diff --git a/frontend/src/components/FileTreeComponent.tsx b/frontend/src/components/FileTreeComponent.tsx
index e0f06663..cbd78277 100644
--- a/frontend/src/components/FileTreeComponent.tsx
+++ b/frontend/src/components/FileTreeComponent.tsx
@@ -495,11 +495,11 @@ const FileTreeComponent: React.FC<FileTreeComponentProps> = ({
               <span className="text-xs text-gray-600 dark:text-gray-400">
                 {processingRef.current
                   ? currentOpRef.current === 'add'
-                    ? 'Uploading…'
-                    : 'Deleting…'
+                    ? t('settings.sources.uploading')
+                    : t('settings.sources.deleting')
                   : null}
                 {queueLength > 0
-                  ? `${processingRef.current ? ' • ' : ''}Queued: ${queueLength}`
+                  ? `${processingRef.current ? ' • ' : ''}${t('settings.sources.queued', { count: queueLength })}`
                   : ''}
               </span>
             )}
@@ -509,12 +509,12 @@ const FileTreeComponent: React.FC<FileTreeComponentProps> = ({
               title={
                 processingRef.current
                   ? currentOpRef.current === 'add'
-                    ? 'Uploading files...'
-                    : 'Deleting...'
-                  : 'Add file'
+                    ? t('settings.sources.uploadingFilesTitle')
+                    : t('settings.sources.deletingTitle')
+                  : t('settings.sources.addFile')
               }
             >
-              Add file
+              {t('settings.sources.addFile')}
             </button>
           </div>
         )}
@@ -621,7 +621,7 @@ const FileTreeComponent: React.FC<FileTreeComponentProps> = ({
                 <button
                   onClick={(e) => handleMenuClick(e, itemId)}
                   className="inline-flex h-[35px] w-[24px] shrink-0 items-center justify-center rounded-md transition-colors hover:bg-[#EBEBEB] dark:hover:bg-[#26272E]"
-                  aria-label="Open menu"
+                  aria-label={t('settings.sources.menuAlt')}
                 >
                   <img
                     src={ThreeDots}
@@ -677,7 +677,7 @@ const FileTreeComponent: React.FC<FileTreeComponentProps> = ({
                 <button
                   onClick={(e) => handleMenuClick(e, itemId)}
                   className="inline-flex h-[35px] w-[24px] shrink-0 items-center justify-center rounded-md transition-colors hover:bg-[#EBEBEB] dark:hover:bg-[#26272E]"
-                  aria-label="Open menu"
+                  aria-label={t('settings.sources.menuAlt')}
                 >
                   <img
                     src={ThreeDots}
@@ -779,7 +779,7 @@ const FileTreeComponent: React.FC<FileTreeComponentProps> = ({
 
           <img
             src={SearchIcon}
-            alt="Search"
+            alt={t('settings.sources.searchAlt')}
             className="absolute top-1/2 left-3 h-4 w-4 -translate-y-1/2 transform opacity-60"
           />
 
@@ -882,7 +882,7 @@ const FileTreeComponent: React.FC<FileTreeComponentProps> = ({
         message={
           itemToDelete?.isFile
             ? t('settings.sources.confirmDelete')
-            : `Are you sure you want to delete the directory "${itemToDelete?.name}" and all its contents? This action cannot be undone.`
+            : t('settings.sources.deleteDirectoryWarning', { name: itemToDelete?.name })
         }
         modalState={deleteModalState}
         setModalState={setDeleteModalState}
diff --git a/frontend/src/locale/en.json b/frontend/src/locale/en.json
index 5c2938cb..1f606339 100644
--- a/frontend/src/locale/en.json
+++ b/frontend/src/locale/en.json
@@ -90,9 +90,16 @@
       "folderAlt": "Folder",
       "parentFolderAlt": "Parent folder",
       "menuAlt": "Menu",
-      "menuAlt": "Menu",
       "tokensUnit": "tokens",
-      "editAlt": "Edit"
+      "editAlt": "Edit",
+      "uploading": "Uploading…",
+      "deleting": "Deleting…",
+      "queued": "Queued: {{count}}",
+      "addFile": "Add file",
+      "uploadingFilesTitle": "Uploading files...",
+      "deletingTitle": "Deleting...",
+      "deleteDirectoryWarning": "Are you sure you want to delete the directory \"{{name}}\" and all its contents? This action cannot be undone.",
+      "searchAlt": "Search"
     },
     "apiKeys": {
       "label": "Chatbots",
diff --git a/frontend/src/locale/es.json b/frontend/src/locale/es.json
index 611f3b08..3fe05bc1 100644
--- a/frontend/src/locale/es.json
+++ b/frontend/src/locale/es.json
@@ -91,7 +91,15 @@
       "parentFolderAlt": "Carpeta padre",
