diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 1a929e96f..0be8482e3 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -218,6 +218,10 @@
          changes the app and the language of the speech-recognition-based search to 'English (US)'. -->
     <string name="settings_language_english">英語 (米国)</string>
 
+    <!-- This string is used to label a radio button in the 'Settings' Language dialog that, when pressed,
+         changes the app and the language of the speech-recognition-based search to 'English (UK)'. -->
+    <string name="settings_language_english_uk">英語 (英国)</string>
+
     <!-- This string is used to label a radio button in the settings language dialog that, when pressed,
          changes the app and the language of the speech-recognition-based search to 'Chinese (Traditional/Zhuyin)'. -->
     <string name="settings_language_traditional_chinese">中国語 (繁体字/注音)</string>
@@ -242,6 +246,10 @@
          changes the app and the language of the speech-recognition-based search to 'Spanish'. -->
     <string name="settings_language_spanish">スペイン語</string>
 
+    <!-- This string is used to label a radio button in the settings language dialog that, when pressed,
+         changes the app and the language of the speech-recognition-based search to 'Spanish (Spain)'. -->
+    <string name="settings_language_spanish_spain">スペイン語 (スペイン)</string>
+
     <!-- This string is used to label a radio button in the settings language dialog that, when pressed,
          changes the app and the language of the speech-recognition-based search to 'Korean'. -->
     <string name="settings_language_korean">韓国語</string>
@@ -266,6 +274,14 @@
      changes the app and the language of the speech-recognition-based search to 'Norwegian'. -->
     <string name="settings_language_norwegian">ノルウェー語</string>
   
+    <!-- This string is used to label a radio button in the settings language dialog that, when pressed,
+ changes the app and the language of the speech-recognition-based search to 'Norwegian (Bokmaal)'. -->
+    <string name="settings_language_norwegian_bokmaal">ノルウェー語 (ブークモール)</string>
+
+    <!-- This string is used to label a radio button in the settings language dialog that, when pressed,
+ changes the app and the language of the speech-recognition-based search to 'Norwegian (Nynorsk)'. -->
+    <string name="settings_language_norwegian_nynorsk">ノルウェー語 (ニーノシュク)</string>
+  
     <!-- This string is used to label a radio button in the settings language dialog that, when pressed,
      changes the app and the language of the speech-recognition-based search to 'Danish'. -->
     <string name="settings_language_swedish">スウェーデン語</string>
@@ -341,10 +357,6 @@
          and is used to toggle remote debugging of website content in the application. -->
     <string name="developer_options_remote_debugging">リモートデバッガーを有効化</string>
 
-    <!-- This string labels an On/Off switch in the 'Developer Options' dialog
-         and is used to toggle redirecting JavaScript Console output to the Android Logcat (i.e., `adb logcat`). -->
-    <string name="developer_options_show_console">コンソール出力を Logcat に転送</string>
-
     <!-- This string labels an On/Off switch in the developer options dialog
          and is used to customize background environments of the app. -->
     <string name="developer_options_env_override">景色の上書きを有効化</string>
@@ -374,6 +386,12 @@
     -->
     <string name="bypass_cache_on_reload_switch">再読み込み時のキャッシュ迂回機能を有効化</string>
 
+    <!-- This string labels an On/Off switch in the developer options dialog and is used to toggle
+         Multi-e10s. Multi-e10s allocates a process for each open window instead of having only one
+         process for all windows.
+    -->
+    <string name="multi_e10s_switch">Multi-e10s を有効化</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 を有効化</string>
 
@@ -658,6 +676,10 @@
         Devices access to websites (WebXR). -->
     <string name="security_options_permission_webxr">VR デバイス (WebXR)</string>
 
+    <!-- This string labels the button in the privacy option panel that open the dialog to add/remove
+         webxr blocked sites. -->
+    <string name="security_options_webxr_settings">詳細設定</string>
+
     <!-- This string is a label above the group of switches that indicates that the switches below
          relate to Firefox data collection and use. -->
     <string name="security_options_speech_data_collection_title">%1$s のデータの収集と使用</string>
@@ -852,6 +874,10 @@
          bookmarks tray button then a new item is bookmarked. -->
     <string name="bookmarks_saved_notification">ブックマークを保存しました。</string>
 
