 552b8899ca..cc5f507d00 100644
--- a/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp
+++ b/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp
@@ -12,7 +12,7 @@ PerformanceTiming::PerformanceTiming(HTML::Window& window)
     : PlatformObject(window.realm())
     , m_window(window)
 {
-    set_prototype(&window.cached_web_prototype("PerformanceTiming"));
+    set_prototype(&Bindings::cached_web_prototype(realm(), "PerformanceTiming"));
 }
 
 PerformanceTiming::~PerformanceTiming() = default;
diff --git a/Userland/Libraries/LibWeb/Page/EventHandler.cpp b/Userland/Libraries/LibWeb/Page/EventHandler.cpp
index 63279afdf6..593636a231 100644
--- a/Userland/Libraries/LibWeb/Page/EventHandler.cpp
+++ b/Userland/Libraries/LibWeb/Page/EventHandler.cpp
@@ -203,12 +203,12 @@ bool EventHandler::handle_mouseup(Gfx::IntPoint const& position, unsigned button
             }
 
             auto offset = compute_mouse_event_offset(position, *layout_node);
-            node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->document().window(), UIEvents::EventNames::mouseup, offset.x(), offset.y(), position.x(), position.y(), button));
+            node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->realm(), UIEvents::EventNames::mouseup, offset.x(), offset.y(), position.x(), position.y(), button));
             handled_event = true;
 
             bool run_activation_behavior = true;
             if (node.ptr() == m_mousedown_target && button == GUI::MouseButton::Primary) {
-                run_activation_behavior = node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->document().window(), UIEvents::EventNames::click, offset.x(), offset.y(), position.x(), position.y(), button));
+                run_activation_behavior = node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->realm(), UIEvents::EventNames::click, offset.x(), offset.y(), position.x(), position.y(), button));
             }
 
             if (run_activation_behavior) {
@@ -332,7 +332,7 @@ bool EventHandler::handle_mousedown(Gfx::IntPoint const& position, unsigned butt
 
         m_mousedown_target = node.ptr();
         auto offset = compute_mouse_event_offset(position, *layout_node);
-        node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->document().window(), UIEvents::EventNames::mousedown, offset.x(), offset.y(), position.x(), position.y(), button));
+        node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->realm(), UIEvents::EventNames::mousedown, offset.x(), offset.y(), position.x(), position.y(), button));
     }
 
     // NOTE: Dispatching an event may have disturbed the world.
@@ -453,7 +453,7 @@ bool EventHandler::handle_mousemove(Gfx::IntPoint const& position, unsigned butt
             }
 
             auto offset = compute_mouse_event_offset(position, *layout_node);
-            node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->document().window(), UIEvents::EventNames::mousemove, offset.x(), offset.y(), position.x(), position.y()));
+            node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->realm(), UIEvents::EventNames::mousemove, offset.x(), offset.y(), position.x(), position.y()));
             // NOTE: Dispatching an event may have disturbed the world.
             if (!paint_root() || paint_root() != node->document().paint_box())
                 return true;
@@ -542,7 +542,7 @@ bool EventHandler::handle_doubleclick(Gfx::IntPoint const& position, unsigned bu
         return false;
 
     auto offset = compute_mouse_event_offset(position, *layout_node);
-    node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->document().window(), UIEvents::EventNames::dblclick, offset.x(), offset.y(), position.x(), position.y(), button));
+    node->dispatch_event(*UIEvents::MouseEvent::create_from_platform_event(node->realm(), UIEvents::EventNames::dblclick, offset.x(), offset.y(), position.x(), position.y(), button));
 
     // NOTE: Dispatching an event may have disturbed the world.
     if (!paint_root() || paint_root() != node->document().paint_box())
@@ -721,7 +721,7 @@ bool EventHandler::handle_keydown(KeyCode key, unsigned modifiers, u32 code_poin
         return true;
     }
 
