diff --git a/Libraries/LibWebView/InspectorClient.cpp b/Libraries/LibWebView/InspectorClient.cpp
index 75f8baf94e9..5379fb8918d 100644
--- a/Libraries/LibWebView/InspectorClient.cpp
+++ b/Libraries/LibWebView/InspectorClient.cpp
@@ -71,7 +71,7 @@ InspectorClient::InspectorClient(ViewImplementation& content_web_view, ViewImple
         builder.append_escaped_for_json(properties.fonts.serialized());
         builder.append("\");"sv);
 
-        m_inspector_web_view.run_javascript(builder.string_view());
+        m_inspector_web_view.run_javascript(MUST(builder.to_string()));
     };
 
     m_content_web_view.on_received_accessibility_tree = [this](auto const& accessibility_tree) {
@@ -94,7 +94,7 @@ InspectorClient::InspectorClient(ViewImplementation& content_web_view, ViewImple
         }
         builder.append("]);"sv);
 
-        m_inspector_web_view.run_javascript(builder.string_view());
+        m_inspector_web_view.run_javascript(MUST(builder.to_string()));
     };
 
     m_content_web_view.on_received_style_sheet_source = [this](Web::CSS::StyleSheetIdentifier const& identifier, auto const& base_url, String const& source) {
@@ -199,7 +199,7 @@ InspectorClient::InspectorClient(ViewImplementation& content_web_view, ViewImple
     m_inspector_web_view.on_inspector_executed_console_script = [this](auto const& script) {
         append_console_source(script);
 
-        m_content_web_view.js_console_input(script.to_byte_string());
+        m_content_web_view.js_console_input(script);
     };
 
     m_inspector_web_view.on_inspector_exported_inspector_html = [this](String const& html) {
@@ -280,7 +280,7 @@ void InspectorClient::inspect()
 
 void InspectorClient::reset()
 {
-    static constexpr auto script = "inspector.reset();"sv;
+    static auto script = "inspector.reset();"_string;
     m_inspector_web_view.run_javascript(script);
 
     m_body_or_frameset_node_id.clear();
@@ -310,7 +310,7 @@ void InspectorClient::clear_selection()
     m_content_web_view.clear_highlighted_dom_node();
     m_content_web_view.clear_inspected_dom_node();
 
-    static constexpr auto script = "inspector.clearInspectedDOMNode();"sv;
+    static auto script = "inspector.clearInspectedDOMNode();"_string;
     m_inspector_web_view.run_javascript(script);
 }
 
@@ -350,7 +350,7 @@ void InspectorClient::load_cookies()
     json_cookies.serialize(builder);
     builder.append(");"sv);
 
-    m_inspector_web_view.run_javascript(builder.string_view());
+    m_inspector_web_view.run_javascript(MUST(builder.to_string()));
 }
 
 void InspectorClient::context_menu_edit_dom_node()
@@ -717,7 +717,7 @@ void InspectorClient::handle_console_message(i32 message_index)
         request_console_messages();
 }
 
-void InspectorClient::handle_console_messages(i32 start_index, ReadonlySpan<ByteString> message_types, ReadonlySpan<ByteString> messages)
+void InspectorClient::handle_console_messages(i32 start_index, ReadonlySpan<String> message_types, ReadonlySpan<String> messages)
 {
     auto end_index = start_index + static_cast<i32>(message_types.size()) - 1;
     if (end_index <= m_highest_received_message_index) {
@@ -787,7 +787,7 @@ void InspectorClient::append_console_output(StringView html)
 
 void InspectorClient::clear_console_output()
 {
-    static constexpr auto script = "inspector.clearConsoleOutput();"sv;
+    static auto script = "inspector.clearConsoleOutput();"_string;
     m_inspector_web_view.run_javascript(script);
 }
 
