diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index 63ff0e560..1aa27903d 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -348,6 +348,12 @@
     -->
     <string name="developer_options_debug_logging">Habilitar registro de depuración</string>
 
+    <!-- This string labels an On/Off switch in the developer options dialog and is used to toggle
+     UI render mode. If enables it uses hardware acceleration which should be faster but it may be more unstable.
+     If disabled it uses software rendering which is stable but not as performant as hardware acceleration
+-->
+    <string name="hardware_acceleration_switch">Activar aceleración de hardware para la interfaz de usuario</string>
+
     <!-- The string labels an On/Off switch in the developer options dialog and is used to toggle enabling Servo. -->
     <string name="developer_options_servo">Habilitar Servo</string>
 
@@ -544,6 +550,10 @@
          that there was an error while syncing. -->
     <string name="fxa_account_last_sync_error">Error en la sincronización</string>
 
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced some time ago. -->
+    <string name="fxa_account_last_synced">Última sincronización hace %1$d minutos</string>
+
     <!-- This string labels an Allow/Don't Allow switch in the Privacy and Security settings dialog
      and is used to enable or disable playback of DRM controlled content. -->
     <string name="security_options_drm_content">Reproducir contenido controlado por DRM (&lt;a href=&quot;http://somesite.com/&quot;&gt;Saber más&lt;/a&gt;)</string>
@@ -619,6 +629,14 @@
     <!-- This string is displayed below the On/Off switch to indicate a switch's current state as 'Off'. -->
     <string name="off">Desactivado</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="sync">Sincronizar</string>
+
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="do_not_sync">No sincronizar</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">¿Qué te gustaría buscar en la Web?</string>
@@ -755,6 +773,21 @@
     <!-- This string is displayed in the middle of the Bookmarks List while the bookmarks are being loaded. -->
     <string name="bookmarks_loading">Cargando marcadores</string>
 
+    <!-- This string is displayed as the title of the folder containing mobile bookmarks (after they're synced). -->
+    <string name="bookmarks_mobile_folder_title">Marcadores del móvil</string>
+
+    <!-- This string is displayed as the title of the folder containing desktop bookmarks (after they're synced). -->
+    <string name="bookmarks_desktop_folder_title">Marcadores de escritorio</string>
+
+    <!-- This string is displayed as the title of the desktop "menu" bookmarks folder. -->
+    <string name="bookmarks_desktop_menu_title">Menú de marcadores</string>
+
+    <!-- This string is displayed as the title of the desktop "toolbar" bookmarks folder. -->
+    <string name="bookmarks_desktop_toolbar_title">Barra de herramientas de marcadores</string>
+
+    <!-- This string is displayed as the title of the desktop "unfiled" bookmarks folder. -->
+    <string name="bookmarks_desktop_unfiled_title">Otros marcadores</string>
+
     <!-- This string is displayed in a tooltip that appears when a user hovers
          over an icon representing 'Remove Bookmark' for an individual bookmark
          item listed in the Bookmarks List. -->
@@ -783,6 +816,10 @@
          all the bookmarks. -->
     <string name="bookmarks_show_all">Mostrar todos los marcadores</string>
 
+    <!-- This string is displayed is the "Sync" button in the bookmarks panel. When pressed the
+         bookmarks are synced with the Firefox account. -->
+    <string name="bookmarks_sync">Sincronizar</string>
+
     <!-- This string is displayed as the title of the history list, which contains the user's visited websites. -->
     <string name="history_title">Historial</string>
 
@@ -811,6 +848,13 @@
          clearing history is displayed. -->
     <string name="history_clear">Limpiar historial</string>
 
+    <!-- This string is displayed is the "Sync" button in the history panel. When pressed the
+         history is synced with the Firefox account. -->
+    <string name="fxa_sync">Sincronizar</string>
+
+    <!-- This string is displayed is the "Sync" button in the history panel when the sync is in progress. -->
+    <string name="fxa_syncing">Sincronizando…</string>
+
     <!-- This string is displayed is the "Cancel" button from the clear history dialog.
          When pressed the dialog is closed. -->
     <string name="history_clear_cancel">Cancelar</string>
@@ -843,6 +887,10 @@
          the more button is pressed in a history item. It opens the selected history item in a new window. -->
     <string name="history_context_menu_new_window">Abrir en una ventana nueva</string>
 