-    auto event = UIEvents::KeyboardEvent::create_from_platform_event(document->window(), UIEvents::EventNames::keydown, key, modifiers, code_point);
+    auto event = UIEvents::KeyboardEvent::create_from_platform_event(document->realm(), UIEvents::EventNames::keydown, key, modifiers, code_point);
 
     if (JS::GCPtr<DOM::Element> focused_element = document->focused_element())
         return focused_element->dispatch_event(*event);
@@ -738,7 +738,7 @@ bool EventHandler::handle_keyup(KeyCode key, unsigned modifiers, u32 code_point)
     if (!document)
         return false;
 
-    auto event = UIEvents::KeyboardEvent::create_from_platform_event(document->window(), UIEvents::EventNames::keyup, key, modifiers, code_point);
+    auto event = UIEvents::KeyboardEvent::create_from_platform_event(document->realm(), UIEvents::EventNames::keyup, key, modifiers, code_point);
 
     if (JS::GCPtr<DOM::Element> focused_element = document->focused_element())
         return document->focused_element()->dispatch_event(*event);
diff --git a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp
index 2012c50ac6..e854ba9944 100644
--- a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp
+++ b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp
@@ -11,16 +11,16 @@
 
 namespace Web::RequestIdleCallback {
 
-JS::NonnullGCPtr<IdleDeadline> IdleDeadline::create(HTML::Window& window, bool did_timeout)
+JS::NonnullGCPtr<IdleDeadline> IdleDeadline::create(JS::Realm& realm, bool did_timeout)
 {
-    return *window.heap().allocate<IdleDeadline>(window.realm(), window, did_timeout);
+    return *realm.heap().allocate<IdleDeadline>(realm, realm, did_timeout);
 }
 
-IdleDeadline::IdleDeadline(HTML::Window& window, bool did_timeout)
-    : PlatformObject(window.realm())
+IdleDeadline::IdleDeadline(JS::Realm& realm, bool did_timeout)
+    : PlatformObject(realm)
     , m_did_timeout(did_timeout)
 {
-    set_prototype(&window.cached_web_prototype("IdleDeadline"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "IdleDeadline"));
 }
 
 IdleDeadline::~IdleDeadline() = default;
diff --git a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h
index aad75d2152..8e08ca0747 100644
--- a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h
+++ b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.h
@@ -16,14 +16,14 @@ class IdleDeadline final : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(IdleDeadline, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<IdleDeadline> create(HTML::Window&, bool did_timeout = false);
+    static JS::NonnullGCPtr<IdleDeadline> create(JS::Realm&, bool did_timeout = false);
     virtual ~IdleDeadline() override;
 
     double time_remaining() const;
     bool did_timeout() const { return m_did_timeout; }
 
 private:
-    IdleDeadline(HTML::Window&, bool did_timeout);
+    IdleDeadline(JS::Realm&, bool did_timeout);
 
     bool m_did_timeout { false };
 };
diff --git a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp
index e4a6f74a63..98d340a175 100644
--- a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp
+++ b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp
@@ -4,24 +4,24 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/DOM/Element.h>
-#include <LibWeb/HTML/Window.h>
 #include <LibWeb/ResizeObserver/ResizeObserver.h>
 
 namespace Web::ResizeObserver {
 
 // https://drafts.csswg.org/resize-observer/#dom-resizeobserver-resizeobserver
-JS::NonnullGCPtr<ResizeObserver> ResizeObserver::create_with_global_object(HTML::Window& window, WebIDL::CallbackType* callback)
+JS::NonnullGCPtr<ResizeObserver> ResizeObserver::construct_impl(JS::Realm& realm, WebIDL::CallbackType* callback)
 {
     // FIXME: Implement
     (void)callback;
-    return *window.heap().allocate<ResizeObserver>(window.realm(), window);
+    return *realm.heap().allocate<ResizeObserver>(realm, realm);
 }
 
-ResizeObserver::ResizeObserver(HTML::Window& window)
-    : PlatformObject(window.realm())
+ResizeObserver::ResizeObserver(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("ResizeObserver"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "ResizeObserver"));
 }
 
 ResizeObserver::~ResizeObserver() = default;
diff --git a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.h b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.h
index dee26b65e5..591ed454cd 100644
--- a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.h
+++ b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.h
@@ -19,7 +19,7 @@ class ResizeObserver : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(ResizeObserver, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<ResizeObserver> create_with_global_object(HTML::Window&, WebIDL::CallbackType* callback);
+    static JS::NonnullGCPtr<ResizeObserver> construct_impl(JS::Realm&, WebIDL::CallbackType* callback);
 
     virtual ~ResizeObserver() override;
 
