LibGUI+Userland: Port Labels to String

63 files changed, 172 insertions, 174 deletions

diff --git a/Userland/Applications/3DFileViewer/main.cpp b/Userland/Applications/3DFileViewer/main.cpp
index 0859873dbc..6f618a8c1f 100644
--- a/Userland/Applications/3DFileViewer/main.cpp
+++ b/Userland/Applications/3DFileViewer/main.cpp
@@ -266,7 +266,7 @@ void GLContextWidget::timer_event(Core::TimerEvent&)
     if ((m_cycles % 30) == 0) {
         auto render_time = static_cast<double>(m_accumulated_time.to_milliseconds()) / 30.0;
         auto frame_rate = render_time > 0 ? 1000 / render_time : 0;
-        m_stats->set_text(DeprecatedString::formatted("{:.0f} fps, {:.1f} ms", frame_rate, render_time));
+        m_stats->set_text(String::formatted("{:.0f} fps, {:.1f} ms", frame_rate, render_time).release_value_but_fixme_should_propagate_errors());
         m_accumulated_time = {};
 
         glEnable(GL_LIGHT0);
diff --git a/Userland/Applications/Browser/DownloadWidget.cpp b/Userland/Applications/Browser/DownloadWidget.cpp
index ac6cfa313f..2c06e5aa32 100644
--- a/Userland/Applications/Browser/DownloadWidget.cpp
+++ b/Userland/Applications/Browser/DownloadWidget.cpp
@@ -69,7 +69,7 @@ DownloadWidget::DownloadWidget(const URL& url)
     m_browser_image->load_from_file("/res/graphics/download-animation.gif"sv);
     animation_container.add_spacer().release_value_but_fixme_should_propagate_errors();
 
-    auto& source_label = add<GUI::Label>(DeprecatedString::formatted("From: {}", url));
+    auto& source_label = add<GUI::Label>(String::formatted("From: {}", url).release_value_but_fixme_should_propagate_errors());
     source_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     source_label.set_fixed_height(16);
 
@@ -80,7 +80,7 @@ DownloadWidget::DownloadWidget(const URL& url)
     m_progress_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     m_progress_label->set_fixed_height(16);
 
-    auto& destination_label = add<GUI::Label>(DeprecatedString::formatted("To: {}", m_destination_path));
+    auto& destination_label = add<GUI::Label>(String::formatted("To: {}", m_destination_path).release_value_but_fixme_should_propagate_errors());
     destination_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     destination_label.set_fixed_height(16);
 
@@ -127,7 +127,7 @@ void DownloadWidget::did_progress(Optional<u32> total_size, u32 downloaded_size)
         builder.append("Downloaded "sv);
         builder.append(human_readable_size(downloaded_size));
         builder.appendff(" in {} sec", m_elapsed_timer.elapsed_time().to_seconds());
-        m_progress_label->set_text(builder.to_deprecated_string());
+        m_progress_label->set_text(builder.to_string().release_value_but_fixme_should_propagate_errors());
     }
 
     {
diff --git a/Userland/Applications/Calculator/CalculatorWidget.cpp b/Userland/Applications/Calculator/CalculatorWidget.cpp
index 971457bc11..2c7d959007 100644
--- a/Userland/Applications/Calculator/CalculatorWidget.cpp
+++ b/Userland/Applications/Calculator/CalculatorWidget.cpp
@@ -152,9 +152,9 @@ void CalculatorWidget::update_display()
 {
     m_entry->set_text(m_keypad.to_deprecated_string());
     if (m_calculator.has_error())
-        m_label->set_text("E");
+        m_label->set_text("E"_short_string);
     else
-        m_label->set_text("");
+        m_label->set_text({});
 }
 
 void CalculatorWidget::keydown_event(GUI::KeyEvent& event)
diff --git a/Userland/Applications/Calendar/AddEventDialog.cpp b/Userland/Applications/Calendar/AddEventDialog.cpp
index 3be8ec5aa7..72466ef258 100644
--- a/Userland/Applications/Calendar/AddEventDialog.cpp
+++ b/Userland/Applications/Calendar/AddEventDialog.cpp
@@ -36,7 +36,7 @@ AddEventDialog::AddEventDialog(Core::DateTime date_time, Window* parent_window)
     top_container.set_layout<GUI::VerticalBoxLayout>(4);
     top_container.set_fixed_height(45);
 
-    auto& add_label = top_container.add<GUI::Label>("Add title & date:");
+    auto& add_label = top_container.add<GUI::Label>("Add title & date:"_string.release_value_but_fixme_should_propagate_errors());
     add_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     add_label.set_fixed_height(14);
     add_label.set_font(Gfx::FontDatabase::default_font().bold_variant());
diff --git a/Userland/Applications/CharacterMap/CharacterMapWidget.cpp b/Userland/Applications/CharacterMap/CharacterMapWidget.cpp
index e642de77bc..c559c78450 100644
--- a/Userland/Applications/CharacterMap/CharacterMapWidget.cpp
+++ b/Userland/Applications/CharacterMap/CharacterMapWidget.cpp
@@ -169,7 +169,7 @@ void CharacterMapWidget::did_change_font()
 {
     // No need to track glyph modifications by cloning
     m_glyph_map->GUI::AbstractScrollableWidget::set_font(font());
-    m_font_name_label->set_text(font().human_readable_name());
+    m_font_name_label->set_text(String::from_deprecated_string(font().human_readable_name()).release_value_but_fixme_should_propagate_errors());
     m_output_box->set_font(font());
 }
 
diff --git a/Userland/Applications/ClockSettings/ClockSettingsWidget.cpp b/Userland/Applications/ClockSettings/ClockSettingsWidget.cpp
index 665db476bb..9199faf669 100644
--- a/Userland/Applications/ClockSettings/ClockSettingsWidget.cpp
+++ b/Userland/Applications/ClockSettings/ClockSettingsWidget.cpp
@@ -119,5 +119,5 @@ void ClockSettingsWidget::update_time_format_string()
 
 void ClockSettingsWidget::update_clock_preview()
 {
-    m_clock_preview->set_text(Core::DateTime::now().to_deprecated_string(m_time_format));
+    m_clock_preview->set_text(Core::DateTime::now().to_string(m_time_format).release_value_but_fixme_should_propagate_errors());
 }
diff --git a/Userland/Applications/CrashReporter/main.cpp b/Userland/Applications/CrashReporter/main.cpp
index 01a62acbfa..42bdfa8d65 100644
--- a/Userland/Applications/CrashReporter/main.cpp
+++ b/Userland/Applications/CrashReporter/main.cpp
@@ -214,24 +214,24 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         app_name = af->name();
 
     auto& description_label = *widget->find_descendant_of_type_named<GUI::Label>("description");
-    description_label.set_text(DeprecatedString::formatted("\"{}\" (PID {}) has crashed - {} (signal {})", app_name, pid, strsignal(termination_signal), termination_signal));
+    description_label.set_text(TRY(String::formatted("\"{}\" (PID {}) has crashed - {} (signal {})", app_name, pid, strsignal(termination_signal), termination_signal)));
 
     auto& executable_link_label = *widget->find_descendant_of_type_named<GUI::LinkLabel>("executable_link");
-    executable_link_label.set_text(LexicalPath::canonicalized_path(executable_path));
+    executable_link_label.set_text(TRY(String::from_deprecated_string(LexicalPath::canonicalized_path(executable_path))));
     executable_link_label.on_click = [&] {
         LexicalPath path { executable_path };
         Desktop::Launcher::open(URL::create_with_file_scheme(path.dirname(), path.basename()));
     };
 
     auto& coredump_link_label = *widget->find_descendant_of_type_named<GUI::LinkLabel>("coredump_link");
-    coredump_link_label.set_text(LexicalPath::canonicalized_path(coredump_path));
+    coredump_link_label.set_text(TRY(String::from_deprecated_string(LexicalPath::canonicalized_path(coredump_path))));
     coredump_link_label.on_click = [&] {
         LexicalPath path { coredump_path };
         Desktop::Launcher::open(URL::create_with_file_scheme(path.dirname(), path.basename()));
     };
 
     auto& arguments_label = *widget->find_descendant_of_type_named<GUI::Label>("arguments_label");
-    arguments_label.set_text(DeprecatedString::join(' ', crashed_process_arguments));
+    arguments_label.set_text(TRY(String::join(' ', crashed_process_arguments)));
 
     auto& progressbar = *widget->find_descendant_of_type_named<GUI::Progressbar>("progressbar");
     auto& tab_widget = *widget->find_descendant_of_type_named<GUI::TabWidget>("tab_widget");
@@ -239,7 +239,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     auto backtrace_tab = TRY(tab_widget.try_add_tab<GUI::Widget>(TRY("Backtrace"_string)));
     TRY(backtrace_tab->try_set_layout<GUI::VerticalBoxLayout>(4));
 
-    auto backtrace_label = TRY(backtrace_tab->try_add<GUI::Label>("A backtrace for each thread alive during the crash is listed below:"));
+    auto backtrace_label = TRY(backtrace_tab->try_add<GUI::Label>(TRY("A backtrace for each thread alive during the crash is listed below:"_string)));
     backtrace_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     backtrace_label->set_fixed_height(16);
 
@@ -249,7 +249,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     auto cpu_registers_tab = TRY(tab_widget.try_add_tab<GUI::Widget>(TRY("CPU Registers"_string)));
     cpu_registers_tab->set_layout<GUI::VerticalBoxLayout>(4);
 
-    auto cpu_registers_label = TRY(cpu_registers_tab->try_add<GUI::Label>("The CPU register state for each thread alive during the crash is listed below:"));
+    auto cpu_registers_label = TRY(cpu_registers_tab->try_add<GUI::Label>(TRY("The CPU register state for each thread alive during the crash is listed below:"_string)));
     cpu_registers_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     cpu_registers_label->set_fixed_height(16);
 
diff --git a/Userland/Applications/DisplaySettings/DesktopSettingsWidget.cpp b/Userland/Applications/DisplaySettings/DesktopSettingsWidget.cpp
index e832a5d35f..6a5b4b065c 100644
--- a/Userland/Applications/DisplaySettings/DesktopSettingsWidget.cpp
+++ b/Userland/Applications/DisplaySettings/DesktopSettingsWidget.cpp
@@ -37,7 +37,7 @@ ErrorOr<void> DesktopSettingsWidget::create_frame()
     };
 
     auto& keyboard_shortcuts_label = *find_descendant_of_type_named<GUI::Label>("keyboard_shortcuts_label");
-    keyboard_shortcuts_label.set_text("\xE2\x84\xB9\tCtrl+Alt+{Shift}+Arrows moves between workspaces");
+    keyboard_shortcuts_label.set_text(TRY("\xE2\x84\xB9\tCtrl+Alt+{Shift}+Arrows moves between workspaces"_string));
 
     return {};
 }
diff --git a/Userland/Applications/DisplaySettings/FontSettingsWidget.cpp b/Userland/Applications/DisplaySettings/FontSettingsWidget.cpp
index d3e02499ae..a76487d733 100644
--- a/Userland/Applications/DisplaySettings/FontSettingsWidget.cpp
+++ b/Userland/Applications/DisplaySettings/FontSettingsWidget.cpp
@@ -72,7 +72,7 @@ ErrorOr<void> FontSettingsWidget::setup_interface()
 
 static void update_label_with_font(GUI::Label& label, Gfx::Font const& font)
 {
-    label.set_text(font.human_readable_name());
+    label.set_text(String::from_deprecated_string(font.human_readable_name()).release_value_but_fixme_should_propagate_errors());
     label.set_font(font);
 }
 
diff --git a/Userland/Applications/DisplaySettings/MonitorSettingsWidget.cpp b/Userland/Applications/DisplaySettings/MonitorSettingsWidget.cpp
index 0dc5607a00..466d4c83b9 100644
--- a/Userland/Applications/DisplaySettings/MonitorSettingsWidget.cpp
+++ b/Userland/Applications/DisplaySettings/MonitorSettingsWidget.cpp
@@ -217,7 +217,7 @@ ErrorOr<void> MonitorSettingsWidget::selected_screen_index_or_resolution_changed
     auto dpi_label_value = String::formatted("{} dpi", screen_dpi.value());
     if (screen_dpi.has_value() && !dpi_label_value.is_error()) {
         m_dpi_label->set_tooltip(screen_dpi_tooltip.to_deprecated_string());
-        m_dpi_label->set_text(dpi_label_value.release_value().to_deprecated_string());
+        m_dpi_label->set_text(dpi_label_value.release_value());
         m_dpi_label->set_visible(true);
     } else {
         m_dpi_label->set_visible(false);
diff --git a/Userland/Applications/Escalator/EscalatorWindow.cpp b/Userland/Applications/Escalator/EscalatorWindow.cpp
index abed1f7c4a..f8cbd0d97f 100644
--- a/Userland/Applications/Escalator/EscalatorWindow.cpp
+++ b/Userland/Applications/Escalator/EscalatorWindow.cpp
@@ -36,13 +36,13 @@ EscalatorWindow::EscalatorWindow(StringView executable, Vector<StringView> argum
 
