diff --git a/Userland/Libraries/LibGUI/CommonLocationsProvider.h b/Userland/Libraries/LibGUI/CommonLocationsProvider.h
index b5d3faff591..813439195dc 100644
--- a/Userland/Libraries/LibGUI/CommonLocationsProvider.h
+++ b/Userland/Libraries/LibGUI/CommonLocationsProvider.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <AK/Forward.h>
+#include <AK/String.h>
 #include <LibGUI/Forward.h>
 #include <sys/types.h>
 
diff --git a/Userland/Libraries/LibGUI/Forward.h b/Userland/Libraries/LibGUI/Forward.h
index ac629e035f9..34a050eab6d 100644
--- a/Userland/Libraries/LibGUI/Forward.h
+++ b/Userland/Libraries/LibGUI/Forward.h
@@ -67,6 +67,7 @@ class Statusbar;
 class TabWidget;
 class TableView;
 class TextBox;
+class TextPosition;
 class UrlBox;
 class TextDocument;
 class TextDocumentLine;
diff --git a/Userland/Libraries/LibGUI/MenuItem.h b/Userland/Libraries/LibGUI/MenuItem.h
index 6a95dbefe96..b67cab9f5c8 100644
--- a/Userland/Libraries/LibGUI/MenuItem.h
+++ b/Userland/Libraries/LibGUI/MenuItem.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <AK/Badge.h>
 #include <AK/Forward.h>
 #include <AK/RefPtr.h>
 #include <LibGUI/Forward.h>
diff --git a/Userland/Libraries/LibGfx/FontStyleMapping.h b/Userland/Libraries/LibGfx/FontStyleMapping.h
index bbff6115d8f..7c499c35b93 100644
--- a/Userland/Libraries/LibGfx/FontStyleMapping.h
+++ b/Userland/Libraries/LibGfx/FontStyleMapping.h
@@ -7,6 +7,8 @@
 
 #pragma once
 
+#include <AK/StringView.h>
+
 namespace Gfx {
 
 struct FontStyleMapping {
diff --git a/Userland/Libraries/LibGfx/Line.h b/Userland/Libraries/LibGfx/Line.h
index d5f8360b040..327644a51fb 100644
--- a/Userland/Libraries/LibGfx/Line.h
+++ b/Userland/Libraries/LibGfx/Line.h
@@ -8,6 +8,7 @@
 
 #include <AK/Optional.h>
 #include <AK/StdLibExtras.h>
+#include <AK/String.h>
 #include <LibGfx/Forward.h>
 #include <LibGfx/Point.h>
 #include <LibGfx/Rect.h>
diff --git a/Userland/Libraries/LibGfx/StylePainter.h b/Userland/Libraries/LibGfx/StylePainter.h
index f8b24362dba..67381790316 100644
--- a/Userland/Libraries/LibGfx/StylePainter.h
+++ b/Userland/Libraries/LibGfx/StylePainter.h
@@ -8,6 +8,7 @@
 
 #include <AK/Forward.h>
 #include <LibGfx/Forward.h>
+#include <LibGfx/Orientation.h>
 
 namespace Gfx {
 
diff --git a/Userland/Libraries/LibGfx/TextDirection.h b/Userland/Libraries/LibGfx/TextDirection.h
index c128d38d03f..dc5ef5b184a 100644
--- a/Userland/Libraries/LibGfx/TextDirection.h
+++ b/Userland/Libraries/LibGfx/TextDirection.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <AK/Array.h>
 #include <AK/Utf32View.h>
 #include <AK/Vector.h>
 
diff --git a/Userland/Libraries/LibGfx/TrueTypeFont/Tables.h b/Userland/Libraries/LibGfx/TrueTypeFont/Tables.h
index f60b83a5ff8..8eeaa81dc8f 100644
--- a/Userland/Libraries/LibGfx/TrueTypeFont/Tables.h
+++ b/Userland/Libraries/LibGfx/TrueTypeFont/Tables.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <AK/Span.h>
+#include <AK/String.h>
 
 namespace TTF {