diff --git a/app/src/main/res/values-b+yue+Hant/strings.xml b/app/src/main/res/values-b+yue+Hant/strings.xml
new file mode 100644
index 00000000..451f0198
--- /dev/null
+++ b/app/src/main/res/values-b+yue+Hant/strings.xml
@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="apply">套用</string>
+    <string name="back">返轉頭</string>
+    <string name="camera_permission_denied">相機權限被拒</string>
+    <string name="camera_permission_rationale">個 app 須要存取相機去掃描文件。影低咗嘅相，只會儲存喺呢部機上面，等到您閂咗目前嘅掃描時就會剷走。</string>
+    <string name="cancel">取消</string>
+    <string name="change_directory">轉資料夾</string>
+    <string name="clear_text">啲字抹咗去</string>
+    <string name="close">關閉</string>
+    <string name="color_mode">濾鏡</string>
+    <string name="color_mode_auto">自動</string>
+    <string name="color_mode_black_and_white">黑白</string>
+    <string name="color_mode_color">彩色</string>
+    <string name="color_mode_default">預設濾鏡</string>
+    <string name="color_mode_grayscale">灰階</string>
+    <string name="contact">聯絡</string>
+    <string name="copied_logs">記錄檔複製咗落剪貼簿</string>
+    <string name="copy_logs">複製記錄檔</string>
+    <string name="creating_export">準備緊匯出…</string>
+    <string name="crop">剪裁</string>
+    <string name="delete">剷走</string>
+    <string name="delete_page">剷走呢版</string>
+    <string name="delete_page_warning">係咪要剷走呢版紙？</string>
+    <string name="developer">開發者</string>
+    <string name="download_dirname">下載</string>
+    <string name="error_context_folder">匯出資料夾：%1$s</string>
+    <string name="error_context_provider">提供者：%1$s</string>
+    <string name="error_export_dir_permission_lost">揀選嘅匯出資料夾現已再存取唔到。請揀過另一個資料夾啦。</string>
+    <string name="error_no_app">搵唔到 app 去開啟呢個檔案</string>
+    <string name="error_occurred">發生錯誤</string>
+    <string name="error_save">儲存唔到檔案</string>
+    <string name="export">匯出</string>
+    <string name="export_as">匯出成 %1$s</string>
+    <string name="export_directory">匯出資料夾</string>
+    <string name="export_folder_permission_lost">資料夾存取冇咗</string>
+    <string name="export_format">匯出格式</string>
+    <string name="export_quality">匯出質素</string>
+    <string name="export_quality_low">低</string>
+    <string name="export_quality_balanced">平衡</string>
+    <string name="export_quality_high">高</string>
+    <string name="file_size">檔案幾大：%1$s</string>
+    <string name="file_size_total">總共幾大：%1$s</string>
+    <string name="filename">檔名</string>
+    <string name="grant_permission">畀權限</string>
+    <string name="import_photos">匯入</string>
+    <string name="libraries">程式庫</string>
+    <string name="libraries_open_source">開放原始碼程式庫</string>
+    <string name="license">授權協議</string>
+    <string name="licensed_under">本應用程式按《GNU 通用公眾特許條款》第 3.0 版授權。</string>
+    <string name="menu">功能表</string>
+    <string name="new_document_warning">目前嘅掃描就會掉咗佢個囉喎。係咪要繼續？</string>
+    <string name="open">開啟</string>
+    <string name="open_file">開啟檔案</string>
+    <string name="rotate_left">向左轉</string>
+    <string name="rotate_right">向右轉</string>
+    <string name="save">儲存</string>
+    <string name="scan_new">開新掃描</string>
+    <string name="scan_current">目前掃描</string>
+    <string name="scan_discard_current">目前嘅掃描掉咗佢</string>
+    <string name="scan_resume">繼續掃描</string>
+    <string name="settings">設定</string>
+    <string name="settings_default_filename">預設檔名</string>
+    <string name="settings_ocr_download_error">下載失敗。請睇過您上唔上到網，同埋呢個 app 係咪有得上網。</string>
+    <string name="settings_ocr_download_intro">語言檔案乃由官方 Tesseract 專案度下載。文字辨識一貫全程離線。</string>
+    <string name="settings_ocr_downloading">下載緊語言檔案</string>
+    <string name="settings_ocr_languages">咩文</string>
+    <string name="settings_ocr_languages_available">提供嘅文</string>
+    <string name="settings_ocr_languages_disabled">已停用</string>
+    <string name="settings_ocr_languages_installed">已安裝</string>
+    <string name="settings_ocr_suggested">建議</string>
+    <string name="settings_section_ocr">文字辨識</string>
+    <string name="settings_section_scan">掃描</string>
+    <string name="settings_section_export">匯出</string>
+    <string name="share">分享</string>
+    <string name="share_document">分享文件</string>
+    <string name="storage_permission_denied">儲存唔到檔案：權限被拒</string>
+    <string name="support">支援</string>
+    <string name="support_last_image">報告最後一次影低嘅相有問題</string>
+    <string name="text_recognition_disabled">文字辨識：已停用</string>
+    <string name="text_recognition_enabled">文字辨識：已啟用</string>
+    <string name="turn_off_torch">閂咗手電筒</string>
+    <string name="turn_on_torch">開著手電筒</string>
+    <string name="unknown_size">未知幾大</string>
+    <string name="version">版本</string>
+    <string name="view_full_list">睇過完整清單</string>
+    <string name="view_the_full_license">睇過完整授權協議</string>
+    <string name="yes">係</string>
+    <plurals name="files_saved_to">
+        <item quantity="other">%1$d 個檔案已儲存至 %3$s</item>
+    </plurals>
+    <plurals name="importing_photos">
+        <item quantity="other">匯入緊 %d 幅相</item>
+    </plurals>
+    <plurals name="page_count">
+        <item quantity="other">%d 版紙</item>
+    </plurals>