     RefPtr<GUI::Label> app_label = *main_widget->find_descendant_of_type_named<GUI::Label>("description");
 
-    DeprecatedString prompt;
+    String prompt;
     if (options.description.is_empty())
-        prompt = DeprecatedString::formatted("{} requires root access. Please enter password for user \"{}\".", m_arguments[0], m_current_user.username());
+        prompt = String::formatted("{} requires root access. Please enter password for user \"{}\".", m_arguments[0], m_current_user.username()).release_value_but_fixme_should_propagate_errors();
     else
-        prompt = options.description;
+        prompt = String::from_utf8(options.description).release_value_but_fixme_should_propagate_errors();
 
-    app_label->set_text(prompt);
+    app_label->set_text(move(prompt));
 
     m_icon_image_widget = *main_widget->find_descendant_of_type_named<GUI::ImageWidget>("icon");
     m_icon_image_widget->set_bitmap(app_icon.bitmap_for_size(32));
diff --git a/Userland/Applications/FileManager/DirectoryView.cpp b/Userland/Applications/FileManager/DirectoryView.cpp
index 3c846073d7..d55a8dbe21 100644
--- a/Userland/Applications/FileManager/DirectoryView.cpp
+++ b/Userland/Applications/FileManager/DirectoryView.cpp
@@ -153,7 +153,7 @@ void DirectoryView::setup_model()
 {
     m_model->on_directory_change_error = [this](int, char const* error_string) {
         auto failed_path = m_model->root_path();
-        auto error_message = DeprecatedString::formatted("Could not read {}:\n{}", failed_path, error_string);
+        auto error_message = String::formatted("Could not read {}:\n{}", failed_path, error_string).release_value_but_fixme_should_propagate_errors();
         m_error_label->set_text(error_message);
         set_active_widget(m_error_label);
 
diff --git a/Userland/Applications/FileManager/FileOperationProgressWidget.cpp b/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
index 97c1fb2ee6..3dc21046f8 100644
--- a/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
+++ b/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
@@ -54,16 +54,16 @@ FileOperationProgressWidget::FileOperationProgressWidget(FileOperation operation
 
     switch (m_operation) {
     case FileOperation::Copy:
-        files_copied_label.set_text("Copying files...");
-        current_file_action_label.set_text("Copying: ");
+        files_copied_label.set_text("Copying files..."_string.release_value_but_fixme_should_propagate_errors());
+        current_file_action_label.set_text("Copying: "_string.release_value_but_fixme_should_propagate_errors());
         break;
     case FileOperation::Move:
-        files_copied_label.set_text("Moving files...");
-        current_file_action_label.set_text("Moving: ");
+        files_copied_label.set_text("Moving files..."_string.release_value_but_fixme_should_propagate_errors());
+        current_file_action_label.set_text("Moving: "_string.release_value_but_fixme_should_propagate_errors());
         break;
     case FileOperation::Delete:
-        files_copied_label.set_text("Deleting files...");
-        current_file_action_label.set_text("Deleting: ");
+        files_copied_label.set_text("Deleting files..."_string.release_value_but_fixme_should_propagate_errors());
+        current_file_action_label.set_text("Deleting: "_string.release_value_but_fixme_should_propagate_errors());
         break;
     default:
         VERIFY_NOT_REACHED();
@@ -179,23 +179,23 @@ void FileOperationProgressWidget::did_progress(off_t bytes_done, off_t total_byt
     auto& overall_progressbar = *find_descendant_of_type_named<GUI::Progressbar>("overall_progressbar");
     auto& estimated_time_label = *find_descendant_of_type_named<GUI::Label>("estimated_time_label");
 
-    current_file_label.set_text(current_filename);
+    current_file_label.set_text(String::from_utf8(current_filename).release_value_but_fixme_should_propagate_errors());
 
     switch (m_operation) {
     case FileOperation::Copy:
-        files_copied_label.set_text(DeprecatedString::formatted("Copying file {} of {}", files_done, total_file_count));
+        files_copied_label.set_text(String::formatted("Copying file {} of {}", files_done, total_file_count).release_value_but_fixme_should_propagate_errors());
         break;
     case FileOperation::Move:
-        files_copied_label.set_text(DeprecatedString::formatted("Moving file {} of {}", files_done, total_file_count));
+        files_copied_label.set_text(String::formatted("Moving file {} of {}", files_done, total_file_count).release_value_but_fixme_should_propagate_errors());
         break;
     case FileOperation::Delete:
-        files_copied_label.set_text(DeprecatedString::formatted("Deleting file {} of {}", files_done, total_file_count));
+        files_copied_label.set_text(String::formatted("Deleting file {} of {}", files_done, total_file_count).release_value_but_fixme_should_propagate_errors());
         break;
     default:
         VERIFY_NOT_REACHED();
     }
 
-    estimated_time_label.set_text(estimate_time(bytes_done, total_byte_count));
+    estimated_time_label.set_text(String::from_deprecated_string(estimate_time(bytes_done, total_byte_count)).release_value_but_fixme_should_propagate_errors());
 
     if (total_byte_count) {
         window()->set_progress(100.0f * bytes_done / total_byte_count);
diff --git a/Userland/Applications/FileManager/PropertiesWindow.cpp b/Userland/Applications/FileManager/PropertiesWindow.cpp
index c08a6b5d62..7ee23df3f7 100644
--- a/Userland/Applications/FileManager/PropertiesWindow.cpp
+++ b/Userland/Applications/FileManager/PropertiesWindow.cpp
@@ -72,7 +72,7 @@ ErrorOr<void> PropertiesWindow::create_widgets(bool disable_rename)
     };
 
     auto* location = general_tab->find_descendant_of_type_named<GUI::LinkLabel>("location");
-    location->set_text(m_path);
+    location->set_text(TRY(String::from_deprecated_string(m_path)));
     location->on_click = [this] {
         Desktop::Launcher::open(URL::create_with_file_scheme(m_parent_path, m_name));
     };
@@ -98,18 +98,18 @@ ErrorOr<void> PropertiesWindow::create_widgets(bool disable_rename)
     m_old_mode = st.st_mode;
 
     auto* type = general_tab->find_descendant_of_type_named<GUI::Label>("type");
-    type->set_text(get_description(m_mode));
+    type->set_text(TRY(String::from_deprecated_string(get_description(m_mode))));
 
     if (S_ISLNK(m_mode)) {
         auto link_destination_or_error = FileSystem::read_link(m_path);
         if (link_destination_or_error.is_error()) {
             perror("readlink");
         } else {
-            auto link_destination = link_destination_or_error.release_value().to_deprecated_string();
+            auto link_destination = link_destination_or_error.release_value();
             auto* link_location = general_tab->find_descendant_of_type_named<GUI::LinkLabel>("link_location");
             link_location->set_text(link_destination);
             link_location->on_click = [link_destination] {
-                auto link_directory = LexicalPath(link_destination);
+                auto link_directory = LexicalPath(link_destination.to_deprecated_string());
                 Desktop::Launcher::open(URL::create_with_file_scheme(link_directory.dirname(), link_directory.basename()));
             };
         }
@@ -119,19 +119,21 @@ ErrorOr<void> PropertiesWindow::create_widgets(bool disable_rename)
     }
 
     m_size_label = general_tab->find_descendant_of_type_named<GUI::Label>("size");
-    m_size_label->set_text(S_ISDIR(st.st_mode) ? "Calculating..." : human_readable_size_long(st.st_size, UseThousandsSeparator::Yes));
+    m_size_label->set_text(S_ISDIR(st.st_mode)
+            ? TRY("Calculating..."_string)
+            : TRY(String::from_deprecated_string(human_readable_size_long(st.st_size, UseThousandsSeparator::Yes))));
 
     auto* owner = general_tab->find_descendant_of_type_named<GUI::Label>("owner");
-    owner->set_text(DeprecatedString::formatted("{} ({})", owner_name, st.st_uid));
+    owner->set_text(String::formatted("{} ({})", owner_name, st.st_uid).release_value_but_fixme_should_propagate_errors());
 
     auto* group = general_tab->find_descendant_of_type_named<GUI::Label>("group");
-    group->set_text(DeprecatedString::formatted("{} ({})", group_name, st.st_gid));
+    group->set_text(String::formatted("{} ({})", group_name, st.st_gid).release_value_but_fixme_should_propagate_errors());
 
     auto* created_at = general_tab->find_descendant_of_type_named<GUI::Label>("created_at");
-    created_at->set_text(GUI::FileSystemModel::timestamp_string(st.st_ctime));
+    created_at->set_text(String::from_deprecated_string(GUI::FileSystemModel::timestamp_string(st.st_ctime)).release_value_but_fixme_should_propagate_errors());
 
     auto* last_modified = general_tab->find_descendant_of_type_named<GUI::Label>("last_modified");
-    last_modified->set_text(GUI::FileSystemModel::timestamp_string(st.st_mtime));
+    last_modified->set_text(String::from_deprecated_string(GUI::FileSystemModel::timestamp_string(st.st_mtime)).release_value_but_fixme_should_propagate_errors());
 
     auto* owner_read = general_tab->find_descendant_of_type_named<GUI::CheckBox>("owner_read");
     auto* owner_write = general_tab->find_descendant_of_type_named<GUI::CheckBox>("owner_write");
@@ -173,7 +175,7 @@ ErrorOr<void> PropertiesWindow::create_widgets(bool disable_rename)
         m_directory_statistics_calculator->on_update = [this, origin_event_loop = &Core::EventLoop::current()](off_t total_size_in_bytes, size_t file_count, size_t directory_count) {
             origin_event_loop->deferred_invoke([=, weak_this = make_weak_ptr<PropertiesWindow>()] {
                 if (auto strong_this = weak_this.strong_ref())
-                    strong_this->m_size_label->set_text(DeprecatedString::formatted("{}\n{:'d} files, {:'d} subdirectories", human_readable_size_long(total_size_in_bytes, UseThousandsSeparator::Yes), file_count, directory_count));
+                    strong_this->m_size_label->set_text(String::formatted("{}\n{} files, {} subdirectories", human_readable_size_long(total_size_in_bytes, UseThousandsSeparator::Yes), file_count, directory_count).release_value_but_fixme_should_propagate_errors());
             });
         };
         m_directory_statistics_calculator->start();
diff --git a/Userland/Applications/FontEditor/MainWidget.cpp b/Userland/Applications/FontEditor/MainWidget.cpp
index c47f81a2cd..8c6a234225 100644
--- a/Userland/Applications/FontEditor/MainWidget.cpp
+++ b/Userland/Applications/FontEditor/MainWidget.cpp
@@ -73,7 +73,7 @@ ErrorOr<RefPtr<GUI::Window>> MainWidget::create_preview_window()
 