@@ -801,7 +801,7 @@ void InspectorClient::begin_console_group(StringView label, bool start_expanded)
 
 void InspectorClient::end_console_group()
 {
-    static constexpr auto script = "inspector.endConsoleGroup();"sv;
+    static auto script = "inspector.endConsoleGroup();"_string;
     m_inspector_web_view.run_javascript(script);
 }
 
diff --git a/Libraries/LibWebView/InspectorClient.h b/Libraries/LibWebView/InspectorClient.h
index 09514d83c4a..4e28548eda2 100644
--- a/Libraries/LibWebView/InspectorClient.h
+++ b/Libraries/LibWebView/InspectorClient.h
@@ -58,7 +58,7 @@ private:
 
     void request_console_messages();
     void handle_console_message(i32 message_index);
-    void handle_console_messages(i32 start_index, ReadonlySpan<ByteString> message_types, ReadonlySpan<ByteString> messages);
+    void handle_console_messages(i32 start_index, ReadonlySpan<String> message_types, ReadonlySpan<String> messages);
 
     void append_console_source(StringView);
     void append_console_message(StringView);
diff --git a/Libraries/LibWebView/ViewImplementation.cpp b/Libraries/LibWebView/ViewImplementation.cpp
index 122f6dcea71..1e35e675cef 100644
--- a/Libraries/LibWebView/ViewImplementation.cpp
+++ b/Libraries/LibWebView/ViewImplementation.cpp
@@ -393,14 +393,14 @@ void ViewImplementation::debug_request(ByteString const& request, ByteString con
     client().async_debug_request(page_id(), request, argument);
 }
 
-void ViewImplementation::run_javascript(StringView js_source)
+void ViewImplementation::run_javascript(String js_source)
 {
-    client().async_run_javascript(page_id(), js_source);
+    client().async_run_javascript(page_id(), move(js_source));
 }
 
-void ViewImplementation::js_console_input(ByteString const& js_source)
+void ViewImplementation::js_console_input(String js_source)
 {
-    client().async_js_console_input(page_id(), js_source);
+    client().async_js_console_input(page_id(), move(js_source));
 }
 
 void ViewImplementation::js_console_request_messages(i32 start_index)
diff --git a/Libraries/LibWebView/ViewImplementation.h b/Libraries/LibWebView/ViewImplementation.h
index f87f8b9476c..1f1ee94724a 100644
--- a/Libraries/LibWebView/ViewImplementation.h
+++ b/Libraries/LibWebView/ViewImplementation.h
@@ -127,8 +127,8 @@ public:
 
     void debug_request(ByteString const& request, ByteString const& argument = {});
 
-    void run_javascript(StringView);
-    void js_console_input(ByteString const& js_source);
+    void run_javascript(String);
+    void js_console_input(String);
     void js_console_request_messages(i32 start_index);
 
     void alert_closed();
@@ -216,7 +216,7 @@ public:
     Function<void(Optional<Web::UniqueNodeID> const& node_id)> on_finshed_editing_dom_node;
     Function<void(String const&)> on_received_dom_node_html;
     Function<void(i32 message_id)> on_received_console_message;
-    Function<void(i32 start_index, Vector<ByteString> const& message_types, Vector<ByteString> const& messages)> on_received_console_messages;
+    Function<void(i32 start_index, Vector<String> const& message_types, Vector<String> const& messages)> on_received_console_messages;
     Function<void(i32 count_waiting)> on_resource_status_change;
     Function<void()> on_restore_window;
     Function<void(Gfx::IntPoint)> on_reposition_window;
diff --git a/Libraries/LibWebView/WebContentClient.cpp b/Libraries/LibWebView/WebContentClient.cpp
index efa09cd418d..4bef200e246 100644
--- a/Libraries/LibWebView/WebContentClient.cpp
+++ b/Libraries/LibWebView/WebContentClient.cpp
@@ -374,7 +374,7 @@ void WebContentClient::did_output_js_console_message(u64 page_id, i32 message_in
     }
 }
 