@@ -28,7 +28,7 @@ public:
     void disconnect();
 
 private:
-    explicit ResizeObserver(HTML::Window&);
+    explicit ResizeObserver(JS::Realm&);
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/Selection/Selection.cpp b/Userland/Libraries/LibWeb/Selection/Selection.cpp
index d90894e6d4..250bcb48b8 100644
--- a/Userland/Libraries/LibWeb/Selection/Selection.cpp
+++ b/Userland/Libraries/LibWeb/Selection/Selection.cpp
@@ -4,20 +4,20 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibWeb/HTML/Window.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Selection/Selection.h>
 
 namespace Web::Selection {
 
-JS::NonnullGCPtr<Selection> Selection::create(HTML::Window& window)
+JS::NonnullGCPtr<Selection> Selection::create(JS::Realm& realm)
 {
-    return *window.heap().allocate<Selection>(window.realm(), window);
+    return *realm.heap().allocate<Selection>(realm, realm);
 }
 
-Selection::Selection(HTML::Window& window)
-    : PlatformObject(window.realm())
+Selection::Selection(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("Selection"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "Selection"));
 }
 
 Selection::~Selection() = default;
diff --git a/Userland/Libraries/LibWeb/Selection/Selection.h b/Userland/Libraries/LibWeb/Selection/Selection.h
index 05faf1d56f..fc4949cc57 100644
--- a/Userland/Libraries/LibWeb/Selection/Selection.h
+++ b/Userland/Libraries/LibWeb/Selection/Selection.h
@@ -14,7 +14,7 @@ class Selection final : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(Selection, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<Selection> create(HTML::Window&);
+    static JS::NonnullGCPtr<Selection> create(JS::Realm&);
 
     virtual ~Selection() override;
 
@@ -43,7 +43,7 @@ public:
     String to_string() const;
 
 private:
-    explicit Selection(HTML::Window&);
+    explicit Selection(JS::Realm&);
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
index eeaa7efaa5..bbd1b21af8 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
@@ -4,24 +4,25 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibWeb/HTML/Window.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Streams/AbstractOperations.h>
 #include <LibWeb/Streams/ReadableStream.h>
+#include <LibWeb/WebIDL/ExceptionOr.h>
 
 namespace Web::Streams {
 
 // https://streams.spec.whatwg.org/#rs-constructor
-WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStream>> ReadableStream::create_with_global_object(HTML::Window& window)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStream>> ReadableStream::construct_impl(JS::Realm& realm)
 {
-    auto* readable_stream = window.heap().allocate<ReadableStream>(window.realm(), window);
+    auto* readable_stream = realm.heap().allocate<ReadableStream>(realm, realm);
 
     return JS::NonnullGCPtr { *readable_stream };
 }
 
-ReadableStream::ReadableStream(HTML::Window& window)
-    : PlatformObject(window.realm())
+ReadableStream::ReadableStream(JS::Realm& realm)
+    : PlatformObject(realm)
 {
-    set_prototype(&window.cached_web_prototype("ReadableStream"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "ReadableStream"));
 }
 
 ReadableStream::~ReadableStream() = default;
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStream.h b/Userland/Libraries/LibWeb/Streams/ReadableStream.h
index 94f89096f2..ec18af5397 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStream.h
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStream.h
@@ -24,7 +24,7 @@ public:
         Errored,
     };
 
-    static WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStream>> create_with_global_object(HTML::Window&);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStream>> construct_impl(JS::Realm&);
 
     virtual ~ReadableStream() override;
 