     m_preview_textbox = find_descendant_of_type_named<GUI::TextBox>("preview_textbox");
     m_preview_textbox->on_change = [&] {
-        auto preview = DeprecatedString::formatted("{}\n{}", m_preview_textbox->text(), Unicode::to_unicode_uppercase_full(m_preview_textbox->text()).release_value_but_fixme_should_propagate_errors());
+        auto preview = String::formatted("{}\n{}", m_preview_textbox->text(), Unicode::to_unicode_uppercase_full(m_preview_textbox->text()).release_value_but_fixme_should_propagate_errors()).release_value_but_fixme_should_propagate_errors();
         m_preview_label->set_text(preview);
     };
     m_preview_textbox->set_text(pangrams[0]);
diff --git a/Userland/Applications/MouseSettings/MouseWidget.cpp b/Userland/Applications/MouseSettings/MouseWidget.cpp
index 32100a6b98..f8d5940d9e 100644
--- a/Userland/Applications/MouseSettings/MouseWidget.cpp
+++ b/Userland/Applications/MouseSettings/MouseWidget.cpp
@@ -92,19 +92,19 @@ void MouseWidget::reset_default_values()
 
 void MouseWidget::update_speed_label()
 {
-    m_speed_label->set_text(DeprecatedString::formatted("{} %", m_speed_slider->value()));
+    m_speed_label->set_text(String::formatted("{} %", m_speed_slider->value()).release_value_but_fixme_should_propagate_errors());
 }
 
 void MouseWidget::update_double_click_speed_label()
 {
-    m_double_click_speed_label->set_text(DeprecatedString::formatted("{} ms", m_double_click_speed_slider->value()));
+    m_double_click_speed_label->set_text(String::formatted("{} ms", m_double_click_speed_slider->value()).release_value_but_fixme_should_propagate_errors());
 }
 
 void MouseWidget::update_switch_buttons_image_label()
 {
     if (m_switch_buttons_checkbox->is_checked()) {
-        m_switch_buttons_image_label->set_icon_from_path("/res/graphics/mouse-button-right.png");
+        m_switch_buttons_image_label->set_icon_from_path("/res/graphics/mouse-button-right.png"sv);
     } else {
-        m_switch_buttons_image_label->set_icon_from_path("/res/graphics/mouse-button-left.png");
+        m_switch_buttons_image_label->set_icon_from_path("/res/graphics/mouse-button-left.png"sv);
     }
 }
diff --git a/Userland/Applications/PDFViewer/PDFViewerWidget.cpp b/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
index c35f5bc731..b3d0a5ea49 100644
--- a/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
+++ b/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
@@ -387,7 +387,7 @@ PDF::PDFErrorOr<void> PDFViewerWidget::try_open_file(StringView path, NonnullOwn
     TRY(document->initialize());
     TRY(m_viewer->set_document(document));
 
-    m_total_page_label->set_text(DeprecatedString::formatted("of {}", document->get_page_count()));
+    m_total_page_label->set_text(TRY(String::formatted("of {}", document->get_page_count())));
 
     m_page_text_box->set_enabled(true);
     m_page_text_box->set_current_number(1, GUI::AllowCallback::No);
diff --git a/Userland/Applications/Piano/ExportProgressWindow.cpp b/Userland/Applications/Piano/ExportProgressWindow.cpp
index 3716e9f847..ab4a801083 100644
--- a/Userland/Applications/Piano/ExportProgressWindow.cpp
+++ b/Userland/Applications/Piano/ExportProgressWindow.cpp
@@ -38,7 +38,7 @@ ErrorOr<void> ExportProgressWindow::initialize_fallibles()
 
 void ExportProgressWindow::set_filename(StringView filename)
 {
-    m_label->set_text(DeprecatedString::formatted("Rendering audio to {}…", filename));
+    m_label->set_text(String::formatted("Rendering audio to {}…", filename).release_value_but_fixme_should_propagate_errors());
     update();
 }
 
diff --git a/Userland/Applications/Piano/MainWidget.cpp b/Userland/Applications/Piano/MainWidget.cpp
index 65e7615f48..02b3741ddf 100644
--- a/Userland/Applications/Piano/MainWidget.cpp
+++ b/Userland/Applications/Piano/MainWidget.cpp
@@ -59,9 +59,9 @@ ErrorOr<void> MainWidget::initialize()
     m_octave_container = TRY(m_keys_and_knobs_container->try_add<GUI::Widget>());
     m_octave_container->set_preferred_width(GUI::SpecialDimension::Fit);
     TRY(m_octave_container->try_set_layout<GUI::VerticalBoxLayout>());
-    auto octave_label = TRY(m_octave_container->try_add<GUI::Label>("Octave"));
+    auto octave_label = TRY(m_octave_container->try_add<GUI::Label>("Octave"_short_string));
     octave_label->set_preferred_width(GUI::SpecialDimension::Fit);
-    m_octave_value = TRY(m_octave_container->try_add<GUI::Label>(DeprecatedString::number(m_track_manager.keyboard()->virtual_keyboard_octave())));
+    m_octave_value = TRY(m_octave_container->try_add<GUI::Label>(TRY(String::number(m_track_manager.keyboard()->virtual_keyboard_octave()))));
     m_octave_value->set_preferred_width(GUI::SpecialDimension::Fit);
 
     // FIXME: Implement vertical flipping in GUI::Slider, not here.
@@ -75,7 +75,7 @@ ErrorOr<void> MainWidget::initialize()
         int new_octave = octave_max - value;
         set_octave_via_slider(new_octave);
         VERIFY(new_octave == m_track_manager.keyboard()->virtual_keyboard_octave());
-        m_octave_value->set_text(DeprecatedString::number(new_octave));
+        m_octave_value->set_text(String::number(new_octave).release_value_but_fixme_should_propagate_errors());
     };
 
     m_knobs_widget = TRY(m_keys_and_knobs_container->try_add<TrackControlsWidget>(m_track_manager, *this));
diff --git a/Userland/Applications/Piano/PlayerWidget.cpp b/Userland/Applications/Piano/PlayerWidget.cpp
index 0b2e54b15a..be4011d6eb 100644
--- a/Userland/Applications/Piano/PlayerWidget.cpp
+++ b/Userland/Applications/Piano/PlayerWidget.cpp
@@ -43,7 +43,7 @@ ErrorOr<void> PlayerWidget::initialize()
     set_fill_with_background_color(true);
     TRY(m_track_number_choices.try_append("1"));
 
-    RefPtr<GUI::Label> label = TRY(try_add<GUI::Label>("Track"));
+    RefPtr<GUI::Label> label = TRY(try_add<GUI::Label>("Track"_short_string));
     label->set_max_width(75);
 
     m_track_dropdown = TRY(try_add<GUI::ComboBox>());
diff --git a/Userland/Applications/Piano/ProcessorParameterWidget/ParameterWidget.cpp b/Userland/Applications/Piano/ProcessorParameterWidget/ParameterWidget.cpp
index 3d0c0d389b..16d7377b49 100644
--- a/Userland/Applications/Piano/ProcessorParameterWidget/ParameterWidget.cpp
+++ b/Userland/Applications/Piano/ProcessorParameterWidget/ParameterWidget.cpp
@@ -15,11 +15,11 @@ ProcessorParameterWidget::ProcessorParameterWidget(DSP::ProcessorParameter& raw_
     : m_parameter(raw_parameter)
 {
     set_layout<GUI::VerticalBoxLayout>();
-    m_label = add<GUI::Label>(raw_parameter.name().to_deprecated_string());
+    m_label = add<GUI::Label>(raw_parameter.name());
     switch (raw_parameter.type()) {
     case DSP::ParameterType::Range: {
         auto& parameter = static_cast<DSP::ProcessorRangeParameter&>(raw_parameter);
-        m_value_label = add<GUI::Label>(DeprecatedString::number(static_cast<double>(parameter.value())));
+        m_value_label = add<GUI::Label>(String::number(static_cast<double>(parameter.value())).release_value_but_fixme_should_propagate_errors());
         m_parameter_modifier = add<ProcessorParameterSlider>(Orientation::Vertical, parameter, m_value_label);
         break;
     }
diff --git a/Userland/Applications/Piano/ProcessorParameterWidget/Slider.cpp b/Userland/Applications/Piano/ProcessorParameterWidget/Slider.cpp
index 7882577826..120cf8dca4 100644
--- a/Userland/Applications/Piano/ProcessorParameterWidget/Slider.cpp
+++ b/Userland/Applications/Piano/ProcessorParameterWidget/Slider.cpp
@@ -28,7 +28,7 @@ ProcessorParameterSlider::ProcessorParameterSlider(Orientation orientation, DSP:
     }
     set_tooltip(m_parameter.name().to_deprecated_string());
     if (m_value_label != nullptr)
-        m_value_label->set_text(DeprecatedString::formatted("{:.2f}", static_cast<double>(m_parameter)));
+        m_value_label->set_text(String::formatted("{:.2f}", static_cast<double>(m_parameter)).release_value_but_fixme_should_propagate_errors());
 
     on_change = [this](auto raw_value) {
         if (m_currently_setting_from_ui)
@@ -43,13 +43,9 @@ ProcessorParameterSlider::ProcessorParameterSlider(Orientation orientation, DSP:
         m_parameter.set_value(real_value);
         if (m_value_label) {
             double value = static_cast<double>(m_parameter);
-            DeprecatedString label_text = DeprecatedString::formatted("{:.2f}", value);
-            // FIXME: This is a magic value; we know that with normal font sizes, the label will disappear starting from approximately this length.
-            //        Can we do this dynamically?
-            if (label_text.length() > 7)
-                m_value_label->set_text(DeprecatedString::formatted("{:.0f}", value));
-            else
-                m_value_label->set_text(label_text);
+            auto label_text = String::formatted("{:.2f}", value).release_value_but_fixme_should_propagate_errors();
+            m_value_label->set_autosize(true);
+            m_value_label->set_text(label_text);
         }
         m_currently_setting_from_ui = false;
     };
diff --git a/Userland/Applications/Piano/SamplerWidget.cpp b/Userland/Applications/Piano/SamplerWidget.cpp
index bfe7e4f779..74d0d9e9f7 100644
--- a/Userland/Applications/Piano/SamplerWidget.cpp
+++ b/Userland/Applications/Piano/SamplerWidget.cpp
@@ -56,11 +56,11 @@ SamplerWidget::SamplerWidget(TrackManager& track_manager)
         if (!open_path.has_value())
             return;
         // TODO: We don't actually load the sample.
-        m_recorded_sample_name->set_text(open_path.value());
+        m_recorded_sample_name->set_text(String::from_deprecated_string(open_path.value()).release_value_but_fixme_should_propagate_errors());
         m_wave_editor->update();
     };
 
-    m_recorded_sample_name = m_open_button_and_recorded_sample_name_container->add<GUI::Label>("No sample loaded");
+    m_recorded_sample_name = m_open_button_and_recorded_sample_name_container->add<GUI::Label>("No sample loaded"_string.release_value_but_fixme_should_propagate_errors());
     m_recorded_sample_name->set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     m_wave_editor = add<WaveEditor>(m_track_manager);
diff --git a/Userland/Applications/PixelPaint/CreateNewImageDialog.cpp b/Userland/Applications/PixelPaint/CreateNewImageDialog.cpp
index f837a5e0cf..628547639e 100644
--- a/Userland/Applications/PixelPaint/CreateNewImageDialog.cpp
+++ b/Userland/Applications/PixelPaint/CreateNewImageDialog.cpp
@@ -32,7 +32,7 @@ CreateNewImageDialog::CreateNewImageDialog(GUI::Window* parent_window)
 
     main_widget->set_layout<GUI::VerticalBoxLayout>(4);
 
-    auto& name_label = main_widget->add<GUI::Label>("Name:");
+    auto& name_label = main_widget->add<GUI::Label>("Name:"_short_string);
     name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     m_name_textbox = main_widget->add<GUI::TextBox>();
@@ -42,12 +42,12 @@ CreateNewImageDialog::CreateNewImageDialog(GUI::Window* parent_window)
     auto default_name = Config::read_string("PixelPaint"sv, "NewImage"sv, "Name"sv);
     m_name_textbox->set_text(default_name);
 