+    <!-- This string is displayed in a notification that appears in the tray bar on top of the
+         downloads tray button then a download finishes. %1$s will be replaced with the downloaded file name. -->
+    <string name="download_completed_notification">%1$s をダウンロードしました</string>
+
     <!-- This string is displayed in a tooltip that appears when a user hovers
          over an icon representing 'Edit This Bookmark' for an individual bookmark
          item listed in the Bookmarks List. -->
@@ -903,6 +929,26 @@
          clearing history is displayed. -->
     <string name="history_clear">履歴を消去</string>
 
+    <!-- This string is displayed as the title of the downloads list, which contains the user's downloaded files. -->
+    <string name="downloads_title">ダウンロードリスト</string>
+
+    <!-- This string is displayed as the title of the downloads list when the downloads is empty. -->
+    <string name="downloads_empty">ダウンロードリストが空です</string>
+
+    <!-- This string is displayed under the downloads title in the downloads list. -->
+    <string name="downloads_description">ここからダウンロードしたファイルにアクセスできます</string>
+
+    <!-- This string is displayed in the middle of the downloads list while the downloads is being loaded. -->
+    <string name="downloads_loading">ダウンロードリストを読み込んでいます</string>
+
+    <!-- This string is displayed in the "Delete All" button in the downloads list.
+         When pressed the all the downloads in the list are deleted both from the list and the disk. -->
+    <string name="downloads_delete">すべて削除</string>
+
+    <!-- This string is displayed in the "Sort By" button in the downloads list.
+         When pressed a dropdown menu is displayed with the sorting options. -->
+    <string name="downloads_sort">並べ替え</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">同期</string>
@@ -972,6 +1018,11 @@
          the more button is pressed in a history item. It removes the selected item from favorites. -->
     <string name="history_context_remove_bookmarks">ブックマークから削除</string>
 
+    <!-- This string is displayed is the downloads context menu that is displayed when
+         the more button is pressed in a downloads item. It deletes the selected item from the downloads list
+         and also from disk. -->
+    <string name="download_context_delete">削除</string>
+
     <!-- This string labels the Reset button that restores the default display settings values. -->
     <string name="display_options_reset">表示設定をリセット</string>
 
@@ -995,6 +1046,10 @@
     <!-- This string is used to label radio buttons for setting ETP in. -->
     <string name="privacy_options_tracking">強化型トラッキング防止。 (&lt;a href=&quot;%1$s&quot;&gt;詳細情報&lt;/a&gt;)</string>
 
+    <!-- This string labels the button in the privacy option panel that opens the dialog to add/remove
+         Tracking protection exceptions. -->
+    <string name="privacy_options_tracking_exceptions_v1">詳細設定</string>
+
     <!-- This string labels the Reset button that restores the default controller settings values. -->
     <string name="controller_options_reset">コントローラーの設定をリセット</string>
 
@@ -1087,10 +1142,6 @@
          browser's navigation bar. The button it labels, when pressed, clears the navigation bar text. -->
     <string name="clear_tooltip">消去します</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">ポップアップをブロックしました</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">サイトの情報を表示</string>
@@ -1103,6 +1154,11 @@
          'Resize' refers to the button used to resize the browset window. -->
     <string name="resize_tooltip">サイズ変更します</string>
 
