diff --git a/Libraries/LibWeb/HTML/Navigable.cpp b/Libraries/LibWeb/HTML/Navigable.cpp
index d9cb76abe93..e02622d08be 100644
--- a/Libraries/LibWeb/HTML/Navigable.cpp
+++ b/Libraries/LibWeb/HTML/Navigable.cpp
@@ -2576,7 +2576,7 @@ void Navigable::select_all()
     }
 }
 
-void Navigable::paste(String const& text)
+void Navigable::paste(Utf16String const& text)
 {
     auto document = active_document();
     if (!document)
diff --git a/Libraries/LibWeb/HTML/Navigable.h b/Libraries/LibWeb/HTML/Navigable.h
index 1277a603dfa..6e95d1954cd 100644
--- a/Libraries/LibWeb/HTML/Navigable.h
+++ b/Libraries/LibWeb/HTML/Navigable.h
@@ -196,7 +196,7 @@ public:
 
     String selected_text() const;
     void select_all();
-    void paste(String const&);
+    void paste(Utf16String const&);
 
     Web::EventHandler& event_handler() { return m_event_handler; }
     Web::EventHandler const& event_handler() const { return m_event_handler; }
diff --git a/Libraries/LibWeb/Internals/Internals.cpp b/Libraries/LibWeb/Internals/Internals.cpp
index aa659e38d8a..91f17b78882 100644
--- a/Libraries/LibWeb/Internals/Internals.cpp
+++ b/Libraries/LibWeb/Internals/Internals.cpp
@@ -156,7 +156,7 @@ void Internals::send_key(HTML::HTMLElement& target, String const& key_name, WebI
     page().handle_keydown(key_code, modifiers, 0, false);
 }
 
-void Internals::paste(HTML::HTMLElement& target, String const& text)
+void Internals::paste(HTML::HTMLElement& target, Utf16String const& text)
 {
     auto& page = this->page();
     target.focus();
diff --git a/Libraries/LibWeb/Internals/Internals.h b/Libraries/LibWeb/Internals/Internals.h
index e5769a8a001..c26b55f7b9d 100644
--- a/Libraries/LibWeb/Internals/Internals.h
+++ b/Libraries/LibWeb/Internals/Internals.h
@@ -32,7 +32,7 @@ public:
 
     void send_text(HTML::HTMLElement&, String const&, WebIDL::UnsignedShort modifiers);
     void send_key(HTML::HTMLElement&, String const&, WebIDL::UnsignedShort modifiers);
-    void paste(HTML::HTMLElement& target, String const& text);
+    void paste(HTML::HTMLElement& target, Utf16String const& text);
     void commit_text();
 
     void click(double x, double y);
diff --git a/Libraries/LibWeb/Internals/Internals.idl b/Libraries/LibWeb/Internals/Internals.idl
index 8134dcfa60d..c4cb1017741 100644
--- a/Libraries/LibWeb/Internals/Internals.idl
+++ b/Libraries/LibWeb/Internals/Internals.idl
@@ -24,7 +24,7 @@ interface Internals {
 
     undefined sendText(HTMLElement target, DOMString text, optional unsigned short modifiers = 0);
     undefined sendKey(HTMLElement target, DOMString keyName, optional unsigned short modifiers = 0);
-    undefined paste(HTMLElement target, DOMString text);
+    undefined paste(HTMLElement target, Utf16DOMString text);
     undefined commitText();
 
     undefined click(double x, double y);
diff --git a/Libraries/LibWeb/Page/EventHandler.cpp b/Libraries/LibWeb/Page/EventHandler.cpp
index 6331b10078d..ccbaeb88122 100644
--- a/Libraries/LibWeb/Page/EventHandler.cpp
+++ b/Libraries/LibWeb/Page/EventHandler.cpp
@@ -1445,7 +1445,7 @@ EventResult EventHandler::handle_keyup(UIEvents::KeyCode key, u32 modifiers, u32
     return fire_keyboard_event(UIEvents::EventNames::keyup, m_navigable, key, modifiers, code_point, false);
 }
 