+    <!-- This string is displayed is the history context menu that is displayed when
+         the more button is pressed in a history item. It opens the selected history item in a new tab. -->
+    <string name="history_context_menu_new_tab">Abrir en una pestaña nueva</string>
+
     <!-- This string is displayed is the history context menu that is displayed when
          the more button is pressed in a history item. It add the selected items to favorites. -->
     <string name="history_context_add_bookmarks">Añadir a Marcadores</string>
@@ -958,6 +1006,10 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">Limpiar</string>
 
+    <!-- This string is for the tooltip that appears upon hovering the 'Pop-Up' button in the
+         browser's navigation bar. The button it labels, when pressed, Shows the pop-up blocked dialog. -->
+    <string name="popup_tooltip">Ventana emergente bloqueada</string>
+
     <!-- This string is for the tooltip that when clicking the 'Info' (ⓘ) icon visible next to the current website's
          URL in the URL bar. The button it labels, when pressed, shows information about the site. -->
     <string name="site_info_tooltip">Mostrar información del sitio.</string>
@@ -978,6 +1030,12 @@
          and hovers over the 'Private Browsing' icon in the browser's tray menu. -->
     <string name="private_browsing_exit_tooltip">Salir de la navegación privada</string>
 
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
+    <string name="context_menu_open_new_window_1">Abrir en una nueva ventana</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
+    <string name="context_menu_open_new_tab_1">Abrir en una nueva pestaña</string>
+
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it copies the target to the clipboard -->
     <string name="context_menu_copy_link">Copiar enlace</string>
 
@@ -1142,6 +1200,10 @@
          If the button is clicked the pop-up will be shown -->
     <string name="popup_block_button_show">Mostrar</string>
 
+    <!-- This string is displayed on the right button of the pop-up blocking dialog.
+         If the button is clicked the pop-up will be blocked -->
+    <string name="popup_block_button_cancel">Cancelar</string>
+
     <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
         it allows to select tabs from the tab -->
     <string name="tabs_select">Seleccionar</string>
@@ -1197,4 +1259,76 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <string name="tab_added_notification">¡Nueva pestaña añadida!</string>
 
 
-    </resources>
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been sent. -->
+    <string name="tab_sent_notification">¡Pestaña enviada!</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the send tab dialog -->
+    <string name="hamburger_menu_send_tab">Enviar pestaña al dispositivo</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the window resize panel -->
+    <string name="hamburger_menu_resize">Cambiar tamaño de ventana</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it switches User Agent from desktop to mobile and vice versa -->
+    <string name="hamburger_menu_switch_to_desktop">Modo de escritorio</string>
+
+    <!-- This string is displayed in the tooltip that is displayed when the user hovers the hamburger menu icon -->
+    <string name="hamburger_menu_tooltip">Menú</string>
+
+    <!-- This string is displayed in the title of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_title">Enviar pestaña al dispositivo</string>
+
+    <!-- This string is displayed in the description of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_description">Elije un dispositivo para enviar la pestaña.</string>
+
+    <!-- This string is displayed on top of the available devices list. -->
+    <string name="send_tab_dialog_options_header">Dispositivos disponibles:</string>
+
+    <!-- This string is displayed instead of the devices list if there are no available devices. -->
+    <string name="send_tab_dialog_no_devices">No hay dispositivos conectados.</string>
+
+    <!-- This string is displayed instead of the devices list if the devices list is being synced. -->
+    <string name="send_tab_dialog_syncing">Sincronizando...</string>
+
+    <!-- This string is displayed in the button of the Send Tab to device dialog. When clicked the current tab is sent to the selected device -->
+    <string name="send_tab_dialog_button">Enviar</string>
+
+    <!-- This string is displayed in the header of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_title_1">Inicia sesión para enviar pestañas</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_1">Inicia sesión o crea una nueva cuenta de Firefox para enviar pestañas desde Firefox en tu ordenador de escritorio o dispositivo móvil a tus auriculares.</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_sub_1">La cuenta de Firefox también te permite sincronizar marcadores e historial en todos tus dispositivos.</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the user is redirected to the Firefox Account sign-in page. -->
+    <string name="whats_new_button_sign_in">Iniciar sesión</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the dialog is dismissed. -->
+    <string name="whats_new_button_start_browsing">Comenzar a navegar</string>
+
+
+    <!-- This string is displayed in the title of the slow script dialog. -->
+    <string name="slow_script_dialog_title">Script lento</string>
+
+    <!-- This string is displayed as a description below the title of slow script dialog.
+        '%1$s' will be replaced the script filename that is causing the slow down. -->
+    <string name="slow_script_dialog_description">Una página web está ralentizando tu navegador (%1$s). ¿Qué te gustaría hacer?</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+        it stops the slow script that is causing the web page slow down. -->
+    <string name="slow_script_dialog_action_stop">Detenerlo</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+       it continues to wait for execution of the web page script that caused the slow down. -->
+    <string name="slow_script_dialog_action_wait">Esperar</string>
+</resources>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index b382495bc..e42655f41 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -124,6 +124,9 @@
          opens a dialog box that contains settings that an application or Web developer might want to change. -->
     <string name="settings_developer_options">Options de développement</string>
 