@@ -39,7 +39,7 @@ public:
     bool is_disturbed() const;
 
 private:
-    explicit ReadableStream(HTML::Window&);
+    explicit ReadableStream(JS::Realm&);
 
     virtual void visit_edges(Cell::Visitor&) override;
 
diff --git a/Userland/Libraries/LibWeb/URL/URL.cpp b/Userland/Libraries/LibWeb/URL/URL.cpp
index 9302c0f818..8f742edb63 100644
--- a/Userland/Libraries/LibWeb/URL/URL.cpp
+++ b/Userland/Libraries/LibWeb/URL/URL.cpp
@@ -6,17 +6,17 @@
  */
 
 #include <AK/URLParser.h>
-#include <LibWeb/HTML/Window.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/URL/URL.h>
 
 namespace Web::URL {
 
-JS::NonnullGCPtr<URL> URL::create(HTML::Window& window, AK::URL url, JS::NonnullGCPtr<URLSearchParams> query)
+JS::NonnullGCPtr<URL> URL::create(JS::Realm& realm, AK::URL url, JS::NonnullGCPtr<URLSearchParams> query)
 {
-    return *window.heap().allocate<URL>(window.realm(), window, move(url), move(query));
+    return *realm.heap().allocate<URL>(realm, realm, move(url), move(query));
 }
 
-WebIDL::ExceptionOr<JS::NonnullGCPtr<URL>> URL::create_with_global_object(HTML::Window& window, String const& url, String const& base)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<URL>> URL::construct_impl(JS::Realm& realm, String const& url, String const& base)
 {
     // 1. Let parsedBase be null.
     Optional<AK::URL> parsed_base;
@@ -41,21 +41,21 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<URL>> URL::create_with_global_object(HTML::
     auto& query = parsed_url.query().is_null() ? String::empty() : parsed_url.query();
     // 6. Set this’s URL to parsedURL.
     // 7. Set this’s query object to a new URLSearchParams object.
-    auto query_object = MUST(URLSearchParams::create_with_global_object(window, query));
+    auto query_object = MUST(URLSearchParams::construct_impl(realm, query));
     // 8. Initialize this’s query object with query.
-    auto result_url = URL::create(window, move(parsed_url), move(query_object));
+    auto result_url = URL::create(realm, move(parsed_url), move(query_object));
     // 9. Set this’s query object’s URL object to this.
     result_url->m_query->m_url = result_url;
 
     return result_url;
 }
 
-URL::URL(HTML::Window& window, AK::URL url, JS::NonnullGCPtr<URLSearchParams> query)
-    : PlatformObject(window.realm())
+URL::URL(JS::Realm& realm, AK::URL url, JS::NonnullGCPtr<URLSearchParams> query)
+    : PlatformObject(realm)
     , m_url(move(url))
     , m_query(move(query))
 {
-    set_prototype(&window.cached_web_prototype("URL"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "URL"));
 }
 
 URL::~URL() = default;
diff --git a/Userland/Libraries/LibWeb/URL/URL.h b/Userland/Libraries/LibWeb/URL/URL.h
index 849a51871b..015480d841 100644
--- a/Userland/Libraries/LibWeb/URL/URL.h
+++ b/Userland/Libraries/LibWeb/URL/URL.h
@@ -19,8 +19,8 @@ class URL : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(URL, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<URL> create(HTML::Window&, AK::URL url, JS::NonnullGCPtr<URLSearchParams> query);
-    static WebIDL::ExceptionOr<JS::NonnullGCPtr<URL>> create_with_global_object(HTML::Window&, String const& url, String const& base);
+    static JS::NonnullGCPtr<URL> create(JS::Realm&, AK::URL url, JS::NonnullGCPtr<URLSearchParams> query);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<URL>> construct_impl(JS::Realm&, String const& url, String const& base);
 
     virtual ~URL() override;
 