-EventResult EventHandler::handle_paste(String const& text)
+EventResult EventHandler::handle_paste(Utf16String const& text)
 {
     auto active_document = m_navigable->active_document();
     if (!active_document)
@@ -1457,10 +1457,9 @@ EventResult EventHandler::handle_paste(String const& text)
     if (!target)
         return EventResult::Dropped;
 
-    auto utf16_string = Utf16String::from_utf8(text);
+    FIRE(input_event(UIEvents::EventNames::beforeinput, UIEvents::InputTypes::insertFromPaste, m_navigable, text));
+    target->handle_insert(text);
 
-    FIRE(input_event(UIEvents::EventNames::beforeinput, UIEvents::InputTypes::insertFromPaste, m_navigable, utf16_string));
-    target->handle_insert(utf16_string);
     return EventResult::Handled;
 }
 
diff --git a/Libraries/LibWeb/Page/EventHandler.h b/Libraries/LibWeb/Page/EventHandler.h
index 508b3aab12e..0fe3d9bf83c 100644
--- a/Libraries/LibWeb/Page/EventHandler.h
+++ b/Libraries/LibWeb/Page/EventHandler.h
@@ -42,7 +42,7 @@ public:
 
     void set_mouse_event_tracking_paintable(GC::Ptr<Painting::Paintable>);
 
-    EventResult handle_paste(String const& text);
+    EventResult handle_paste(Utf16String const& text);
 
     void handle_sdl_input_events();
 
diff --git a/Libraries/LibWebView/Application.h b/Libraries/LibWebView/Application.h
index a2f4809b805..34185cbb11f 100644
--- a/Libraries/LibWebView/Application.h
+++ b/Libraries/LibWebView/Application.h
@@ -76,7 +76,7 @@ public:
     virtual void display_download_confirmation_dialog(StringView download_name, LexicalPath const& path) const;
     virtual void display_error_dialog(StringView error_message) const;
 
-    virtual String clipboard_text() const { return {}; }
+    virtual Utf16String clipboard_text() const { return {}; }
     virtual Vector<Web::Clipboard::SystemClipboardRepresentation> clipboard_entries() const { return {}; }
     virtual void insert_clipboard_entry(Web::Clipboard::SystemClipboardRepresentation) { }
 
diff --git a/Services/WebContent/ConnectionFromClient.cpp b/Services/WebContent/ConnectionFromClient.cpp
index 3b5c4e0a114..6c6f4591cd8 100644
--- a/Services/WebContent/ConnectionFromClient.cpp
+++ b/Services/WebContent/ConnectionFromClient.cpp
@@ -1076,7 +1076,7 @@ void ConnectionFromClient::find_in_page_previous_match(u64 page_id)
     async_did_find_in_page(page_id, result.current_match_index, result.total_match_count);
 }
 
-void ConnectionFromClient::paste(u64 page_id, String text)
+void ConnectionFromClient::paste(u64 page_id, Utf16String text)
 {
     if (auto page = this->page(page_id); page.has_value())
         page->page().focused_navigable().paste(text);
diff --git a/Services/WebContent/ConnectionFromClient.h b/Services/WebContent/ConnectionFromClient.h
index 91f524a173d..dd8357ddeb6 100644
--- a/Services/WebContent/ConnectionFromClient.h
+++ b/Services/WebContent/ConnectionFromClient.h
@@ -155,7 +155,7 @@ private:
     virtual void find_in_page_next_match(u64 page_id) override;
     virtual void find_in_page_previous_match(u64 page_id) override;
 