       "menuAlt": "Menú",
       "tokensUnit": "tokens",
-      "editAlt": "Editar"
+      "editAlt": "Editar",
+      "uploading": "Subiendo…",
+      "deleting": "Eliminando…",
+      "queued": "En cola: {{count}}",
+      "addFile": "Añadir archivo",
+      "uploadingFilesTitle": "Subiendo archivos...",
+      "deletingTitle": "Eliminando...",
+      "deleteDirectoryWarning": "¿Está seguro de que desea eliminar el directorio \"{{name}}\" y todo su contenido? Esta acción no se puede deshacer.",
+      "searchAlt": "Buscar"
     },
     "apiKeys": {
       "label": "Chatbots",
diff --git a/frontend/src/locale/jp.json b/frontend/src/locale/jp.json
index 5a08cd2d..2092231b 100644
--- a/frontend/src/locale/jp.json
+++ b/frontend/src/locale/jp.json
@@ -91,7 +91,15 @@
       "parentFolderAlt": "親フォルダ",
       "menuAlt": "メニュー",
       "tokensUnit": "トークン",
-      "editAlt": "編集"
+      "editAlt": "編集",
+      "uploading": "アップロード中…",
+      "deleting": "削除中…",
+      "queued": "キュー: {{count}}",
+      "addFile": "ファイルを追加",
+      "uploadingFilesTitle": "ファイルをアップロード中...",
+      "deletingTitle": "削除中...",
+      "deleteDirectoryWarning": "ディレクトリ \"{{name}}\" とその内容をすべて削除してもよろしいですか？この操作は元に戻せません。",
+      "searchAlt": "検索"
     },
     "apiKeys": {
       "label": "チャットボット",
diff --git a/frontend/src/locale/ru.json b/frontend/src/locale/ru.json
index 0fd7c845..30d7a435 100644
--- a/frontend/src/locale/ru.json
+++ b/frontend/src/locale/ru.json
@@ -91,7 +91,15 @@
       "parentFolderAlt": "Родительская папка",
       "menuAlt": "Меню",
       "tokensUnit": "токенов",
-      "editAlt": "Редактировать"
+      "editAlt": "Редактировать",
+      "uploading": "Загрузка…",
+      "deleting": "Удаление…",
+      "queued": "В очереди: {{count}}",
+      "addFile": "Добавить файл",
+      "uploadingFilesTitle": "Загрузка файлов...",
+      "deletingTitle": "Удаление...",
+      "deleteDirectoryWarning": "Вы уверены, что хотите удалить каталог \"{{name}}\" и все его содержимое? Это действие нельзя отменить.",
+      "searchAlt": "Поиск"
     },
     "apiKeys": {
       "label": "API ключи",
diff --git a/frontend/src/locale/zh-TW.json b/frontend/src/locale/zh-TW.json
index d364d6fb..a893a716 100644
--- a/frontend/src/locale/zh-TW.json
+++ b/frontend/src/locale/zh-TW.json
@@ -91,7 +91,15 @@
       "parentFolderAlt": "上層資料夾",
       "menuAlt": "選單",
       "tokensUnit": "Token",
-      "editAlt": "編輯"
+      "editAlt": "編輯",
+      "uploading": "正在上傳…",
+      "deleting": "正在刪除…",
+      "queued": "已排隊：{{count}}",
+      "addFile": "新增檔案",
+      "uploadingFilesTitle": "正在上傳檔案...",
+      "deletingTitle": "正在刪除...",
+      "deleteDirectoryWarning": "您確定要刪除目錄 \"{{name}}\" 及其所有內容嗎？此操作無法復原。",
+      "searchAlt": "搜尋"
     },
     "apiKeys": {
       "label": "聊天機器人",
diff --git a/frontend/src/locale/zh.json b/frontend/src/locale/zh.json
index 4c33a320..70a163fa 100644
--- a/frontend/src/locale/zh.json
+++ b/frontend/src/locale/zh.json
@@ -91,7 +91,15 @@
       "parentFolderAlt": "父文件夹",
       "menuAlt": "菜单",
       "tokensUnit": "令牌",
-      "editAlt": "编辑"
+      "editAlt": "编辑",
+      "uploading": "正在上传…",
+      "deleting": "正在删除…",
+      "queued": "已排队：{{count}}",
+      "addFile": "添加文件",
+      "uploadingFilesTitle": "正在上传文件...",
+      "deletingTitle": "正在删除...",
+      "deleteDirectoryWarning": "确定要删除目录 \"{{name}}\" 及其所有内容吗？此操作无法撤销。",
+      "searchAlt": "搜索"
     },
     "apiKeys": {
       "label": "聊天机器人",
diff --git a/frontend/src/settings/Sources.tsx b/frontend/src/settings/Sources.tsx
index eece44e3..e2302a4e 100644
--- a/frontend/src/settings/Sources.tsx
+++ b/frontend/src/settings/Sources.tsx
@@ -388,12 +388,12 @@ export default function Sources({
                                 handleMenuClick(e, docId);
                               }}
                               className="inline-flex h-[35px] w-[24px] shrink-0 items-center justify-center rounded-md transition-colors hover:bg-[#EBEBEB] dark:hover:bg-[#26272E]"
-                              aria-label="Open menu"
+                              aria-label={t('settings.sources.menuAlt')}
                               data-testid={`menu-button-${docId}`}
                             >
                               <img
                                 src={ThreeDots}
-                                alt={t('Open menu')}
+                                alt={t('settings.sources.menuAlt')}
                                 className="opacity-60 hover:opacity-100"
                               />
                             </button>