-    auto& width_label = main_widget->add<GUI::Label>("Width:");
+    auto& width_label = main_widget->add<GUI::Label>("Width:"_short_string);
     width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     auto& width_spinbox = main_widget->add<GUI::SpinBox>();
 
-    auto& height_label = main_widget->add<GUI::Label>("Height:");
+    auto& height_label = main_widget->add<GUI::Label>("Height:"_short_string);
     height_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     auto& height_spinbox = main_widget->add<GUI::SpinBox>();
@@ -80,7 +80,7 @@ CreateNewImageDialog::CreateNewImageDialog(GUI::Window* parent_window)
         return BackgroundIndex::Custom;
     }();
 
-    auto& background_label = main_widget->add<GUI::Label>("Background:");
+    auto& background_label = main_widget->add<GUI::Label>("Background:"_string.release_value_but_fixme_should_propagate_errors());
     background_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     auto& background_color_combo = main_widget->add<GUI::ComboBox>();
     auto& background_color_input = main_widget->add<GUI::ColorInput>();
diff --git a/Userland/Applications/PixelPaint/CreateNewLayerDialog.cpp b/Userland/Applications/PixelPaint/CreateNewLayerDialog.cpp
index 51cbeb6645..ccbe748a55 100644
--- a/Userland/Applications/PixelPaint/CreateNewLayerDialog.cpp
+++ b/Userland/Applications/PixelPaint/CreateNewLayerDialog.cpp
@@ -24,7 +24,7 @@ CreateNewLayerDialog::CreateNewLayerDialog(Gfx::IntSize suggested_size, GUI::Win
     main_widget->set_fill_with_background_color(true);
     main_widget->set_layout<GUI::VerticalBoxLayout>(4);
 
-    auto& name_label = main_widget->add<GUI::Label>("Name:");
+    auto& name_label = main_widget->add<GUI::Label>("Name:"_short_string);
     name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     m_name_textbox = main_widget->add<GUI::TextBox>();
@@ -34,12 +34,12 @@ CreateNewLayerDialog::CreateNewLayerDialog(Gfx::IntSize suggested_size, GUI::Win
         m_layer_name = m_name_textbox->text();
     };
 
-    auto& width_label = main_widget->add<GUI::Label>("Width:");
+    auto& width_label = main_widget->add<GUI::Label>("Width:"_short_string);
     width_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     auto& width_spinbox = main_widget->add<GUI::SpinBox>();
 
-    auto& height_label = main_widget->add<GUI::Label>("Height:");
+    auto& height_label = main_widget->add<GUI::Label>("Height:"_short_string);
     height_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
     auto& height_spinbox = main_widget->add<GUI::SpinBox>();
diff --git a/Userland/Applications/PixelPaint/FilterGallery.cpp b/Userland/Applications/PixelPaint/FilterGallery.cpp
index 264c8d5565..6a1eb84734 100644
--- a/Userland/Applications/PixelPaint/FilterGallery.cpp
+++ b/Userland/Applications/PixelPaint/FilterGallery.cpp
@@ -64,7 +64,7 @@ FilterGallery::FilterGallery(GUI::Window* parent_window, ImageEditor* editor)
 
         auto settings_widget_or_error = m_selected_filter->get_settings_widget();
         if (settings_widget_or_error.is_error()) {
-            m_error_label->set_text(DeprecatedString::formatted("Error creating settings: {}", settings_widget_or_error.error()));
+            m_error_label->set_text(String::formatted("Error creating settings: {}", settings_widget_or_error.error()).release_value_but_fixme_should_propagate_errors());
             m_selected_filter_config_widget = m_error_label;
         } else {
             m_selected_filter_config_widget = settings_widget_or_error.release_value();
diff --git a/Userland/Applications/PixelPaint/Filters/Bloom.cpp b/Userland/Applications/PixelPaint/Filters/Bloom.cpp
index 589c36b55f..eced484fd5 100644
--- a/Userland/Applications/PixelPaint/Filters/Bloom.cpp
+++ b/Userland/Applications/PixelPaint/Filters/Bloom.cpp
@@ -40,7 +40,7 @@ ErrorOr<RefPtr<GUI::Widget>> Bloom::get_settings_widget()
         auto settings_widget = TRY(GUI::Widget::try_create());
         TRY(settings_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
-        auto name_label = TRY(settings_widget->try_add<GUI::Label>("Bloom Filter"));
+        auto name_label = TRY(settings_widget->try_add<GUI::Label>(TRY("Bloom Filter"_string)));
         name_label->set_font_weight(Gfx::FontWeight::Bold);
         name_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         name_label->set_fixed_height(20);
@@ -49,7 +49,7 @@ ErrorOr<RefPtr<GUI::Widget>> Bloom::get_settings_widget()
         luma_lower_container->set_fixed_height(50);
         TRY(luma_lower_container->try_set_layout<GUI::VerticalBoxLayout>(GUI::Margins { 4, 0, 4, 0 }));
 
-        auto luma_lower_label = TRY(luma_lower_container->try_add<GUI::Label>("Luma lower bound:"));
+        auto luma_lower_label = TRY(luma_lower_container->try_add<GUI::Label>(TRY("Luma lower bound:"_string)));
         luma_lower_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         luma_lower_label->set_fixed_height(20);
 
@@ -65,7 +65,7 @@ ErrorOr<RefPtr<GUI::Widget>> Bloom::get_settings_widget()
         radius_container->set_fixed_height(50);
         TRY(radius_container->try_set_layout<GUI::VerticalBoxLayout>(GUI::Margins { 4, 0, 4, 0 }));
 
-        auto radius_label = TRY(radius_container->try_add<GUI::Label>("Blur Radius:"));
+        auto radius_label = TRY(radius_container->try_add<GUI::Label>(TRY("Blur Radius:"_string)));
         radius_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         radius_label->set_fixed_height(20);
 
diff --git a/Userland/Applications/PixelPaint/Filters/FastBoxBlur.cpp b/Userland/Applications/PixelPaint/Filters/FastBoxBlur.cpp
index 870163dbd6..efe44bb56a 100644
--- a/Userland/Applications/PixelPaint/Filters/FastBoxBlur.cpp
+++ b/Userland/Applications/PixelPaint/Filters/FastBoxBlur.cpp
@@ -42,7 +42,7 @@ ErrorOr<RefPtr<GUI::Widget>> FastBoxBlur::get_settings_widget()
         auto settings_widget = TRY(GUI::Widget::try_create());
         TRY(settings_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
-        auto name_label = TRY(settings_widget->try_add<GUI::Label>("Fast Box Blur Filter"));
+        auto name_label = TRY(settings_widget->try_add<GUI::Label>(TRY("Fast Box Blur Filter"_string)));
         name_label->set_font_weight(Gfx::FontWeight::Bold);
         name_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         name_label->set_fixed_height(10);
@@ -88,7 +88,7 @@ ErrorOr<RefPtr<GUI::Widget>> FastBoxBlur::get_settings_widget()
         m_radius_container->set_fixed_height(20);
         TRY(m_radius_container->try_set_layout<GUI::HorizontalBoxLayout>(GUI::Margins { 4, 0, 4, 0 }));
 
-        auto radius_label = TRY(m_radius_container->try_add<GUI::Label>("Radius:"));
+        auto radius_label = TRY(m_radius_container->try_add<GUI::Label>("Radius:"_short_string));
         radius_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         radius_label->set_fixed_size(50, 20);
 
@@ -109,7 +109,7 @@ ErrorOr<RefPtr<GUI::Widget>> FastBoxBlur::get_settings_widget()
         radius_x_container->set_fixed_height(20);
         radius_x_container->set_layout<GUI::HorizontalBoxLayout>();
 
-        auto radius_x_label = TRY(radius_x_container->try_add<GUI::Label>("Radius X:"));
+        auto radius_x_label = TRY(radius_x_container->try_add<GUI::Label>(TRY("Radius X:"_string)));
         radius_x_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         radius_x_label->set_fixed_size(50, 20);
 
@@ -125,7 +125,7 @@ ErrorOr<RefPtr<GUI::Widget>> FastBoxBlur::get_settings_widget()
         radius_y_container->set_fixed_height(20);
         TRY(radius_y_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto radius_y_label = TRY(radius_y_container->try_add<GUI::Label>("Radius Y:"));
+        auto radius_y_label = TRY(radius_y_container->try_add<GUI::Label>(TRY("Radius Y:"_string)));
         radius_y_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         radius_y_label->set_fixed_size(50, 20);
 
@@ -146,7 +146,7 @@ ErrorOr<RefPtr<GUI::Widget>> FastBoxBlur::get_settings_widget()
         angle_container->set_fixed_height(20);
         TRY(angle_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto angle_label = TRY(angle_container->try_add<GUI::Label>("Angle:"));
+        auto angle_label = TRY(angle_container->try_add<GUI::Label>("Angle:"_short_string));
         angle_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         angle_label->set_fixed_size(60, 20);
 
@@ -162,7 +162,7 @@ ErrorOr<RefPtr<GUI::Widget>> FastBoxBlur::get_settings_widget()
         magnitude_container->set_fixed_height(20);
         TRY(magnitude_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto magnitude_label = TRY(magnitude_container->try_add<GUI::Label>("Magnitude:"));
+        auto magnitude_label = TRY(magnitude_container->try_add<GUI::Label>(TRY("Magnitude:"_string)));
         magnitude_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         magnitude_label->set_fixed_size(60, 20);
 
diff --git a/Userland/Applications/PixelPaint/Filters/Filter.cpp b/Userland/Applications/PixelPaint/Filters/Filter.cpp
index e62424acfa..177ad5a03a 100644
--- a/Userland/Applications/PixelPaint/Filters/Filter.cpp
+++ b/Userland/Applications/PixelPaint/Filters/Filter.cpp
@@ -28,7 +28,7 @@ ErrorOr<RefPtr<GUI::Widget>> Filter::get_settings_widget()
         auto settings_widget = TRY(GUI::Widget::try_create());
         (void)TRY(settings_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
-        auto name_label = TRY(settings_widget->try_add<GUI::Label>(filter_name()));
+        auto name_label = TRY(settings_widget->try_add<GUI::Label>(TRY(String::from_utf8(filter_name()))));
         name_label->set_text_alignment(Gfx::TextAlignment::TopLeft);
 
         (void)TRY(settings_widget->try_add<GUI::Widget>());
diff --git a/Userland/Applications/PixelPaint/Filters/HueAndSaturation.cpp b/Userland/Applications/PixelPaint/Filters/HueAndSaturation.cpp
index 253ffb9525..b442715013 100644
--- a/Userland/Applications/PixelPaint/Filters/HueAndSaturation.cpp
+++ b/Userland/Applications/PixelPaint/Filters/HueAndSaturation.cpp
@@ -34,7 +34,7 @@ ErrorOr<RefPtr<GUI::Widget>> HueAndSaturation::get_settings_widget()
         (void)TRY(settings_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
         auto add_slider = [&](auto name, int min, int max, auto member) -> ErrorOr<void> {
-            auto name_label = TRY(settings_widget->try_add<GUI::Label>(name));
+            auto name_label = TRY(settings_widget->try_add<GUI::Label>(TRY(String::from_utf8(name))));
             name_label->set_font_weight(Gfx::FontWeight::Bold);
             name_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
             name_label->set_fixed_height(20);
@@ -49,9 +49,9 @@ ErrorOr<RefPtr<GUI::Widget>> HueAndSaturation::get_settings_widget()
             return {};
         };
 