-void WebContentClient::did_get_js_console_messages(u64 page_id, i32 start_index, Vector<ByteString> const& message_types, Vector<ByteString> const& messages)
+void WebContentClient::did_get_js_console_messages(u64 page_id, i32 start_index, Vector<String> const& message_types, Vector<String> const& messages)
 {
     if (auto view = view_for_page_id(page_id); view.has_value()) {
         if (view->on_received_console_messages)
diff --git a/Libraries/LibWebView/WebContentClient.h b/Libraries/LibWebView/WebContentClient.h
index d7fb9d00e23..e8971d02ec3 100644
--- a/Libraries/LibWebView/WebContentClient.h
+++ b/Libraries/LibWebView/WebContentClient.h
@@ -80,7 +80,7 @@ private:
     virtual void did_take_screenshot(u64 page_id, Gfx::ShareableBitmap const& screenshot) override;
     virtual void did_get_internal_page_info(u64 page_id, PageInfoType, String const&) override;
     virtual void did_output_js_console_message(u64 page_id, i32 message_index) override;
-    virtual void did_get_js_console_messages(u64 page_id, i32 start_index, Vector<ByteString> const& message_types, Vector<ByteString> const& messages) override;
+    virtual void did_get_js_console_messages(u64 page_id, i32 start_index, Vector<String> const& message_types, Vector<String> const& messages) override;
     virtual void did_change_favicon(u64 page_id, Gfx::ShareableBitmap const&) override;
     virtual void did_request_alert(u64 page_id, String const&) override;
     virtual void did_request_confirm(u64 page_id, String const&) override;
diff --git a/Services/WebContent/ConnectionFromClient.cpp b/Services/WebContent/ConnectionFromClient.cpp
index d06a97fdb15..9c8db9a5b93 100644
--- a/Services/WebContent/ConnectionFromClient.cpp
+++ b/Services/WebContent/ConnectionFromClient.cpp
@@ -1150,7 +1150,7 @@ void ConnectionFromClient::set_system_visibility_state(u64 page_id, Web::HTML::V
         page->page().top_level_traversable()->set_system_visibility_state(visibility_state);
 }
 
-void ConnectionFromClient::js_console_input(u64 page_id, ByteString const& js_source)
+void ConnectionFromClient::js_console_input(u64 page_id, String const& js_source)
 {
     auto page = this->page(page_id);
     if (!page.has_value())
@@ -1159,7 +1159,7 @@ void ConnectionFromClient::js_console_input(u64 page_id, ByteString const& js_so
     page->js_console_input(js_source);
 }
 
-void ConnectionFromClient::run_javascript(u64 page_id, ByteString const& js_source)
+void ConnectionFromClient::run_javascript(u64 page_id, String const& js_source)
 {
     if (auto page = this->page(page_id); page.has_value())
         page->run_javascript(js_source);
diff --git a/Services/WebContent/ConnectionFromClient.h b/Services/WebContent/ConnectionFromClient.h
index 61640740f1f..c7be6e9c733 100644
--- a/Services/WebContent/ConnectionFromClient.h
+++ b/Services/WebContent/ConnectionFromClient.h
@@ -111,8 +111,8 @@ private:
     virtual void handle_file_return(u64 page_id, i32 error, Optional<IPC::File> const& file, i32 request_id) override;
     virtual void set_system_visibility_state(u64 page_id, Web::HTML::VisibilityState) override;
 
-    virtual void js_console_input(u64 page_id, ByteString const&) override;
-    virtual void run_javascript(u64 page_id, ByteString const&) override;
+    virtual void js_console_input(u64 page_id, String const&) override;
+    virtual void run_javascript(u64 page_id, String const&) override;
     virtual void js_console_request_messages(u64 page_id, i32) override;
 
     virtual void alert_closed(u64 page_id) override;
diff --git a/Services/WebContent/PageClient.cpp b/Services/WebContent/PageClient.cpp
index fcc0f7c34fc..3d85231880b 100644
--- a/Services/WebContent/PageClient.cpp
+++ b/Services/WebContent/PageClient.cpp
@@ -738,13 +738,13 @@ void PageClient::initialize_js_console(Web::DOM::Document& document)
     document.set_console_client(console_client);
 }
 
-void PageClient::js_console_input(ByteString const& js_source)
+void PageClient::js_console_input(StringView js_source)
 {
     if (m_top_level_document_console_client)
         m_top_level_document_console_client->handle_input(js_source);
 }
 
