diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index fe96024545..f60e97d754 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -48,6 +48,7 @@ set(SOURCES
     DOM/DOMImplementation.cpp
     DOM/Document.cpp
     DOM/DocumentFragment.cpp
+    DOM/DocumentLoadEventDelayer.cpp
     DOM/DocumentType.cpp
     DOM/Element.cpp
     DOM/ElementFactory.cpp
diff --git a/Userland/Libraries/LibWeb/DOM/Document.h b/Userland/Libraries/LibWeb/DOM/Document.h
index 4b9573c569..83977757d8 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.h
+++ b/Userland/Libraries/LibWeb/DOM/Document.h
@@ -285,6 +285,14 @@ public:
 
     Bindings::LocationObject* location();
 
+    size_t number_of_things_delaying_the_load_event() { return m_number_of_things_delaying_the_load_event; }
+    void increment_number_of_things_delaying_the_load_event(Badge<DocumentLoadEventDelayer>) { ++m_number_of_things_delaying_the_load_event; }
+    void decrement_number_of_things_delaying_the_load_event(Badge<DocumentLoadEventDelayer>)
+    {
+        VERIFY(m_number_of_things_delaying_the_load_event);
+        --m_number_of_things_delaying_the_load_event;
+    }
+
 private:
     explicit Document(const AK::URL&);
 
@@ -367,6 +375,8 @@ private:
     u32 m_script_blocking_style_sheet_counter { 0 };
 
     NonnullRefPtr<HTML::History> m_history;
+
+    size_t m_number_of_things_delaying_the_load_event { 0 };
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/DOM/DocumentLoadEventDelayer.cpp b/Userland/Libraries/LibWeb/DOM/DocumentLoadEventDelayer.cpp
new file mode 100644
index 0000000000..60043ea00c
--- /dev/null
+++ b/Userland/Libraries/LibWeb/DOM/DocumentLoadEventDelayer.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/DOM/Document.h>
+#include <LibWeb/DOM/DocumentLoadEventDelayer.h>
+
+namespace Web::DOM {
+
+DocumentLoadEventDelayer::DocumentLoadEventDelayer(Document& document)
+    : m_document(document)
+{
+    m_document->increment_number_of_things_delaying_the_load_event({});
+}
+
+DocumentLoadEventDelayer::~DocumentLoadEventDelayer()
+{
+    m_document->decrement_number_of_things_delaying_the_load_event({});
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/DOM/DocumentLoadEventDelayer.h b/Userland/Libraries/LibWeb/DOM/DocumentLoadEventDelayer.h
new file mode 100644
index 0000000000..ac8a17294f
--- /dev/null
+++ b/Userland/Libraries/LibWeb/DOM/DocumentLoadEventDelayer.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Noncopyable.h>
+#include <AK/NonnullRefPtr.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::DOM {
+
+class DocumentLoadEventDelayer {
+    AK_MAKE_NONMOVABLE(DocumentLoadEventDelayer);
+    AK_MAKE_NONCOPYABLE(DocumentLoadEventDelayer);
+
+public:
+    explicit DocumentLoadEventDelayer(Document&);
+    ~DocumentLoadEventDelayer();
+
+private:
+    NonnullRefPtr<Document> m_document;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index f8c3a2d750..bae3610e66 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -64,6 +64,7 @@ class CharacterData;
 class Comment;
 class Document;
 class DocumentFragment;
+class DocumentLoadEventDelayer;
 class DocumentType;
 class DOMException;
 class DOMImplementation;
diff --git a/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp b/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
index c3d222d851..74508b327a 100644
--- a/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
@@ -231,7 +231,11 @@ void HTMLParser::the_end()
         return m_document->scripts_to_execute_as_soon_as_possible().is_empty();
     });
 
-    // FIXME: 8. Spin the event loop until there is nothing that delays the load event in the Document.
+    // 8. Spin the event loop until there is nothing that delays the load event in the Document.
+    // FIXME: Track down all the things that are supposed to delay the load event.
+    main_thread_event_loop().spin_until([&] {
+        return m_document->number_of_things_delaying_the_load_event() == 0;
+    });
 
     // 9. Queue a global task on the DOM manipulation task source given the Document's relevant global object to run the following steps:
     queue_global_task(HTML::Task::Source::DOMManipulation, *m_document, [document = m_document]() mutable {