@@ -63,7 +63,7 @@ public:
     void set_query(Badge<URLSearchParams>, String query) { m_url.set_query(move(query)); }
 
 private:
-    URL(HTML::Window&, AK::URL, JS::NonnullGCPtr<URLSearchParams> query);
+    URL(JS::Realm&, AK::URL, JS::NonnullGCPtr<URLSearchParams> query);
 
     virtual void visit_edges(Cell::Visitor&) override;
 
diff --git a/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp b/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp
index ef12b26927..f928b64e5f 100644
--- a/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp
+++ b/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp
@@ -7,17 +7,17 @@
 #include <AK/QuickSort.h>
 #include <AK/StringBuilder.h>
 #include <AK/Utf8View.h>
-#include <LibWeb/HTML/Window.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/URL/URL.h>
 #include <LibWeb/URL/URLSearchParams.h>
 
 namespace Web::URL {
 
-URLSearchParams::URLSearchParams(HTML::Window& window, Vector<QueryParam> list)
-    : PlatformObject(window.realm())
+URLSearchParams::URLSearchParams(JS::Realm& realm, Vector<QueryParam> list)
+    : PlatformObject(realm)
     , m_list(move(list))
 {
-    set_prototype(&window.cached_web_prototype("URLSearchParams"));
+    set_prototype(&Bindings::cached_web_prototype(realm, "URLSearchParams"));
 }
 
 URLSearchParams::~URLSearchParams() = default;
@@ -82,14 +82,14 @@ Vector<QueryParam> url_decode(StringView input)
     return output;
 }
 
-JS::NonnullGCPtr<URLSearchParams> URLSearchParams::create(HTML::Window& window, Vector<QueryParam> list)
+JS::NonnullGCPtr<URLSearchParams> URLSearchParams::create(JS::Realm& realm, Vector<QueryParam> list)
 {
-    return *window.heap().allocate<URLSearchParams>(window.realm(), window, move(list));
+    return *realm.heap().allocate<URLSearchParams>(realm, realm, move(list));
 }
 
 // https://url.spec.whatwg.org/#dom-urlsearchparams-urlsearchparams
 // https://url.spec.whatwg.org/#urlsearchparams-initialize
-WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> URLSearchParams::create_with_global_object(HTML::Window& window, Variant<Vector<Vector<String>>, OrderedHashMap<String, String>, String> const& init)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> URLSearchParams::construct_impl(JS::Realm& realm, Variant<Vector<Vector<String>>, OrderedHashMap<String, String>, String> const& init)
 {
     // 1. If init is a string and starts with U+003F (?), then remove the first code point from init.
     // NOTE: We do this when we know that it's a string on step 3 of initialization.
@@ -114,7 +114,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> URLSearchParams::create_w
             list.append(QueryParam { .name = pair[0], .value = pair[1] });
         }
 
-        return URLSearchParams::create(window, move(list));
+        return URLSearchParams::create(realm, move(list));
     }
 
     // 2. Otherwise, if init is a record, then for each name → value of init, append a new name-value pair whose name is name and value is value, to query’s list.
@@ -127,7 +127,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> URLSearchParams::create_w
         for (auto const& pair : init_record)
             list.append(QueryParam { .name = pair.key, .value = pair.value });
 
-        return URLSearchParams::create(window, move(list));
+        return URLSearchParams::create(realm, move(list));
     }
 
     // 3. Otherwise:
@@ -139,7 +139,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> URLSearchParams::create_w
     StringView stripped_init = init_string.substring_view(init_string.starts_with('?'));
 
     // b. Set query’s list to the result of parsing init.
-    return URLSearchParams::create(window, url_decode(stripped_init));
+    return URLSearchParams::create(realm, url_decode(stripped_init));
 }
 
 void URLSearchParams::append(String const& name, String const& value)
diff --git a/Userland/Libraries/LibWeb/URL/URLSearchParams.h b/Userland/Libraries/LibWeb/URL/URLSearchParams.h
index 97413dcb6b..38e9331c44 100644
--- a/Userland/Libraries/LibWeb/URL/URLSearchParams.h
+++ b/Userland/Libraries/LibWeb/URL/URLSearchParams.h
@@ -23,8 +23,8 @@ class URLSearchParams : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(URLSearchParams, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<URLSearchParams> create(HTML::Window&, Vector<QueryParam> list);
-    static WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> create_with_global_object(HTML::Window&, Variant<Vector<Vector<String>>, OrderedHashMap<String, String>, String> const& init);
+    static JS::NonnullGCPtr<URLSearchParams> create(JS::Realm&, Vector<QueryParam> list);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> construct_impl(JS::Realm&, Variant<Vector<Vector<String>>, OrderedHashMap<String, String>, String> const& init);
 
     virtual ~URLSearchParams() override;
 