+    <string name="about">關於</string>
+    <string name="add_page">加多一版</string>
+    <string name="app_tagline">一個簡單成事、尊重待人，幫您掃描文件嘅應用程式。</string>
+    <string name="black_and_white_jpeg_hint">黑白頁紙匯出成 PDF 會掗少啲位同埋清晰啲。</string>
+    <string name="reset_to_default">用返預設值</string>
+</resources>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index c222da6b..3d1f89d0 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools">
     <string name="about">このアプリについて</string>
     <string name="add_page">ページを追加</string>
diff --git a/app/src/main/res/values-vi/strings.xml b/app/src/main/res/values-vi/strings.xml
new file mode 100644
index 00000000..833fc325
--- /dev/null
+++ b/app/src/main/res/values-vi/strings.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="about">Về</string>
+    <string name="add_page">Thêm trang</string>
+    <string name="apply">Áp dụng</string>
+    <string name="back">Quay lại</string>
+    <string name="camera_permission_denied">Quyền truy cập máy ảnh bị từ chối</string>
+    <string name="camera_permission_rationale">Ứng dụng này yêu cầu truy cập máy ảnh để quét tài liệu. Ảnh được chụp chỉ được lưu trữ trên thiết bị này và sẽ được xóa khi bạn đóng lượt quét hiện tại.</string>
+    <string name="cancel">Hủy</string>
+    <string name="change_directory">Thay đổi thư mục</string>
+    <string name="clear_text">Xóa chữ</string>
+    <string name="close">Đóng</string>
+    <string name="color_mode">Lọc</string>
+    <string name="color_mode_auto">Tự động</string>
+    <string name="color_mode_color">Màu sắc</string>
+    <string name="color_mode_default">Bộ lọc tự động</string>
+    <string name="color_mode_grayscale">Grayscale</string>
+    <string name="app_tagline">Một ứng dụng đơn giản và tôn trọng để quét tài liệu của bạn.</string>
+    <string name="contact">Liên hệ</string>
+    <string name="copied_logs">Nhật ký đã được sao chép vào bộ nhớ tạm</string>
+    <string name="copy_logs">Sao chép nhật ký</string>
+    <string name="creating_export">Chuẩn bị xuất…</string>
+    <string name="crop">Cắt</string>
+    <string name="delete">Xóa</string>
+    <string name="delete_page">Xóa trang</string>
+    <string name="delete_page_warning">Bạn có muốn xóa trang này không?</string>
+    <string name="developer">Nhà phát triển</string>
+    <string name="download_dirname">Tải xuống</string>
+    <string name="error_context_folder">Thư mục xuất: %1$s</string>
+    <string name="error_context_provider">Nhà cung cấp: %1$s</string>
+    <string name="error_export_dir_permission_lost">Thư mục xuất đã chọn không thể truy cập. Vui lòng chọn thư mục khác.</string>
+    <string name="error_no_app">Không tìm thấy ứng dụng để mở tệp này</string>
+    <string name="error_occurred">Đã xảy ra lỗi</string>
+    <string name="error_save">Lưu tệp thất bại</string>
+    <string name="export">Xuất</string>
+    <string name="export_as">Xuất dưới dạng %1$s</string>
+    <string name="export_directory">Thư mục xuất</string>
+    <string name="export_folder_permission_lost">Mất quyền truy cập thư mục</string>
+    <string name="export_format">Xuất định dạng</string>
+    <string name="export_quality">Xuất chất lượng</string>
+    <string name="export_quality_low">Thấp</string>
+    <string name="export_quality_balanced">Cân bằng</string>
+    <string name="export_quality_high">Cao</string>
+    <string name="file_size">Kích thước tệp: %1$s</string>
+    <string name="file_size_total">Tổng kích thước: %1$s</string>
+    <string name="filename">Tên tệp</string>
+    <string name="grant_permission">Cấp quyền</string>
+    <string name="import_photos">Nhập</string>
+    <string name="libraries">Thư viện</string>
+    <string name="libraries_open_source">Thư viện nguồn mở</string>
+    <string name="license">Giấy phép</string>
+</resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 09707d6d..8bcfc14c 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -1,10 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="about">關於</string>
     <string name="add_page">新增頁面</string>
     <string name="app_tagline">一個簡單且尊重隱私的文件掃描應用程式。</string>
     <string name="apply">套用</string>
     <string name="back">返回</string>
-    <string name="black_and_white_jpeg_hint">黑白頁面匯出為 PDF 時更小、更清晰。</string>
+    <string name="black_and_white_jpeg_hint">黑白頁面匯出為 PDF 時會更清晰，檔案亦較小。</string>
     <string name="camera_permission_denied">已拒絕相機權限</string>
     <string name="camera_permission_rationale">此應用程式需要相機存取權限才能掃描文件。擷取的影像僅儲存在此裝置上，並會在您關閉目前掃描時刪除。</string>
     <string name="cancel">取消</string>
@@ -59,7 +60,7 @@
     <string name="rotate_left">向左旋轉</string>
     <string name="rotate_right">向右旋轉</string>
     <string name="save">儲存</string>
-    <string name="scan_new">開始掃描</string>
+    <string name="scan_new">開新掃描</string>
     <string name="scan_current">目前掃描</string>
     <string name="scan_discard_current">放棄目前掃描</string>
     <string name="scan_resume">繼續掃描</string>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index dc3bd025..648714b1 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="about">关于</string>
     <string name="add_page">添加页面</string>