-    virtual void paste(u64 page_id, String text) override;
+    virtual void paste(u64 page_id, Utf16String text) override;
 
     virtual void system_time_zone_changed() override;
     virtual void cookies_changed(Vector<Web::Cookie::Cookie>) override;
diff --git a/Services/WebContent/WebContentServer.ipc b/Services/WebContent/WebContentServer.ipc
index a1404b609dd..f5cf45e7efe 100644
--- a/Services/WebContent/WebContentServer.ipc
+++ b/Services/WebContent/WebContentServer.ipc
@@ -82,7 +82,7 @@ endpoint WebContentServer
 
     get_selected_text(u64 page_id) => (ByteString selection)
     select_all(u64 page_id) =|
-    paste(u64 page_id, String text) =|
+    paste(u64 page_id, Utf16String text) =|
 
     find_in_page(u64 page_id, String query, AK::CaseSensitivity case_sensitivity) =|
     find_in_page_next_match(u64 page_id) =|
diff --git a/UI/AppKit/Application/Application.h b/UI/AppKit/Application/Application.h
index 94fcaee878a..7d42b6c8747 100644
--- a/UI/AppKit/Application/Application.h
+++ b/UI/AppKit/Application/Application.h
@@ -27,7 +27,7 @@ private:
     virtual void display_download_confirmation_dialog(StringView download_name, LexicalPath const& path) const override;
     virtual void display_error_dialog(StringView error_message) const override;
 
-    virtual String clipboard_text() const override;
+    virtual Utf16String clipboard_text() const override;
     virtual Vector<Web::Clipboard::SystemClipboardRepresentation> clipboard_entries() const override;
     virtual void insert_clipboard_entry(Web::Clipboard::SystemClipboardRepresentation) override;
 
diff --git a/UI/AppKit/Application/Application.mm b/UI/AppKit/Application/Application.mm
index 7935155d0be..353e8d95f2b 100644
--- a/UI/AppKit/Application/Application.mm
+++ b/UI/AppKit/Application/Application.mm
@@ -98,12 +98,12 @@ void Application::display_error_dialog(StringView error_message) const
                    completionHandler:nil];
 }
 
-String Application::clipboard_text() const
+Utf16String Application::clipboard_text() const
 {
     auto* paste_board = [NSPasteboard generalPasteboard];
 
     if (auto* contents = [paste_board stringForType:NSPasteboardTypeString])
-        return Ladybird::ns_string_to_string(contents);
+        return Ladybird::ns_string_to_utf16_string(contents);
     return {};
 }
 
diff --git a/UI/Qt/Application.cpp b/UI/Qt/Application.cpp
index 74e137c5570..0cf39f4fb36 100644
--- a/UI/Qt/Application.cpp
+++ b/UI/Qt/Application.cpp
@@ -136,10 +136,10 @@ void Application::display_error_dialog(StringView error_message) const
     QMessageBox::warning(active_tab(), "Ladybird", qstring_from_ak_string(error_message));
 }
 
-String Application::clipboard_text() const
+Utf16String Application::clipboard_text() const
 {
     auto const* clipboard = QGuiApplication::clipboard();
-    return ak_string_from_qstring(clipboard->text());
+    return utf16_string_from_qstring(clipboard->text());
 }
 
 Vector<Web::Clipboard::SystemClipboardRepresentation> Application::clipboard_entries() const
diff --git a/UI/Qt/Application.h b/UI/Qt/Application.h
index 895bad0b7e5..6ccd150b9f6 100644
--- a/UI/Qt/Application.h
+++ b/UI/Qt/Application.h
@@ -43,7 +43,7 @@ private:
     virtual void display_download_confirmation_dialog(StringView download_name, LexicalPath const& path) const override;
     virtual void display_error_dialog(StringView error_message) const override;
 
-    virtual String clipboard_text() const override;
+    virtual Utf16String clipboard_text() const override;
     virtual Vector<Web::Clipboard::SystemClipboardRepresentation> clipboard_entries() const override;
     virtual void insert_clipboard_entry(Web::Clipboard::SystemClipboardRepresentation) override;