@@ -46,7 +46,7 @@ private:
     friend class URL;
     friend class URLSearchParamsIterator;
 
-    URLSearchParams(HTML::Window&, Vector<QueryParam> list);
+    URLSearchParams(JS::Realm&, Vector<QueryParam> list);
 
     virtual void visit_edges(Cell::Visitor&) override;
 
diff --git a/Userland/Libraries/LibWeb/URL/URLSearchParamsIterator.cpp b/Userland/Libraries/LibWeb/URL/URLSearchParamsIterator.cpp
index e70a40f946..9d1cb1a3da 100644
--- a/Userland/Libraries/LibWeb/URL/URLSearchParamsIterator.cpp
+++ b/Userland/Libraries/LibWeb/URL/URLSearchParamsIterator.cpp
@@ -6,8 +6,8 @@
 
 #include <LibJS/Runtime/Array.h>
 #include <LibJS/Runtime/IteratorOperations.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Bindings/URLSearchParamsIteratorPrototype.h>
-#include <LibWeb/HTML/Window.h>
 #include <LibWeb/URL/URLSearchParamsIterator.h>
 
 namespace Web::URL {
@@ -22,7 +22,7 @@ URLSearchParamsIterator::URLSearchParamsIterator(URLSearchParams const& url_sear
     , m_url_search_params(url_search_params)
     , m_iteration_kind(iteration_kind)
 {
-    set_prototype(&url_search_params.global_object().ensure_web_prototype<Bindings::URLSearchParamsIteratorPrototype>("URLSearchParamsIterator"));
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::URLSearchParamsIteratorPrototype>(url_search_params.realm(), "URLSearchParamsIterator"));
 }
 
 URLSearchParamsIterator::~URLSearchParamsIterator() = default;
diff --git a/Userland/Libraries/LibWeb/XML/XMLDocumentBuilder.cpp b/Userland/Libraries/LibWeb/XML/XMLDocumentBuilder.cpp
index d23574b212..64105d6b23 100644
--- a/Userland/Libraries/LibWeb/XML/XMLDocumentBuilder.cpp
+++ b/Userland/Libraries/LibWeb/XML/XMLDocumentBuilder.cpp
@@ -177,7 +177,7 @@ void XMLDocumentBuilder::document_end()
         document->load_timing_info().dom_content_loaded_event_start_time = HTML::main_thread_event_loop().unsafe_shared_current_time();
 
         // Fire an event named DOMContentLoaded at the Document object, with its bubbles attribute initialized to true.
-        auto content_loaded_event = DOM::Event::create(document->window(), HTML::EventNames::DOMContentLoaded);
+        auto content_loaded_event = DOM::Event::create(document->realm(), HTML::EventNames::DOMContentLoaded);
         content_loaded_event->set_bubbles(true);
         document->dispatch_event(*content_loaded_event);
 
@@ -209,7 +209,7 @@ void XMLDocumentBuilder::document_end()
             return;
 
         // Let window be the Document's relevant global object.
-        JS::NonnullGCPtr<HTML::Window> window = document->window();
+        JS::NonnullGCPtr<HTML::Window> window = verify_cast<HTML::Window>(relevant_global_object(*document));
 
         // Set the Document's load timing info's load event start time to the current high resolution time given window.
         document->load_timing_info().load_event_start_time = HTML::main_thread_event_loop().unsafe_shared_current_time();
@@ -217,7 +217,7 @@ void XMLDocumentBuilder::document_end()
         // Fire an event named load at window, with legacy target override flag set.
         // FIXME: The legacy target override flag is currently set by a virtual override of dispatch_event()
         // We should reorganize this so that the flag appears explicitly here instead.
-        window->dispatch_event(*DOM::Event::create(document->window(), HTML::EventNames::load));
+        window->dispatch_event(*DOM::Event::create(document->realm(), HTML::EventNames::load));
 
         // FIXME: Invoke WebDriver BiDi load complete with the Document's browsing context, and a new WebDriver BiDi navigation status whose id is the Document object's navigation id, status is "complete", and url is the Document object's URL.