diff --git a/_locales/ca/messages.json b/_locales/ca/messages.json
index d44063b..64ad764 100644
--- a/_locales/ca/messages.json
+++ b/_locales/ca/messages.json
@@ -43,6 +43,10 @@
     "message": "Mostra un enllaç \"historial de publicacions\" als perfils d'usuari.",
     "description": "Feature checkbox in the options page"
   },
+  "options_batchduplicate": {
+    "message": "Afegeix l'opció per duplicar diversos fils alhora a la llista de fils de la Consola de la Comunitat.",
+    "description": "Feature checkbox in the options page"
+  },
   "options_save": {
     "message": "Desa",
     "description": "Button in the options page to save the settings"
@@ -54,5 +58,29 @@
   "inject_previousposts": {
     "message": "Historial de publicacions",
     "description": "Link shown in a user profile (in TW and the Community Console) which points to a search showing the user's posts and messages"
+  },
+  "inject_duplicatebtn": {
+    "message": "Duplicar fils",
+    "description": "Tooltip of the 'duplicate treads' icon shown when selecting multiple threads in the Community Console."
+  },
+  "inject_duplicateinto": {
+    "message": "Duplicar a:",
+    "description": "Label for the text field in which the user has to enter the thread they want to duplicate into."
+  },
+  "inject_duplicateinto_placeholder": {
+    "message": "Introdueix la URL de la Consola de la Comunitat",
+    "description": "Placeholder for the URL field."
+  },
+  "inject_duplicate_cancel": {
+    "message": "Cancel·lar",
+    "description": "Button to cancel the duplication process."
+  },
+  "inject_duplicate_confirm": {
+    "message": "Duplicar",
+    "description": "Button to duplicate all the threads."
+  },
+  "inject_duplicate_progress": {
+    "message": "Progrés",
+    "description": "Title for a progress bar which indicates how many threads were duplicated."
   }
 }
\ No newline at end of file
diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 2592504..ed227e3 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -31,8 +31,8 @@
     "message": "Redirect all threads opened in TW to the Community Console.",
     "description": "Feature checkbox in the options page"
   },
-  "options_loaddrafts":{
-    "message": "Activate the <code class=\"help\" title=\"This flag allows the Community Console to load a previously autosaved reply when loading a thread and clicking the reply button.\">enableLoadingDraftMessages</code> Community Console flag.",
+  "options_loaddrafts": {
+    "message": "Activate the <code class=\"help\" title=\"This flag allows the Community Console to load a previously autosaved reply when loading a thread and clicking the reply button.\">enableLoadingDraftMessages<\/code> Community Console flag.",
     "description": "Feature checkbox in the options page"
   },
   "options_experimental_label": {
@@ -43,6 +43,10 @@
     "message": "Show a \"previous posts\" link in user profiles.",
     "description": "Feature checkbox in the options page"
   },
+  "options_batchduplicate": {
+    "message": "Add the option to duplicate multiple threads at the same time from the Community Console thread list.",
+    "description": "Feature checkbox in the options page"
+  },
   "options_save": {
     "message": "Save",
     "description": "Button in the options page to save the settings"
@@ -54,5 +58,29 @@
   "inject_previousposts": {
     "message": "Previous posts",
     "description": "Link shown in a user profile (in TW and the Community Console) which points to a search showing the user's posts and messages"
+  },
+  "inject_duplicatebtn": {
+    "message": "Mark as duplicate",
+    "description": "Tooltip of the 'duplicate treads' icon shown when selecting multiple threads in the Community Console."
+  },
+  "inject_duplicateinto": {
+    "message": "Duplicate into:",
+    "description": "Label for the text field in which the user has to enter the thread they want to duplicate into."
+  },
+  "inject_duplicateinto_placeholder": {
+    "message": "Enter the Community Console URL",
+    "description": "Placeholder for the URL field."
+  },
+  "inject_duplicate_cancel": {
+    "message": "Cancel",
+    "description": "Button to cancel the duplication process."
+  },
+  "inject_duplicate_confirm": {
+    "message": "Duplicate",
+    "description": "Button to duplicate all the threads."
+  },
+  "inject_duplicate_progress": {
+    "message": "Progress",
+    "description": "Title for a progress bar which indicates how many threads were duplicated."
   }
-}
+}
\ No newline at end of file
diff --git a/_locales/es/messages.json b/_locales/es/messages.json
index 97adb10..a816b45 100644
--- a/_locales/es/messages.json
+++ b/_locales/es/messages.json
@@ -43,6 +43,10 @@
     "message": "Muestra un enlace \"historial de publicaciones\" en los perfiles de usuario.",
     "description": "Feature checkbox in the options page"
   },
+  "options_batchduplicate": {
+    "message": "Añade la opción para duplicar varios hilos a la vez en la lista de hilos de la Consola de la Comunidad.",
+    "description": "Feature checkbox in the options page"
+  },
   "options_save": {
     "message": "Guardar",
     "description": "Button in the options page to save the settings"
@@ -54,5 +58,29 @@
   "inject_previousposts": {
     "message": "Historial de publicaciones",
     "description": "Link shown in a user profile (in TW and the Community Console) which points to a search showing the user's posts and messages"
+  },
+  "inject_duplicatebtn": {
+    "message": "Duplicar hilos",
+    "description": "Tooltip of the 'duplicate treads' icon shown when selecting multiple threads in the Community Console."
+  },
+  "inject_duplicateinto": {
+    "message": "Duplicar a:",
+    "description": "Label for the text field in which the user has to enter the thread they want to duplicate into."
+  },
+  "inject_duplicateinto_placeholder": {
+    "message": "Introduce la URL de la Consola de la Comunidad",
+    "description": "Placeholder for the URL field."
+  },
+  "inject_duplicate_cancel": {
+    "message": "Cancelar",
+    "description": "Button to cancel the duplication process."
+  },
+  "inject_duplicate_confirm": {
+    "message": "Duplicar",
+    "description": "Button to duplicate all the threads."
+  },
+  "inject_duplicate_progress": {
+    "message": "Progreso",
+    "description": "Title for a progress bar which indicates how many threads were duplicated."
   }
 }