+    <!-- This string is used in the 'Settings' window when user is not signed into a Firefox Account -->
+    <string name="settings_fxa_account_sign_in">Connectez-vous à votre compte</string>
+
     <!-- This string is used in the 'Settings' window when user is signed into a Firefox Account -->
     <string name="settings_fxa_account_manage">Gérer le compte</string>
 
@@ -521,9 +524,20 @@
     <!-- This string is used to in the FxA account manage panel as a description for the Sign In/Out button. -->
     <string name="fxa_account_options_reset">Réinitialiser</string>
 
+    <!-- This string is used to in the Library panels in the sync button when the user is not signed in. -->
+    <string name="fxa_account_sing_to_sync">Se connecter au compte pour synchroniser</string>
+
     <!-- This string is used to in the Library panels in the sync button when syncing is off. -->
     <string name="fxa_account_sync_settings">Paramètres de synchronisation</string>
 
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         when that the content was just synced. -->
+    <string name="fxa_account_last_synced_now">Dernière synchronisation : à l’instant</string>
+
+    <!-- This string is used to in the Library panels to the left of the sync button to indicate
+         that the content has never been synced yet. -->
+    <string name="fxa_account_last_no_synced">Pas encore synchronisé</string>
+
     <!-- This string is used to in the Library panels to the left of the sync button to indicate
          that the syncing is off. -->
     <string name="fxa_account_syncing_off">La synchronisation est désactivée</string>
@@ -614,6 +628,10 @@
          i.e. The history switch for Firefox account syncing-->
     <string name="sync">Synchronisation</string>
 
+    <!-- This string is displayed on the left of switched that are used to enable/disable sync when the switch is enabled.
+         i.e. The history switch for Firefox account syncing-->
+    <string name="do_not_sync">Ne pas synchroniser</string>
+
     <!-- This string is displayed in the voice-search dialog box that is shown to the user when they press the
          button used to initiate Voice Search. -->
     <string name="voice_search_start">Que souhaitez-vous rechercher sur le Web ?</string>
@@ -793,6 +811,10 @@
          all the bookmarks. -->
     <string name="bookmarks_show_all">Afficher tous les marque-pages</string>
 
+    <!-- This string is displayed is the "Sync" button in the bookmarks panel. When pressed the
+         bookmarks are synced with the Firefox account. -->
+    <string name="bookmarks_sync">Synchroniser</string>
+
     <!-- This string is displayed as the title of the history list, which contains the user's visited websites. -->
     <string name="history_title">Historique</string>
 
@@ -821,6 +843,10 @@
          clearing history is displayed. -->
     <string name="history_clear">Effacer l’historique</string>
 
+    <!-- This string is displayed is the "Sync" button in the history panel. When pressed the
+         history is synced with the Firefox account. -->
+    <string name="fxa_sync">Synchroniser</string>
+
     <!-- This string is displayed is the "Sync" button in the history panel when the sync is in progress. -->
     <string name="fxa_syncing">Synchronisation…</string>
 
@@ -975,6 +1001,10 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">Effacer</string>
 
+    <!-- This string is for the tooltip that appears upon hovering the 'Pop-Up' button in the
+         browser's navigation bar. The button it labels, when pressed, Shows the pop-up blocked dialog. -->
+    <string name="popup_tooltip">Fenêtre popup bloquée</string>
+
     <!-- This string is for the tooltip that when clicking the 'Info' (ⓘ) icon visible next to the current website's
          URL in the URL bar. The button it labels, when pressed, shows information about the site. -->
     <string name="site_info_tooltip">Afficher les informations du site</string>
@@ -995,6 +1025,9 @@
          and hovers over the 'Private Browsing' icon in the browser's tray menu. -->
     <string name="private_browsing_exit_tooltip">Quitter la navigation privée</string>
 
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new window. -->
+    <string name="context_menu_open_new_window_1">Ouvrir dans une nouvelle fenêtre</string>
+
     <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the target url in a new tab. -->
     <string name="context_menu_open_new_tab_1">Ouvrir dans un nouvel onglet</string>
 
@@ -1147,6 +1180,10 @@
          when there is one window left. When clicked, it closes the private session -->
     <string name="private_clear_button">Effacer</string>
 