-        TRY(add_slider("Hue", -180, 180, &HueAndSaturation::m_hue));
-        TRY(add_slider("Saturation", -100, 100, &HueAndSaturation::m_saturation));
-        TRY(add_slider("Lightness", -100, 100, &HueAndSaturation::m_lightness));
+        TRY(add_slider("Hue"sv, -180, 180, &HueAndSaturation::m_hue));
+        TRY(add_slider("Saturation"sv, -100, 100, &HueAndSaturation::m_saturation));
+        TRY(add_slider("Lightness"sv, -100, 100, &HueAndSaturation::m_lightness));
         m_settings_widget = settings_widget;
     }
 
diff --git a/Userland/Applications/PixelPaint/Filters/Sepia.cpp b/Userland/Applications/PixelPaint/Filters/Sepia.cpp
index 1755e8f96a..f736aa0f19 100644
--- a/Userland/Applications/PixelPaint/Filters/Sepia.cpp
+++ b/Userland/Applications/PixelPaint/Filters/Sepia.cpp
@@ -23,7 +23,7 @@ ErrorOr<RefPtr<GUI::Widget>> Sepia::get_settings_widget()
         auto settings_widget = TRY(GUI::Widget::try_create());
         TRY(settings_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
-        auto name_label = TRY(settings_widget->try_add<GUI::Label>("Sepia Filter"));
+        auto name_label = TRY(settings_widget->try_add<GUI::Label>(TRY("Sepia Filter"_string)));
         name_label->set_font_weight(Gfx::FontWeight::Bold);
         name_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         name_label->set_fixed_height(20);
@@ -32,7 +32,7 @@ ErrorOr<RefPtr<GUI::Widget>> Sepia::get_settings_widget()
         amount_container->set_fixed_height(20);
         TRY(amount_container->try_set_layout<GUI::HorizontalBoxLayout>(GUI::Margins { 4, 0, 4, 0 }));
 
-        auto amount_label = TRY(amount_container->try_add<GUI::Label>("Amount:"));
+        auto amount_label = TRY(amount_container->try_add<GUI::Label>("Amount:"_short_string));
         amount_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         amount_label->set_fixed_size(50, 20);
 
diff --git a/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp b/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp
index c9ba4f8137..fdd752f744 100644
--- a/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp
+++ b/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp
@@ -30,7 +30,7 @@ LayerPropertiesWidget::LayerPropertiesWidget()
     name_container.set_fixed_height(20);
     name_container.set_layout<GUI::HorizontalBoxLayout>();
 
-    auto& name_label = name_container.add<GUI::Label>("Name:");
+    auto& name_label = name_container.add<GUI::Label>("Name:"_short_string);
     name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     name_label.set_fixed_size(80, 20);
 
@@ -45,7 +45,7 @@ LayerPropertiesWidget::LayerPropertiesWidget()
     opacity_container.set_fixed_height(20);
     opacity_container.set_layout<GUI::HorizontalBoxLayout>();
 
-    auto& opacity_label = opacity_container.add<GUI::Label>("Opacity:");
+    auto& opacity_label = opacity_container.add<GUI::Label>("Opacity:"_string.release_value_but_fixme_should_propagate_errors());
     opacity_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     opacity_label.set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/LevelsDialog.cpp b/Userland/Applications/PixelPaint/LevelsDialog.cpp
index b7577a95e0..80b8b652c3 100644
--- a/Userland/Applications/PixelPaint/LevelsDialog.cpp
+++ b/Userland/Applications/PixelPaint/LevelsDialog.cpp
@@ -41,7 +41,7 @@ LevelsDialog::LevelsDialog(GUI::Window* parent_window, ImageEditor* editor)
     VERIFY(cancel_button);
     VERIFY(m_editor->active_layer());
 
-    context_label->set_text(DeprecatedString::formatted("Working on layer: {}", m_editor->active_layer()->name()));
+    context_label->set_text(String::formatted("Working on layer: {}", m_editor->active_layer()->name()).release_value_but_fixme_should_propagate_errors());
     m_gamma_slider->set_value(100);
 
     m_brightness_slider->on_change = [this](auto) {
diff --git a/Userland/Applications/PixelPaint/ToolPropertiesWidget.cpp b/Userland/Applications/PixelPaint/ToolPropertiesWidget.cpp
index 299ba1dda6..699a47eb75 100644
--- a/Userland/Applications/PixelPaint/ToolPropertiesWidget.cpp
+++ b/Userland/Applications/PixelPaint/ToolPropertiesWidget.cpp
@@ -36,7 +36,7 @@ void ToolPropertiesWidget::set_active_tool(Tool* tool)
     auto active_tool_widget_or_error = tool->get_properties_widget();
     if (active_tool_widget_or_error.is_error()) {
         m_active_tool_widget = nullptr;
-        m_error_label->set_text(DeprecatedString::formatted("Error creating tool properties: {}", active_tool_widget_or_error.release_error()));
+        m_error_label->set_text(String::formatted("Error creating tool properties: {}", active_tool_widget_or_error.release_error()).release_value_but_fixme_should_propagate_errors());
         m_tool_widget_stack->set_active_widget(m_error_label);
         return;
     }
diff --git a/Userland/Applications/PixelPaint/Tools/BrushTool.cpp b/Userland/Applications/PixelPaint/Tools/BrushTool.cpp
index 383963c14b..3fe39457e3 100644
--- a/Userland/Applications/PixelPaint/Tools/BrushTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/BrushTool.cpp
@@ -147,7 +147,7 @@ ErrorOr<GUI::Widget*> BrushTool::get_properties_widget()
         size_container->set_fixed_height(20);
         (void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"));
+        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"_short_string));
         size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         size_label->set_fixed_size(80, 20);
 
@@ -167,7 +167,7 @@ ErrorOr<GUI::Widget*> BrushTool::get_properties_widget()
         hardness_container->set_fixed_height(20);
         (void)TRY(hardness_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>("Hardness:"));
+        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>(TRY("Hardness:"_string)));
         hardness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         hardness_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/BucketTool.cpp b/Userland/Applications/PixelPaint/Tools/BucketTool.cpp
index 39e6a83f0c..80e4af0799 100644
--- a/Userland/Applications/PixelPaint/Tools/BucketTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/BucketTool.cpp
@@ -71,7 +71,7 @@ ErrorOr<GUI::Widget*> BucketTool::get_properties_widget()
         threshold_container->set_fixed_height(20);
         (void)TRY(threshold_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto threshold_label = TRY(threshold_container->try_add<GUI::Label>("Threshold:"));
+        auto threshold_label = TRY(threshold_container->try_add<GUI::Label>(TRY("Threshold:"_string)));
         threshold_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         threshold_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/CloneTool.cpp b/Userland/Applications/PixelPaint/Tools/CloneTool.cpp
index d7a7e8f71e..2a858fcc61 100644
--- a/Userland/Applications/PixelPaint/Tools/CloneTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/CloneTool.cpp
@@ -135,7 +135,7 @@ ErrorOr<GUI::Widget*> CloneTool::get_properties_widget()
         size_container->set_fixed_height(20);
         (void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"));
+        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"_short_string));
         size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         size_label->set_fixed_size(80, 20);
 
@@ -154,7 +154,7 @@ ErrorOr<GUI::Widget*> CloneTool::get_properties_widget()
         hardness_container->set_fixed_height(20);
         (void)TRY(hardness_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>("Hardness:"));
+        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>(TRY("Hardness:"_string)));
         hardness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         hardness_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/EllipseTool.cpp b/Userland/Applications/PixelPaint/Tools/EllipseTool.cpp
index a1140171fe..759cf6fb32 100644
--- a/Userland/Applications/PixelPaint/Tools/EllipseTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/EllipseTool.cpp
@@ -136,7 +136,7 @@ ErrorOr<GUI::Widget*> EllipseTool::get_properties_widget()
         thickness_container->set_fixed_height(20);
         (void)TRY(thickness_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto thickness_label = TRY(thickness_container->try_add<GUI::Label>("Thickness:"));
+        auto thickness_label = TRY(thickness_container->try_add<GUI::Label>(TRY("Thickness:"_string)));
         thickness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         thickness_label->set_fixed_size(80, 20);
 
@@ -152,7 +152,7 @@ ErrorOr<GUI::Widget*> EllipseTool::get_properties_widget()
         auto mode_container = TRY(properties_widget->try_add<GUI::Widget>());
         mode_container->set_fixed_height(70);
         (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
-        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Mode:"));
+        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Mode:"_short_string));
         mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
         auto mode_radio_container = TRY(mode_container->try_add<GUI::Widget>());
@@ -180,7 +180,7 @@ ErrorOr<GUI::Widget*> EllipseTool::get_properties_widget()
         aspect_container->set_fixed_height(20);
         (void)TRY(aspect_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto aspect_label = TRY(aspect_container->try_add<GUI::Label>("Aspect Ratio:"));
+        auto aspect_label = TRY(aspect_container->try_add<GUI::Label>(TRY("Aspect Ratio:"_string)));
         aspect_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         aspect_label->set_fixed_size(80, 20);
 
@@ -197,7 +197,7 @@ ErrorOr<GUI::Widget*> EllipseTool::get_properties_widget()
             }
         };
 
-        auto multiply_label = TRY(aspect_container->try_add<GUI::Label>("x"));
+        auto multiply_label = TRY(aspect_container->try_add<GUI::Label>("x"_short_string));
         multiply_label->set_text_alignment(Gfx::TextAlignment::Center);
         multiply_label->set_fixed_size(10, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/EraseTool.cpp b/Userland/Applications/PixelPaint/Tools/EraseTool.cpp
index 46c432f479..924912b504 100644
--- a/Userland/Applications/PixelPaint/Tools/EraseTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/EraseTool.cpp
@@ -63,7 +63,7 @@ ErrorOr<GUI::Widget*> EraseTool::get_properties_widget()
         size_container->set_fixed_height(20);
         (void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"));
+        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"_short_string));
         size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         size_label->set_fixed_size(80, 20);
 
@@ -81,7 +81,7 @@ ErrorOr<GUI::Widget*> EraseTool::get_properties_widget()
         hardness_container->set_fixed_height(20);
         (void)TRY(hardness_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>("Hardness:"));
+        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>(TRY("Hardness:"_string)));
         hardness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         hardness_label->set_fixed_size(80, 20);
 
@@ -108,7 +108,7 @@ ErrorOr<GUI::Widget*> EraseTool::get_properties_widget()
         auto mode_container = TRY(properties_widget->try_add<GUI::Widget>());
         mode_container->set_fixed_height(46);
         (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
-        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Draw Mode:"));
+        auto mode_label = TRY(mode_container->try_add<GUI::Label>(TRY("Draw Mode:"_string)));
         mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         mode_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/GradientTool.cpp b/Userland/Applications/PixelPaint/Tools/GradientTool.cpp
index e43cd28d13..24f2307d84 100644
--- a/Userland/Applications/PixelPaint/Tools/GradientTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/GradientTool.cpp
@@ -206,7 +206,7 @@ ErrorOr<GUI::Widget*> GradientTool::get_properties_widget()
         auto mode_container = TRY(properties_widget->try_add<GUI::Widget>());
         mode_container->set_fixed_height(20);
         (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
-        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Gradient Type:"));
+        auto mode_label = TRY(mode_container->try_add<GUI::Label>(TRY("Gradient Type:"_string)));
         mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         mode_label->set_fixed_size(80, 20);
 
@@ -236,7 +236,7 @@ ErrorOr<GUI::Widget*> GradientTool::get_properties_widget()
         size_container->set_fixed_height(20);
         (void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto size_label = TRY(size_container->try_add<GUI::Label>("Opacity:"));
+        auto size_label = TRY(size_container->try_add<GUI::Label>(TRY("Opacity:"_string)));
         size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         size_label->set_fixed_size(80, 20);
 
@@ -270,7 +270,7 @@ ErrorOr<GUI::Widget*> GradientTool::get_properties_widget()
             hardness_container->set_visible(m_mode == GradientMode::Radial);
         };
 