-void PageClient::run_javascript(ByteString const& js_source)
+void PageClient::run_javascript(StringView js_source)
 {
     auto* active_document = page().top_level_browsing_context().active_document();
 
@@ -787,7 +787,7 @@ void PageClient::console_peer_did_misbehave(char const* reason)
     client().did_misbehave(reason);
 }
 
-void PageClient::did_get_js_console_messages(i32 start_index, Vector<ByteString> message_types, Vector<ByteString> messages)
+void PageClient::did_get_js_console_messages(i32 start_index, Vector<String> message_types, Vector<String> messages)
 {
     client().async_did_get_js_console_messages(m_id, start_index, move(message_types), move(messages));
 }
diff --git a/Services/WebContent/PageClient.h b/Services/WebContent/PageClient.h
index b190dd3d625..09cd69e8b2e 100644
--- a/Services/WebContent/PageClient.h
+++ b/Services/WebContent/PageClient.h
@@ -82,12 +82,12 @@ public:
     void ready_to_paint();
 
     void initialize_js_console(Web::DOM::Document& document);
-    void js_console_input(ByteString const& js_source);
-    void run_javascript(ByteString const& js_source);
+    void js_console_input(StringView js_source);
+    void run_javascript(StringView js_source);
     void js_console_request_messages(i32 start_index);
     void did_output_js_console_message(i32 message_index);
     void console_peer_did_misbehave(char const* reason);
-    void did_get_js_console_messages(i32 start_index, Vector<ByteString> message_types, Vector<ByteString> messages);
+    void did_get_js_console_messages(i32 start_index, Vector<String> message_types, Vector<String> messages);
 
     Vector<Web::CSS::StyleSheetIdentifier> list_style_sheets() const;
 
diff --git a/Services/WebContent/WebContentClient.ipc b/Services/WebContent/WebContentClient.ipc
index 4e274efd20c..9edb48a7ec3 100644
--- a/Services/WebContent/WebContentClient.ipc
+++ b/Services/WebContent/WebContentClient.ipc
@@ -92,7 +92,7 @@ endpoint WebContentClient
     did_change_audio_play_state(u64 page_id, Web::HTML::AudioPlayState play_state) =|
 
     did_output_js_console_message(u64 page_id, i32 message_index) =|
-    did_get_js_console_messages(u64 page_id, i32 start_index, Vector<ByteString> message_types, Vector<ByteString> messages) =|
+    did_get_js_console_messages(u64 page_id, i32 start_index, Vector<String> message_types, Vector<String> messages) =|
 
     did_finish_text_test(u64 page_id, String text) =|
     did_set_test_timeout(u64 page_id, double milliseconds) =|
diff --git a/Services/WebContent/WebContentConsoleClient.cpp b/Services/WebContent/WebContentConsoleClient.cpp
index 1376c3c4a0e..be032a2f904 100644
--- a/Services/WebContent/WebContentConsoleClient.cpp
+++ b/Services/WebContent/WebContentConsoleClient.cpp
@@ -43,7 +43,7 @@ void WebContentConsoleClient::visit_edges(JS::Cell::Visitor& visitor)
     visitor.visit(m_console_global_environment_extensions);
 }
 
-void WebContentConsoleClient::handle_input(ByteString const& js_source)
+void WebContentConsoleClient::handle_input(StringView js_source)
 {
     if (!m_console_global_environment_extensions)
         return;
@@ -58,16 +58,16 @@ void WebContentConsoleClient::handle_input(ByteString const& js_source)
 
     if (result.value().has_value()) {
         m_console_global_environment_extensions->set_most_recent_result(result.value().value());
-        print_html(JS::MarkupGenerator::html_from_value(*result.value()).release_value_but_fixme_should_propagate_errors().to_byte_string());
+        print_html(JS::MarkupGenerator::html_from_value(*result.value()).release_value_but_fixme_should_propagate_errors());
     }
 }
 
 void WebContentConsoleClient::report_exception(JS::Error const& exception, bool in_promise)
 {
-    print_html(JS::MarkupGenerator::html_from_error(exception, in_promise).release_value_but_fixme_should_propagate_errors().to_byte_string());
+    print_html(JS::MarkupGenerator::html_from_error(exception, in_promise).release_value_but_fixme_should_propagate_errors());
 }
 