+    <!-- This string is displayed in the title of the pop-up blocking dialog.
+         '%1$s' will be replaced at runtime with the app's name. -->
+    <string name="popup_block_title">%1$s a empêché ce site d’ouvrir une fenêtre popup</string>
+
     <!-- This string is displayed as a description below the title of the pop-up blocking dialog. -->
     <string name="popup_block_description">Voulez-vous les afficher tout de même ?</string>
 
@@ -1163,4 +1200,130 @@
     <string name="popup_block_button_cancel">Annuler</string>
 
 
-    </resources>
+    <!-- This string is displayed in a button on the header of the tabs dialog. When clicked,
+        it allows to select tabs from the tab -->
+    <string name="tabs_select">Sélectionner</string>
+
+    <!-- This string is displayed in a button on the header of the tabs dialog, after selection mode is enabled with
+        the Select` button. When clicked it closes the selection mode -->
+    <string name="tabs_select_done">Terminé</string>
+
+    <!-- This string is displayed in a button on the header of the tabs dialog, after selection mode is enabled with
+    the Select` button. When clicked it selects all the available tabs -->
+    <string name="tabs_select_all">Tout sélectionner</string>
+
+    <!-- This string is displayed in a button on the header of the tabs dialog, after selection mode is enabled with
+the Select` button. When clicked it closes all the previously selected tabs -->
+    <string name="tabs_close_selected">Fermer les onglets</string>
+
+    <!-- This string is displayed in a button on the header of the tabs dialog.
+     When clicked it closes all the available tabs -->
+    <string name="tabs_close_all">Tout fermer</string>
+
+    <!-- This string is displayed in a button on the header of the tabs dialog.
+       When clicked it unselects all the tabs -->
+    <string name="tabs_unselect">Tout désélectionner</string>
+
+    <!-- This string is displayed in a label on the header of the tabs dialog. It indicates that there is one tab
+        available -->
+    <string name="tabs_counter_singular">1 onglet</string>
+
+    <!-- This string is displayed in a label on the header of the tabs dialog. It indicates that there are n tabs available.
+        %1$s expands to a integer which indicates the number of tabs. This number is always larger than 1, ortherwise
+        tabs_counter_singular key is used-->
+    <string name="tabs_counter_plural">%1$s onglets</string>
+
+    <!-- This string is displayed in a label on the header of the tabs dialog. It's only visible in tab selection mode.
+        It indicates that there is one tab selected -->
+    <string name="tabs_selected_counter_singular">1 onglet sélectionné</string>
+
+    <!-- This string is displayed in a label on the header of the tabs dialog. It's only visible in tab selection mode.
+        It indicates that there are n tabs selected. %1$s expands to a integer which indicates the number of tabs.
+        This number is always larger than 1, ortherwise tabs_selected_counter_singular key is used-->
+    <string name="tabs_selected_counter_plural">%1$s onglets sélectionnés</string>
+
+    <!-- This string is displayed in a label on the header of the tabs dialog. It's only visible in tab selection mode.
+     It indicates that there are no tabs selected -->
+    <string name="tabs_selected_counter_none">0 onglet sélectionné</string>
+
+    <!-- This string is for the tooltip that appears when the users hovers in the tabs icon in the browser's
+        tray menu. When clicked it opens the tray dialog in the current active window -->
+    <string name="tabs_tray_tooltip">Afficher les onglets</string>
+
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been added on the background. -->
+    <string name="tab_added_notification">Nouvel onglet ajouté !</string>
+
+    <!-- This string is displayed in a tooltip that appears in the tray bar on top of the
+     tabs tray button then a tab has been sent. -->
+    <string name="tab_sent_notification">Onglet envoyé !</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the send tab dialog -->
+    <string name="hamburger_menu_send_tab">Envoyer l’onglet à un appareil</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it opens the window resize panel -->
+    <string name="hamburger_menu_resize">Redimensionnement de la fenêtre</string>
+
+    <!-- This string is displayed inside the Hamburger menu at the right of the navigation bar. When clicked
+         it switches User Agent from desktop to mobile and vice versa -->
+    <string name="hamburger_menu_switch_to_desktop">Version ordinateur</string>
+
+    <!-- This string is displayed in the tooltip that is displayed when the user hovers the hamburger menu icon -->
+    <string name="hamburger_menu_tooltip">Menu</string>
+
+    <!-- This string is displayed in the title of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_title">Envoyer l’onglet à un appareil</string>
+
+    <!-- This string is displayed in the description of the Send Tab to device dialog. -->
+    <string name="send_tab_dialog_description">Choisissez un appareil pour envoyer l’onglet.</string>
+
+    <!-- This string is displayed on top of the available devices list. -->
+    <string name="send_tab_dialog_options_header">Appareils disponibles :</string>
+
+    <!-- This string is displayed instead of the devices list if there are no available devices. -->
+    <string name="send_tab_dialog_no_devices">Aucun appareil connecté.</string>
+
+    <!-- This string is displayed instead of the devices list if the devices list is being synced. -->
+    <string name="send_tab_dialog_syncing">Synchronisation…</string>
+
+    <!-- This string is displayed in the button of the Send Tab to device dialog. When clicked the current tab is sent to the selected device -->
+    <string name="send_tab_dialog_button">Envoyer</string>
+
+    <!-- This string is displayed in the header of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_title_1">Connectez-vous pour envoyer des onglets</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_1">Connectez-vous ou créez un nouveau compte Firefox pour envoyer des onglets depuis Firefox sur votre ordinateur ou votre appareil mobile vers votre casque.</string>
+
+    <!-- This string is displayed in the body of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. -->
+    <string name="whats_new_body_sub_1">Un compte Firefox vous permet également de synchroniser les marque-pages et l’historique entre tous vos appareils.</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the user is redirected to the Firefox Account sign-in page. -->
+    <string name="whats_new_button_sign_in">Se connecter</string>
+
+    <!-- This string is displayed a button of the what's new dialog that is displayed if the user has updated
+         or updated the app and hasn't signed it yet. If clicked the dialog is dismissed. -->
+    <string name="whats_new_button_start_browsing">Commencer la navigation</string>
+
+
+    <!-- This string is displayed in the title of the slow script dialog. -->
+    <string name="slow_script_dialog_title">Script lent</string>
+
+    <!-- This string is displayed as a description below the title of slow script dialog.
+        '%1$s' will be replaced the script filename that is causing the slow down. -->
+    <string name="slow_script_dialog_description">Une page web ralentit votre navigateur (%1$s). Que voulez-vous faire ?</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+        it stops the slow script that is causing the web page slow down. -->
+    <string name="slow_script_dialog_action_stop">L’arrêter</string>
+
+    <!-- This string is displayed as a button below the slow script dialog description message. When clicked
+       it continues to wait for execution of the web page script that caused the slow down. -->
+    <string name="slow_script_dialog_action_wait">Patienter</string>
+</resources>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index 7247d7243..36f286722 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -349,6 +349,12 @@
     -->
     <string name="developer_options_debug_logging">Debuglogging inschakelen</string>
 