-        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>("Hardness:"));
+        auto hardness_label = TRY(hardness_container->try_add<GUI::Label>(TRY("Hardness:"_string)));
         hardness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
         auto hardness_slider = TRY(hardness_container->try_add<GUI::HorizontalOpacitySlider>());
diff --git a/Userland/Applications/PixelPaint/Tools/GuideTool.cpp b/Userland/Applications/PixelPaint/Tools/GuideTool.cpp
index fcc45b42aa..88e2026f22 100644
--- a/Userland/Applications/PixelPaint/Tools/GuideTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/GuideTool.cpp
@@ -186,7 +186,7 @@ ErrorOr<GUI::Widget*> GuideTool::get_properties_widget()
         snapping_container->set_fixed_height(20);
         (void)TRY(snapping_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto snapping_label = TRY(snapping_container->try_add<GUI::Label>("Snap offset:"));
+        auto snapping_label = TRY(snapping_container->try_add<GUI::Label>(TRY("Snap offset:"_string)));
         snapping_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         snapping_label->set_fixed_size(80, 20);
         snapping_label->set_tooltip("Press Shift to snap");
diff --git a/Userland/Applications/PixelPaint/Tools/LassoSelectTool.cpp b/Userland/Applications/PixelPaint/Tools/LassoSelectTool.cpp
index b4e6243a6c..d1026145bc 100644
--- a/Userland/Applications/PixelPaint/Tools/LassoSelectTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/LassoSelectTool.cpp
@@ -185,7 +185,7 @@ ErrorOr<GUI::Widget*> LassoSelectTool::get_properties_widget()
     (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
     auto mode_label = TRY(mode_container->try_add<GUI::Label>());
-    mode_label->set_text("Mode:");
+    mode_label->set_text("Mode:"_short_string);
     mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     mode_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/LineTool.cpp b/Userland/Applications/PixelPaint/Tools/LineTool.cpp
index a6cfc85caa..a1d240c4c5 100644
--- a/Userland/Applications/PixelPaint/Tools/LineTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/LineTool.cpp
@@ -129,7 +129,7 @@ ErrorOr<GUI::Widget*> LineTool::get_properties_widget()
         thickness_container->set_fixed_height(20);
         (void)TRY(thickness_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto thickness_label = TRY(thickness_container->try_add<GUI::Label>("Thickness:"));
+        auto thickness_label = TRY(thickness_container->try_add<GUI::Label>(TRY("Thickness:"_string)));
         thickness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         thickness_label->set_fixed_size(80, 20);
 
@@ -146,7 +146,7 @@ ErrorOr<GUI::Widget*> LineTool::get_properties_widget()
         mode_container->set_fixed_height(20);
         (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Mode:"));
+        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Mode:"_short_string));
         mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         mode_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/MoveTool.cpp b/Userland/Applications/PixelPaint/Tools/MoveTool.cpp
index e473c95c39..56fe2117e2 100644
--- a/Userland/Applications/PixelPaint/Tools/MoveTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/MoveTool.cpp
@@ -298,7 +298,7 @@ ErrorOr<GUI::Widget*> MoveTool::get_properties_widget()
         auto selection_mode_container = TRY(properties_widget->try_add<GUI::Widget>());
         (void)TRY(selection_mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
         selection_mode_container->set_fixed_height(46);
-        auto selection_mode_label = TRY(selection_mode_container->try_add<GUI::Label>("Selection Mode:"));
+        auto selection_mode_label = TRY(selection_mode_container->try_add<GUI::Label>(TRY("Selection Mode:"_string)));
         selection_mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         selection_mode_label->set_fixed_size(80, 40);
 
diff --git a/Userland/Applications/PixelPaint/Tools/PenTool.cpp b/Userland/Applications/PixelPaint/Tools/PenTool.cpp
index b72c48ef73..dbb65e36c2 100644
--- a/Userland/Applications/PixelPaint/Tools/PenTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/PenTool.cpp
@@ -45,7 +45,7 @@ ErrorOr<GUI::Widget*> PenTool::get_properties_widget()
         size_container->set_fixed_height(20);
         (void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto size_label = TRY(size_container->try_add<GUI::Label>("Thickness:"));
+        auto size_label = TRY(size_container->try_add<GUI::Label>(TRY("Thickness:"_string)));
         size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         size_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/PolygonalSelectTool.cpp b/Userland/Applications/PixelPaint/Tools/PolygonalSelectTool.cpp
index 2f4a60aa4f..94063e422d 100644
--- a/Userland/Applications/PixelPaint/Tools/PolygonalSelectTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/PolygonalSelectTool.cpp
@@ -190,7 +190,7 @@ ErrorOr<GUI::Widget*> PolygonalSelectTool::get_properties_widget()
     (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
     auto mode_label = TRY(mode_container->try_add<GUI::Label>());
-    mode_label->set_text("Mode:");
+    mode_label->set_text("Mode:"_short_string);
     mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     mode_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/RectangleSelectTool.cpp b/Userland/Applications/PixelPaint/Tools/RectangleSelectTool.cpp
index f1bfc6c269..e8415b4cdf 100644
--- a/Userland/Applications/PixelPaint/Tools/RectangleSelectTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/RectangleSelectTool.cpp
@@ -161,7 +161,7 @@ ErrorOr<GUI::Widget*> RectangleSelectTool::get_properties_widget()
     (void)TRY(feather_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
     auto feather_label = TRY(feather_container->try_add<GUI::Label>());
-    feather_label->set_text("Feather:");
+    feather_label->set_text(TRY("Feather:"_string));
     feather_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     feather_label->set_fixed_size(80, 20);
 
@@ -180,7 +180,7 @@ ErrorOr<GUI::Widget*> RectangleSelectTool::get_properties_widget()
     (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
     auto mode_label = TRY(mode_container->try_add<GUI::Label>());
-    mode_label->set_text("Mode:");
+    mode_label->set_text("Mode:"_short_string);
     mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     mode_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/RectangleTool.cpp b/Userland/Applications/PixelPaint/Tools/RectangleTool.cpp
index f7987dd1dd..179ddab5c1 100644
--- a/Userland/Applications/PixelPaint/Tools/RectangleTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/RectangleTool.cpp
@@ -165,14 +165,14 @@ ErrorOr<GUI::Widget*> RectangleTool::get_properties_widget()
 
         auto update_slider = [this, thickness_or_radius_label, thickness_or_radius_slider] {
             auto update_values = [&](auto label, int value, int range_min, int range_max = 10) {
-                thickness_or_radius_label->set_text(label);
+                thickness_or_radius_label->set_text(String::from_utf8(label).release_value_but_fixme_should_propagate_errors());
                 thickness_or_radius_slider->set_range(range_min, range_max);
                 thickness_or_radius_slider->set_value(value);
             };
             if (m_fill_mode == FillMode::RoundedCorners)
-                update_values("Radius:", m_corner_radius, 0, 50);
+                update_values("Radius:"sv, m_corner_radius, 0, 50);
             else
-                update_values("Thickness:", m_thickness, 1);
+                update_values("Thickness:"sv, m_thickness, 1);
         };
 
         update_slider();
@@ -181,7 +181,7 @@ ErrorOr<GUI::Widget*> RectangleTool::get_properties_widget()
         auto mode_container = TRY(properties_widget->try_add<GUI::Widget>());
         mode_container->set_fixed_height(90);
         (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
-        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Mode:"));
+        auto mode_label = TRY(mode_container->try_add<GUI::Label>("Mode:"_short_string));
         mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         mode_label->set_fixed_size(30, 20);
 
@@ -225,7 +225,7 @@ ErrorOr<GUI::Widget*> RectangleTool::get_properties_widget()
         (void)TRY(aspect_container->try_set_layout<GUI::VerticalBoxLayout>());
         aspect_container->set_fixed_width(75);
 
-        auto aspect_label = TRY(aspect_container->try_add<GUI::Label>("Aspect Ratio:"));
+        auto aspect_label = TRY(aspect_container->try_add<GUI::Label>(TRY("Aspect Ratio:"_string)));
         aspect_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         aspect_label->set_fixed_size(75, 20);
 
@@ -246,7 +246,7 @@ ErrorOr<GUI::Widget*> RectangleTool::get_properties_widget()
             }
         };
 
-        auto multiply_label = TRY(aspect_fields_container->try_add<GUI::Label>("x"));
+        auto multiply_label = TRY(aspect_fields_container->try_add<GUI::Label>("x"_short_string));
         multiply_label->set_text_alignment(Gfx::TextAlignment::Center);
         multiply_label->set_fixed_size(10, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/SprayTool.cpp b/Userland/Applications/PixelPaint/Tools/SprayTool.cpp
index c56185e781..f249a4f736 100644
--- a/Userland/Applications/PixelPaint/Tools/SprayTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/SprayTool.cpp
@@ -100,7 +100,7 @@ ErrorOr<GUI::Widget*> SprayTool::get_properties_widget()
         size_container->set_fixed_height(20);
         (void)TRY(size_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"));
+        auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"_short_string));
         size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         size_label->set_fixed_size(80, 20);
 
@@ -117,7 +117,7 @@ ErrorOr<GUI::Widget*> SprayTool::get_properties_widget()
         density_container->set_fixed_height(20);
         (void)TRY(density_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto density_label = TRY(density_container->try_add<GUI::Label>("Density:"));
+        auto density_label = TRY(density_container->try_add<GUI::Label>(TRY("Density:"_string)));
         density_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         density_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/TextTool.cpp b/Userland/Applications/PixelPaint/Tools/TextTool.cpp
index 25484f3951..09be4adfcb 100644
--- a/Userland/Applications/PixelPaint/Tools/TextTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/TextTool.cpp
@@ -111,16 +111,16 @@ ErrorOr<GUI::Widget*> TextTool::get_properties_widget()
     auto properties_widget = TRY(GUI::Widget::try_create());
     (void)TRY(properties_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
-    auto font_header = TRY(properties_widget->try_add<GUI::Label>("Current Font:"));
+    auto font_header = TRY(properties_widget->try_add<GUI::Label>(TRY("Current Font:"_string)));
     font_header->set_text_alignment(Gfx::TextAlignment::CenterLeft);
 
-    m_font_label = TRY(properties_widget->try_add<GUI::Label>(m_selected_font->human_readable_name()));
+    m_font_label = TRY(properties_widget->try_add<GUI::Label>(TRY(String::from_deprecated_string(m_selected_font->human_readable_name()))));
 
     auto change_font_button = TRY(properties_widget->try_add<GUI::Button>(TRY("Change Font..."_string)));
     change_font_button->on_click = [this](auto) {
         auto picker = GUI::FontPicker::construct(nullptr, m_selected_font, false);
         if (picker->exec() == GUI::Dialog::ExecResult::OK) {
-            m_font_label->set_text(picker->font()->human_readable_name());
+            m_font_label->set_text(String::from_deprecated_string(picker->font()->human_readable_name()).release_value_but_fixme_should_propagate_errors());
             m_selected_font = picker->font();
             m_text_editor->set_font(m_selected_font);
             m_editor->set_focus(true);
diff --git a/Userland/Applications/PixelPaint/Tools/WandSelectTool.cpp b/Userland/Applications/PixelPaint/Tools/WandSelectTool.cpp
index c7fe74a2fc..c00144c294 100644
--- a/Userland/Applications/PixelPaint/Tools/WandSelectTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/WandSelectTool.cpp
@@ -77,7 +77,7 @@ ErrorOr<GUI::Widget*> WandSelectTool::get_properties_widget()
     threshold_container->set_fixed_height(20);
     (void)TRY(threshold_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-    auto threshold_label = TRY(threshold_container->try_add<GUI::Label>("Threshold:"));
+    auto threshold_label = TRY(threshold_container->try_add<GUI::Label>(TRY("Threshold:"_string)));
     threshold_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     threshold_label->set_fixed_size(80, 20);
 
@@ -95,7 +95,7 @@ ErrorOr<GUI::Widget*> WandSelectTool::get_properties_widget()
     (void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
     auto mode_label = TRY(mode_container->try_add<GUI::Label>());
-    mode_label->set_text("Mode:");
+    mode_label->set_text("Mode:"_short_string);
     mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
     mode_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/PixelPaint/Tools/ZoomTool.cpp b/Userland/Applications/PixelPaint/Tools/ZoomTool.cpp
index dc61602174..83c29511b2 100644
--- a/Userland/Applications/PixelPaint/Tools/ZoomTool.cpp
+++ b/Userland/Applications/PixelPaint/Tools/ZoomTool.cpp
@@ -33,7 +33,7 @@ ErrorOr<GUI::Widget*> ZoomTool::get_properties_widget()
         sensitivity_container->set_fixed_height(20);
         (void)TRY(sensitivity_container->try_set_layout<GUI::HorizontalBoxLayout>());
 