-void WebContentConsoleClient::print_html(ByteString const& line)
+void WebContentConsoleClient::print_html(String const& line)
 {
     m_message_log.append({ .type = ConsoleOutput::Type::HTML, .data = line });
     m_client->did_output_js_console_message(m_message_log.size() - 1);
@@ -75,11 +75,11 @@ void WebContentConsoleClient::print_html(ByteString const& line)
 
 void WebContentConsoleClient::clear_output()
 {
-    m_message_log.append({ .type = ConsoleOutput::Type::Clear, .data = "" });
+    m_message_log.append({ .type = ConsoleOutput::Type::Clear, .data = String {} });
     m_client->did_output_js_console_message(m_message_log.size() - 1);
 }
 
-void WebContentConsoleClient::begin_group(ByteString const& label, bool start_expanded)
+void WebContentConsoleClient::begin_group(String const& label, bool start_expanded)
 {
     m_message_log.append({ .type = start_expanded ? ConsoleOutput::Type::BeginGroup : ConsoleOutput::Type::BeginGroupCollapsed, .data = label });
     m_client->did_output_js_console_message(m_message_log.size() - 1);
@@ -87,7 +87,7 @@ void WebContentConsoleClient::begin_group(ByteString const& label, bool start_ex
 
 void WebContentConsoleClient::end_group()
 {
-    m_message_log.append({ .type = ConsoleOutput::Type::EndGroup, .data = "" });
+    m_message_log.append({ .type = ConsoleOutput::Type::EndGroup, .data = String {} });
     m_client->did_output_js_console_message(m_message_log.size() - 1);
 }
 
@@ -105,8 +105,8 @@ void WebContentConsoleClient::send_messages(i32 start_index)
     }
 
     // FIXME: Replace with a single Vector of message structs
-    Vector<ByteString> message_types;
-    Vector<ByteString> messages;
+    Vector<String> message_types;
+    Vector<String> messages;
     message_types.ensure_capacity(messages_to_send);
     messages.ensure_capacity(messages_to_send);
 
@@ -114,26 +114,26 @@ void WebContentConsoleClient::send_messages(i32 start_index)
         auto& message = m_message_log[i];
         switch (message.type) {
         case ConsoleOutput::Type::HTML:
-            message_types.append("html"sv);
+            message_types.append("html"_string);
             break;
         case ConsoleOutput::Type::Clear:
-            message_types.append("clear"sv);
+            message_types.append("clear"_string);
             break;
         case ConsoleOutput::Type::BeginGroup:
-            message_types.append("group"sv);
+            message_types.append("group"_string);
             break;
         case ConsoleOutput::Type::BeginGroupCollapsed:
-            message_types.append("groupCollapsed"sv);
+            message_types.append("groupCollapsed"_string);
             break;
         case ConsoleOutput::Type::EndGroup:
-            message_types.append("groupEnd"sv);
+            message_types.append("groupEnd"_string);
             break;
         }
 
         messages.append(message.data);
     }
 
-    m_client->did_get_js_console_messages(start_index, message_types, messages);
+    m_client->did_get_js_console_messages(start_index, move(message_types), move(messages));
 }
 
 void WebContentConsoleClient::clear()
@@ -215,7 +215,7 @@ JS::ThrowCompletionOr<JS::Value> WebContentConsoleClient::printer(JS::Console::L
         html.appendff("</tbody>");
         html.appendff("</table>");
         html.appendff("</div>");
-        print_html(html.string_view());
+        print_html(MUST(html.to_string()));
 
         auto output = TRY(generically_format_values(table_args));
         m_console->output_debug_message(log_level, output);
@@ -234,13 +234,13 @@ JS::ThrowCompletionOr<JS::Value> WebContentConsoleClient::printer(JS::Console::L
             html.appendff("-> {}<br>", escape_html_entities(function_name));
         html.append("</span>"sv);
 