+    <!-- This string labels an On/Off switch in the developer options dialog and is used to toggle
+     UI render mode. If enables it uses hardware acceleration which should be faster but it may be more unstable.
+     If disabled it uses software rendering which is stable but not as performant as hardware acceleration
+-->
+    <string name="hardware_acceleration_switch">UI-hardwareversnelling inschakelen</string>
+
     <!-- The string labels an On/Off switch in the developer options dialog and is used to toggle enabling Servo. -->
     <string name="developer_options_servo">Servo inschakelen</string>
 
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index b1242b0b1..6eed25790 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -349,6 +349,12 @@
     -->
     <string name="developer_options_debug_logging">Rejestrowanie debugowania</string>
 
+    <!-- This string labels an On/Off switch in the developer options dialog and is used to toggle
+     UI render mode. If enables it uses hardware acceleration which should be faster but it may be more unstable.
+     If disabled it uses software rendering which is stable but not as performant as hardware acceleration
+-->
+    <string name="hardware_acceleration_switch">Sprzętowe przyspieszanie interfejsu</string>
+
     <!-- The string labels an On/Off switch in the developer options dialog and is used to toggle enabling Servo. -->
     <string name="developer_options_servo">Silnik Servo</string>
 
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 14e9afd1a..cfeab2ca2 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -349,6 +349,12 @@
     -->
     <string name="developer_options_debug_logging">Включить отладочное логирование</string>
 
+    <!-- This string labels an On/Off switch in the developer options dialog and is used to toggle
+     UI render mode. If enables it uses hardware acceleration which should be faster but it may be more unstable.
+     If disabled it uses software rendering which is stable but not as performant as hardware acceleration
+-->
+    <string name="hardware_acceleration_switch">Включить аппаратное ускорение интерфейса</string>
+
     <!-- The string labels an On/Off switch in the developer options dialog and is used to toggle enabling Servo. -->
     <string name="developer_options_servo">Включить Servo</string>