-        auto sensitivity_label = TRY(sensitivity_container->try_add<GUI::Label>("Sensitivity:"));
+        auto sensitivity_label = TRY(sensitivity_container->try_add<GUI::Label>(TRY("Sensitivity:"_string)));
         sensitivity_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
         sensitivity_label->set_fixed_size(80, 20);
 
diff --git a/Userland/Applications/SoundPlayer/SoundPlayerWidgetAdvancedView.cpp b/Userland/Applications/SoundPlayer/SoundPlayerWidgetAdvancedView.cpp
index dad1e03cb9..7d63df2a93 100644
--- a/Userland/Applications/SoundPlayer/SoundPlayerWidgetAdvancedView.cpp
+++ b/Userland/Applications/SoundPlayer/SoundPlayerWidgetAdvancedView.cpp
@@ -239,7 +239,7 @@ void SoundPlayerWidgetAdvancedView::shuffle_mode_changed(Player::ShuffleMode)
 
 void SoundPlayerWidgetAdvancedView::time_elapsed(int seconds)
 {
-    m_timestamp_label->set_text(DeprecatedString::formatted("Elapsed: {:02}:{:02}:{:02}", seconds / 3600, seconds / 60, seconds % 60));
+    m_timestamp_label->set_text(String::formatted("Elapsed: {:02}:{:02}:{:02}", seconds / 3600, seconds / 60, seconds % 60).release_value_but_fixme_should_propagate_errors());
 }
 
 void SoundPlayerWidgetAdvancedView::file_name_changed(StringView name)
@@ -275,7 +275,7 @@ void SoundPlayerWidgetAdvancedView::sound_buffer_played(FixedArray<Audio::Sample
 
 void SoundPlayerWidgetAdvancedView::volume_changed(double volume)
 {
-    m_volume_label->set_text(DeprecatedString::formatted("{}%", static_cast<int>(volume * 100)));
+    m_volume_label->set_text(String::formatted("{}%", static_cast<int>(volume * 100)).release_value_but_fixme_should_propagate_errors());
 }
 
 void SoundPlayerWidgetAdvancedView::playlist_loaded(StringView path, bool loaded)
diff --git a/Userland/Applications/SpaceAnalyzer/ProgressWindow.cpp b/Userland/Applications/SpaceAnalyzer/ProgressWindow.cpp
index 01b2b08b22..e9e5ac83ba 100644
--- a/Userland/Applications/SpaceAnalyzer/ProgressWindow.cpp
+++ b/Userland/Applications/SpaceAnalyzer/ProgressWindow.cpp
@@ -18,7 +18,7 @@ ErrorOr<NonnullRefPtr<ProgressWindow>> ProgressWindow::try_create(StringView tit
     main_widget->set_fill_with_background_color(true);
     TRY(main_widget->try_set_layout<GUI::VerticalBoxLayout>());
 
-    auto label = TRY(main_widget->try_add<GUI::Label>("Analyzing storage space..."));
+    auto label = TRY(main_widget->try_add<GUI::Label>(TRY("Analyzing storage space..."_string)));
     label->set_fixed_height(22);
 
     window->m_progress_label = TRY(main_widget->try_add<GUI::Label>());
@@ -42,7 +42,7 @@ ProgressWindow::~ProgressWindow() = default;
 
 void ProgressWindow::update_progress_label(size_t files_encountered_count)
 {
-    m_progress_label->set_text(DeprecatedString::formatted("{} files...", files_encountered_count));
+    m_progress_label->set_text(String::formatted("{} files...", files_encountered_count).release_value_but_fixme_should_propagate_errors());
     // FIXME: Why is this necessary to make the window repaint?
     Core::EventLoop::current().pump(Core::EventLoop::WaitMode::PollForEvents);
 }
diff --git a/Userland/Applications/Spreadsheet/CellTypeDialog.cpp b/Userland/Applications/Spreadsheet/CellTypeDialog.cpp
index 90093fa841..59c516eb9a 100644
--- a/Userland/Applications/Spreadsheet/CellTypeDialog.cpp
+++ b/Userland/Applications/Spreadsheet/CellTypeDialog.cpp
@@ -209,7 +209,7 @@ void CellTypeDialog::setup_tabs(GUI::TabWidget& tabs, Vector<Position> const& po
 
             auto& horizontal_alignment_label = horizontal_alignment_selection_container.add<GUI::Label>();
             horizontal_alignment_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-            horizontal_alignment_label.set_text("Horizontal text alignment");
+            horizontal_alignment_label.set_text("Horizontal text alignment"_string.release_value_but_fixme_should_propagate_errors());
 
             auto& horizontal_combobox = alignment_tab.add<GUI::ComboBox>();
             horizontal_combobox.set_only_allow_values_from_model(true);
@@ -240,7 +240,7 @@ void CellTypeDialog::setup_tabs(GUI::TabWidget& tabs, Vector<Position> const& po
 
             auto& vertical_alignment_label = vertical_alignment_container.add<GUI::Label>();
             vertical_alignment_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-            vertical_alignment_label.set_text("Vertical text alignment");
+            vertical_alignment_label.set_text("Vertical text alignment"_string.release_value_but_fixme_should_propagate_errors());
 
             auto& vertical_combobox = alignment_tab.add<GUI::ComboBox>();
             vertical_combobox.set_only_allow_values_from_model(true);
@@ -281,7 +281,7 @@ void CellTypeDialog::setup_tabs(GUI::TabWidget& tabs, Vector<Position> const& po
 
                 auto& foreground_label = foreground_container.add<GUI::Label>();
                 foreground_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-                foreground_label.set_text("Static foreground color");
+                foreground_label.set_text("Static foreground color"_string.release_value_but_fixme_should_propagate_errors());
 
                 auto& foreground_selector = foreground_container.add<GUI::ColorInput>();
                 if (m_static_format.foreground_color.has_value())
@@ -300,7 +300,7 @@ void CellTypeDialog::setup_tabs(GUI::TabWidget& tabs, Vector<Position> const& po
 
                 auto& background_label = background_container.add<GUI::Label>();
                 background_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
-                background_label.set_text("Static background color");
+                background_label.set_text("Static background color"_string.release_value_but_fixme_should_propagate_errors());
 
                 auto& background_selector = background_container.add<GUI::ColorInput>();
                 if (m_static_format.background_color.has_value())
diff --git a/Userland/Applications/Spreadsheet/ImportDialog.cpp b/Userland/Applications/Spreadsheet/ImportDialog.cpp
index 55a00335bc..7b07765403 100644
--- a/Userland/Applications/Spreadsheet/ImportDialog.cpp
+++ b/Userland/Applications/Spreadsheet/ImportDialog.cpp
@@ -153,7 +153,7 @@ void CSVImportDialogPage::update_preview()
     m_previously_made_reader = make_reader();
     if (!m_previously_made_reader.has_value()) {
         m_data_preview_table_view->set_model(nullptr);
-        m_data_preview_error_label->set_text("Could not read the given file");
+        m_data_preview_error_label->set_text("Could not read the given file"_string.release_value_but_fixme_should_propagate_errors());
         m_data_preview_widget->set_active_widget(m_data_preview_error_label);
         return;
     }
@@ -161,7 +161,7 @@ void CSVImportDialogPage::update_preview()
     auto& reader = *m_previously_made_reader;
     if (reader.has_error()) {
         m_data_preview_table_view->set_model(nullptr);
-        m_data_preview_error_label->set_text(DeprecatedString::formatted("XSV parse error:\n{}", reader.error_string()));
+        m_data_preview_error_label->set_text(String::formatted("XSV parse error:\n{}", reader.error_string()).release_value_but_fixme_should_propagate_errors());
         m_data_preview_widget->set_active_widget(m_data_preview_error_label);
         return;
     }
diff --git a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
index 717ff58c1b..76edfaec2d 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
+++ b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
@@ -41,7 +41,7 @@ SpreadsheetWidget::SpreadsheetWidget(GUI::Window& parent_window, Vector<NonnullR
     auto& top_bar = container.add<GUI::Frame>();
     top_bar.set_layout<GUI::HorizontalBoxLayout>(GUI::Margins {}, 1);
     top_bar.set_preferred_height(26);
-    auto& current_cell_label = top_bar.add<GUI::Label>("");
+    auto& current_cell_label = top_bar.add<GUI::Label>();
     current_cell_label.set_fixed_width(50);
 
     auto& help_button = top_bar.add<GUI::Button>();
@@ -361,7 +361,7 @@ void SpreadsheetWidget::setup_tabs(Vector<NonnullRefPtr<Sheet>> new_sheets)
 
             if (selection.size() == 1) {
                 auto& position = selection.first();
-                m_current_cell_label->set_text(position.to_cell_identifier(sheet));
+                m_current_cell_label->set_text(String::from_deprecated_string(position.to_cell_identifier(sheet)).release_value_but_fixme_should_propagate_errors());
 
                 auto& cell = sheet.ensure(position);
                 m_cell_value_editor->on_change = nullptr;
@@ -382,7 +382,7 @@ void SpreadsheetWidget::setup_tabs(Vector<NonnullRefPtr<Sheet>> new_sheets)
             // There are many cells selected, change all of them.
             StringBuilder builder;
             builder.appendff("<{}>", selection.size());
-            m_current_cell_label->set_text(builder.string_view());
+            m_current_cell_label->set_text(builder.to_string().release_value_but_fixme_should_propagate_errors());
 
             Vector<Cell&> cells;
             for (auto& position : selection)
@@ -456,7 +456,7 @@ void SpreadsheetWidget::try_generate_tip_for_input_expression(StringView source,
     if (text.is_empty()) {
         m_inline_documentation_window->hide();
     } else {
-        m_inline_documentation_label->set_text(move(text));
+        m_inline_documentation_label->set_text(String::from_deprecated_string(text).release_value_but_fixme_should_propagate_errors());
         m_inline_documentation_window->show();
     }
 }
@@ -524,7 +524,7 @@ void SpreadsheetWidget::load_file(String const& filename, Core::File& file)
     }
 
     m_cell_value_editor->on_change = nullptr;
-    m_current_cell_label->set_text("");
+    m_current_cell_label->set_text({});
     m_should_change_selected_cells = false;
     while (auto* widget = m_tab_widget->active_widget()) {
         m_tab_widget->remove_tab(*widget);
@@ -549,7 +549,7 @@ void SpreadsheetWidget::import_sheets(String const& filename, Core::File& file)
     window()->set_modified(true);
 
     m_cell_value_editor->on_change = nullptr;
-    m_current_cell_label->set_text("");
+    m_current_cell_label->set_text({});
     m_should_change_selected_cells = false;
     while (auto* widget = m_tab_widget->active_widget()) {
         m_tab_widget->remove_tab(*widget);
diff --git a/Userland/Applications/SystemMonitor/MemoryStatsWidget.cpp b/Userland/Applications/SystemMonitor/MemoryStatsWidget.cpp
index e1543c0cbf..75e9229f54 100644
--- a/Userland/Applications/SystemMonitor/MemoryStatsWidget.cpp
+++ b/Userland/Applications/SystemMonitor/MemoryStatsWidget.cpp
@@ -45,7 +45,7 @@ MemoryStatsWidget::MemoryStatsWidget(GraphWidget* graph)
 
     set_layout<GUI::VerticalBoxLayout>(GUI::Margins { 8, 0, 0 }, 3);
 
-    auto build_widgets_for_label = [this](DeprecatedString const& description) -> RefPtr<GUI::Label> {
+    auto build_widgets_for_label = [this](String const& description) -> RefPtr<GUI::Label> {
         auto& container = add<GUI::Widget>();
         container.set_layout<GUI::HorizontalBoxLayout>();
         container.set_fixed_size(275, 12);
@@ -57,12 +57,12 @@ MemoryStatsWidget::MemoryStatsWidget(GraphWidget* graph)
         return label;
     };
 