-        print_html(html.string_view());
+        print_html(MUST(html.to_string()));
         return JS::js_undefined();
     }
 
     if (log_level == JS::Console::LogLevel::Group || log_level == JS::Console::LogLevel::GroupCollapsed) {
         auto group = arguments.get<JS::Console::Group>();
-        begin_group(ByteString::formatted("<span style='{}'>{}</span>", styling, escape_html_entities(group.label)), log_level == JS::Console::LogLevel::Group);
+        begin_group(MUST(String::formatted("<span style='{}'>{}</span>", styling, escape_html_entities(group.label))), log_level == JS::Console::LogLevel::Group);
         return JS::js_undefined();
     }
 
@@ -272,7 +272,7 @@ JS::ThrowCompletionOr<JS::Value> WebContentConsoleClient::printer(JS::Console::L
 
     html.append(escape_html_entities(output));
     html.append("</span>"sv);
-    print_html(html.string_view());
+    print_html(MUST(html.to_string()));
 
     return JS::js_undefined();
 }
diff --git a/Services/WebContent/WebContentConsoleClient.h b/Services/WebContent/WebContentConsoleClient.h
index 6be8c60f50a..4635c99aa3d 100644
--- a/Services/WebContent/WebContentConsoleClient.h
+++ b/Services/WebContent/WebContentConsoleClient.h
@@ -8,6 +8,7 @@
 
 #pragma once
 
+#include <AK/String.h>
 #include <AK/Vector.h>
 #include <AK/Weakable.h>
 #include <LibJS/Console.h>
@@ -25,7 +26,7 @@ class WebContentConsoleClient final : public JS::ConsoleClient {
 public:
     virtual ~WebContentConsoleClient() override;
 
-    void handle_input(ByteString const& js_source);
+    void handle_input(StringView js_source);
     void send_messages(i32 start_index);
     void report_exception(JS::Error const&, bool) override;
 
@@ -46,8 +47,8 @@ private:
     GC::Ptr<ConsoleGlobalEnvironmentExtensions> m_console_global_environment_extensions;
 
     void clear_output();
-    void print_html(ByteString const& line);
-    void begin_group(ByteString const& label, bool start_expanded);
+    void print_html(String const& line);
+    void begin_group(String const& label, bool start_expanded);
     virtual void end_group() override;
 
     struct ConsoleOutput {
@@ -59,7 +60,7 @@ private:
             EndGroup,
         };
         Type type;
-        ByteString data;
+        String data;
     };
     Vector<ConsoleOutput> m_message_log;
 
diff --git a/Services/WebContent/WebContentServer.ipc b/Services/WebContent/WebContentServer.ipc
index 86ad895db53..845a1423e4d 100644
--- a/Services/WebContent/WebContentServer.ipc
+++ b/Services/WebContent/WebContentServer.ipc
@@ -48,8 +48,11 @@ endpoint WebContentServer
     highlight_dom_node(u64 page_id, Web::UniqueNodeID node_id, Optional<Web::CSS::Selector::PseudoElement::Type> pseudo_element) =|
     inspect_accessibility_tree(u64 page_id) =|
     get_hovered_node_id(u64 page_id) =|
-    js_console_input(u64 page_id, ByteString js_source) =|
+
+    js_console_input(u64 page_id, String js_source) =|
     js_console_request_messages(u64 page_id, i32 start_index) =|
+    run_javascript(u64 page_id, String js_source) =|
+
     list_style_sheets(u64 page_id) =|
     request_style_sheet_source(u64 page_id, Web::CSS::StyleSheetIdentifier identifier) =|
 
@@ -68,8 +71,6 @@ endpoint WebContentServer
 
     request_internal_page_info(u64 page_id, WebView::PageInfoType type) =|
 
-    run_javascript(u64 page_id, ByteString js_source) =|
-
     get_selected_text(u64 page_id) => (ByteString selection)
     select_all(u64 page_id) =|
     paste(u64 page_id, String text) =|