-    m_physical_pages_label = build_widgets_for_label("Physical memory:");
-    m_physical_pages_committed_label = build_widgets_for_label("Committed memory:");
-    m_kmalloc_space_label = build_widgets_for_label("Kernel heap:");
-    m_kmalloc_count_label = build_widgets_for_label("Calls kmalloc:");
-    m_kfree_count_label = build_widgets_for_label("Calls kfree:");
-    m_kmalloc_difference_label = build_widgets_for_label("Difference:");
+    m_physical_pages_label = build_widgets_for_label("Physical memory:"_string.release_value_but_fixme_should_propagate_errors());
+    m_physical_pages_committed_label = build_widgets_for_label("Committed memory:"_string.release_value_but_fixme_should_propagate_errors());
+    m_kmalloc_space_label = build_widgets_for_label("Kernel heap:"_string.release_value_but_fixme_should_propagate_errors());
+    m_kmalloc_count_label = build_widgets_for_label("Calls kmalloc:"_string.release_value_but_fixme_should_propagate_errors());
+    m_kfree_count_label = build_widgets_for_label("Calls kfree:"_string.release_value_but_fixme_should_propagate_errors());
+    m_kmalloc_difference_label = build_widgets_for_label("Difference:"_string.release_value_but_fixme_should_propagate_errors());
 
     refresh();
 }
@@ -125,12 +125,12 @@ void MemoryStatsWidget::refresh()
     u64 physical_pages_in_use = physical_allocated;
     u64 total_userphysical_and_swappable_pages = physical_allocated + physical_committed + physical_uncommitted;
 
-    m_kmalloc_space_label->set_text(DeprecatedString::formatted("{}/{}", human_readable_size(kmalloc_allocated), human_readable_size(kmalloc_bytes_total)));
-    m_physical_pages_label->set_text(DeprecatedString::formatted("{}/{}", human_readable_size(page_count_to_bytes(physical_pages_in_use)), human_readable_size(page_count_to_bytes(physical_pages_total))));
-    m_physical_pages_committed_label->set_text(DeprecatedString::formatted("{}", human_readable_size(page_count_to_bytes(physical_committed))));
-    m_kmalloc_count_label->set_text(DeprecatedString::formatted("{}", kmalloc_call_count));
-    m_kfree_count_label->set_text(DeprecatedString::formatted("{}", kfree_call_count));
-    m_kmalloc_difference_label->set_text(DeprecatedString::formatted("{:+}", kmalloc_call_count - kfree_call_count));
+    m_kmalloc_space_label->set_text(String::formatted("{}/{}", human_readable_size(kmalloc_allocated), human_readable_size(kmalloc_bytes_total)).release_value_but_fixme_should_propagate_errors());
+    m_physical_pages_label->set_text(String::formatted("{}/{}", human_readable_size(page_count_to_bytes(physical_pages_in_use)), human_readable_size(page_count_to_bytes(physical_pages_total))).release_value_but_fixme_should_propagate_errors());
+    m_physical_pages_committed_label->set_text(String::formatted("{}", human_readable_size(page_count_to_bytes(physical_committed))).release_value_but_fixme_should_propagate_errors());
+    m_kmalloc_count_label->set_text(String::formatted("{}", kmalloc_call_count).release_value_but_fixme_should_propagate_errors());
+    m_kfree_count_label->set_text(String::formatted("{}", kfree_call_count).release_value_but_fixme_should_propagate_errors());
+    m_kmalloc_difference_label->set_text(String::formatted("{:+}", kmalloc_call_count - kfree_call_count).release_value_but_fixme_should_propagate_errors());
 
     // Because the initialization order of us and the graph is unknown, we might get a couple of updates where the graph widget lookup fails.
     // Therefore, we can retry indefinitely. (Should not be too much of a performance hit, as we don't update that often.)
diff --git a/Userland/Applications/SystemMonitor/main.cpp b/Userland/Applications/SystemMonitor/main.cpp
index 96ae7a36c2..8ffe417bc9 100644
--- a/Userland/Applications/SystemMonitor/main.cpp
+++ b/Userland/Applications/SystemMonitor/main.cpp
@@ -542,7 +542,7 @@ ErrorOr<NonnullRefPtr<GUI::Window>> build_process_window(pid_t pid)
         main_widget->find_descendant_of_type_named<GUI::Label>("icon_label")->set_icon(icon_data.as_icon().bitmap_for_size(32));
     }
 
-    main_widget->find_descendant_of_type_named<GUI::Label>("process_name")->set_text(DeprecatedString::formatted("{} (PID {})", process_index.sibling_at_column(ProcessModel::Column::Name).data().to_deprecated_string(), pid));
+    main_widget->find_descendant_of_type_named<GUI::Label>("process_name")->set_text(String::formatted("{} (PID {})", process_index.sibling_at_column(ProcessModel::Column::Name).data().to_deprecated_string(), pid).release_value_but_fixme_should_propagate_errors());
 
     main_widget->find_descendant_of_type_named<SystemMonitor::ProcessStateWidget>("process_state")->set_pid(pid);
     main_widget->find_descendant_of_type_named<SystemMonitor::ProcessFileDescriptorMapWidget>("open_files")->set_pid(pid);
diff --git a/Userland/Applications/TerminalSettings/TerminalSettingsWidget.cpp b/Userland/Applications/TerminalSettings/TerminalSettingsWidget.cpp
index df005586b1..5ef088abf1 100644
--- a/Userland/Applications/TerminalSettings/TerminalSettingsWidget.cpp
+++ b/Userland/Applications/TerminalSettings/TerminalSettingsWidget.cpp
@@ -101,13 +101,13 @@ TerminalSettingsViewWidget::TerminalSettingsViewWidget()
     else
         m_font = Gfx::FontDatabase::the().get_by_name(font_name);
     m_original_font = m_font;
-    font_text.set_text(m_font->human_readable_name());
+    font_text.set_text(String::from_deprecated_string(m_font->human_readable_name()).release_value_but_fixme_should_propagate_errors());
     font_text.set_font(m_font);
     font_button.on_click = [&](auto) {
         auto picker = GUI::FontPicker::construct(window(), m_font.ptr(), true);
         if (picker->exec() == GUI::Dialog::ExecResult::OK) {
             m_font = picker->font();
-            font_text.set_text(m_font->human_readable_name());
+            font_text.set_text(String::from_deprecated_string(m_font->human_readable_name()).release_value_but_fixme_should_propagate_errors());
             font_text.set_font(m_font);
             Config::write_string("Terminal"sv, "Text"sv, "Font"sv, m_font->qualified_name());
             set_modified(true);
@@ -120,7 +120,7 @@ TerminalSettingsViewWidget::TerminalSettingsViewWidget()
         if (use_default_font) {
             font_selection.set_enabled(false);
             m_font = Gfx::FontDatabase::the().default_fixed_width_font();
-            font_text.set_text(m_font->human_readable_name());
+            font_text.set_text(String::from_deprecated_string(m_font->human_readable_name()).release_value_but_fixme_should_propagate_errors());
             font_text.set_font(m_font);
             Config::write_string("Terminal"sv, "Text"sv, "Font"sv, m_font->qualified_name());
         } else {
diff --git a/Userland/Applications/ThemeEditor/MainWidget.cpp b/Userland/Applications/ThemeEditor/MainWidget.cpp
index fe7df40623..a721bfc6b7 100644
--- a/Userland/Applications/ThemeEditor/MainWidget.cpp
+++ b/Userland/Applications/ThemeEditor/MainWidget.cpp
@@ -456,7 +456,7 @@ ErrorOr<void> MainWidget::add_property_tab(PropertyTab const& property_tab)
                     TRY(row_widget->load_from_gml(alignment_property_gml));
 
                     auto& name_label = *row_widget->find_descendant_of_type_named<GUI::Label>("name");
-                    name_label.set_text(to_string(role));
+                    name_label.set_text(TRY(String::from_utf8(to_string(role))));
 
                     auto& alignment_picker = *row_widget->find_descendant_of_type_named<GUI::ComboBox>("combo_box");
                     alignment_picker.set_model(*m_alignment_model);
@@ -473,7 +473,7 @@ ErrorOr<void> MainWidget::add_property_tab(PropertyTab const& property_tab)
                     TRY(row_widget->load_from_gml(color_property_gml));
 
                     auto& name_label = *row_widget->find_descendant_of_type_named<GUI::Label>("name");
-                    name_label.set_text(to_string(role));
+                    name_label.set_text(TRY(String::from_utf8(to_string(role))));
 
                     auto& color_input = *row_widget->find_descendant_of_type_named<GUI::ColorInput>("color_input");
                     color_input.on_change = [&, role] {
@@ -503,7 +503,7 @@ ErrorOr<void> MainWidget::add_property_tab(PropertyTab const& property_tab)
                     TRY(row_widget->load_from_gml(metric_property_gml));
 
                     auto& name_label = *row_widget->find_descendant_of_type_named<GUI::Label>("name");
-                    name_label.set_text(to_string(role));
+                    name_label.set_text(TRY(String::from_utf8(to_string(role))));
 
                     auto& spin_box = *row_widget->find_descendant_of_type_named<GUI::SpinBox>("spin_box");
                     spin_box.on_change = [&, role](int value) {
@@ -519,7 +519,7 @@ ErrorOr<void> MainWidget::add_property_tab(PropertyTab const& property_tab)
                     TRY(row_widget->load_from_gml(path_property_gml));
 
                     auto& name_label = *row_widget->find_descendant_of_type_named<GUI::Label>("name");
-                    name_label.set_text(to_string(role));
+                    name_label.set_text(TRY(String::from_utf8(to_string(role))));
 
                     auto& path_input = *row_widget->find_descendant_of_type_named<GUI::TextBox>("path_input");
                     path_input.on_change = [&, role] {
diff --git a/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp b/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
index 70e99f4ab3..e9854bd200 100644
--- a/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
+++ b/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
@@ -263,7 +263,7 @@ void VideoPlayerWidget::set_time_label(Time timestamp)
         string_builder.append(" / --:--:--"sv);
     }
 
-    m_timestamp_label->set_text(string_builder.string_view());
+    m_timestamp_label->set_text(string_builder.to_string().release_value_but_fixme_should_propagate_errors());
 }
 
 void VideoPlayerWidget::drop_event(GUI::DropEvent& event)
diff --git a/Userland/Applications/Welcome/WelcomeWidget.cpp b/Userland/Applications/Welcome/WelcomeWidget.cpp
index 3569c1a57f..7241a5379f 100644
--- a/Userland/Applications/Welcome/WelcomeWidget.cpp
+++ b/Userland/Applications/Welcome/WelcomeWidget.cpp
@@ -50,7 +50,7 @@ ErrorOr<void> WelcomeWidget::create_widgets()
         m_tip_index++;
         if (m_tip_index >= m_tips.size())
             m_tip_index = 0;
-        m_tip_label->set_text(m_tips[m_tip_index].to_deprecated_string());
+        m_tip_label->set_text(m_tips[m_tip_index]);
     };
 
     m_help_button = find_descendant_of_type_named<GUI::Button>("help_button");
@@ -82,7 +82,7 @@ ErrorOr<void> WelcomeWidget::create_widgets()
     if (auto result = open_and_parse_tips_file(); result.is_error()) {
         auto path = TRY(String::formatted("{}/tips.txt", Core::StandardPaths::documents_directory()));
         auto error = TRY(String::formatted("Opening \"{}\" failed: {}", path, result.error()));
-        m_tip_label->set_text(error.to_deprecated_string());
+        m_tip_label->set_text(error);
         warnln(error);
     }
 
@@ -114,7 +114,7 @@ void WelcomeWidget::set_random_tip()
         return;
 
     m_tip_index = get_random_uniform(m_tips.size());
-    m_tip_label->set_text(m_tips[m_tip_index].to_deprecated_string());
+    m_tip_label->set_text(m_tips[m_tip_index]);
 }
 
 void WelcomeWidget::paint_event(GUI::PaintEvent& event)