+    <!-- This string appears in the WebXR interstial next to an arrow pointing to the controller button that
+     has to be used to exit from WebXR. It's preferred to separate it in two lines if possible.
+     \n is used to create a new line  -->
+    <string name="webxr_interstitial_exit_webxr">WebXR\nを終了</string>
+
     <!-- This string is for the tooltip that appears upon hovering the 'Tracking' button in the
      browser's navigation bar. The button it labels, when pressed, Shows the Tracking dialog. -->
     <string name="tracking_allowed_tooltip">トラッキング防止は有効です</string>
@@ -1125,6 +1181,33 @@
     <!-- 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">新しいタブで開く</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_link_new_window_1">リンクを新しいウィンドウで開く</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_link_new_tab_1">リンクを新しいタブで開く</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the image in the current window. -->
+    <string name="context_menu_view_image">画像だけを表示</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the video in the current window. -->
+    <string name="context_menu_view_video">動画だけを表示</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it opens the audio in the current window. -->
+    <string name="context_menu_view_audio">音声だけを表示</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it triggers a linked element download. -->
+    <string name="context_menu_download_link">リンク先をダウンロード</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it triggers the video element download. -->
+    <string name="context_menu_download_video">動画をダウンロード</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it triggers the audio element download. -->
+    <string name="context_menu_download_audio">音声をダウンロード</string>
+
+    <!-- This string is shown in the context menu after a longpress on a link. When clicked it triggers the image element download. -->
+    <string name="context_menu_download_image">画像をダウンロード</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">リンクをコピー</string>
 
@@ -1183,6 +1266,14 @@
          tray and the History view is closed. The button it labels, when pressed, closes the History view. -->
     <string name="close_history_tooltip">履歴を閉じます</string>
 
+    <!-- This string is for the tooltip that appears when the user hovers over the 'Downloads' icon in the
+         tray and the Downloads view is closed. The button it labels, when pressed, opens a list view of the user's downloads. -->
+    <string name="open_downloads_tooltip">ダウンロードリストを開きます</string>
+
+    <!-- This string is for the tooltip that appears when the user hovers over the 'Downloads' icon in the
+         tray and the Downloads view is closed. The button it labels, when pressed, closes the Downloads view. -->
+    <string name="close_downloads_tooltip">ダウンロードリストを閉じます</string>
+
     <!-- This string is displayed in any button used for removing all the items in the current context. -->
     <string name="remove_all">すべて削除</string>
 
@@ -1279,13 +1370,6 @@
          when there is one window left. When clicked, it closes the private session -->
     <string name="private_clear_button">消去</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 がこのサイトのポップアップをブロックしました</string>
-
-    <!-- This string is displayed as a description below the title of the pop-up blocking dialog. -->
-    <string name="popup_block_description">ポップアップを表示しますか？</string>
-
     <!-- This string is displayed on the right of the checkbox in the the pop-up blocking dialog.
          If the checkbox is checked Firefox will never ask again to block pop-ups for this site -->
     <string name="popup_block_checkbox">このサイトでは次回から確認しない</string>
@@ -1435,4 +1519,35 @@ the Select` button. When clicked it closes all the previously selected tabs -->
     <!-- This string is displayed in the disable button of the quick Tracking Protection dialog, accessed from the Tracking Protection icon in the URL bar. -->
     <string name="tracking_dialog_button_disable">無効化</string>
 
-    </resources>
+    <!-- This string is displayed in the delete download confirmation dialog cancel button. -->
+    <string name="download_delete_confirm_cancel">キャンセル</string>
+
+    <!-- This string is displayed in the confirmation dialog delete button. -->
+    <string name="download_delete_confirm_delete">削除</string>
+
+    <!-- This string is displayed in the title of the download error dialog. -->
+    <string name="download_error_title">エラーが発生しました</string>
+
+    <!-- This string is displayed in the body of the download error dialog.
+         '%1$s' will be replaced at runtime with the name of the downloaded file. -->
+    <string name="download_error_body">%1$s のダウンロード中にエラーが発生しました。もう一度試してください。</string>
+
+    <!-- This string is displayed in the button to dismiss the download error dialog. -->
+    <string name="download_error_ok">OK</string>
+
+    <!-- This string is displayed in the downloads panel, in the download status when the download has failed. -->
+    <string name="download_status_failed">失敗しました</string>
+
+    <!-- This string is displayed in the downloads panel, in the download status when the download is paused. -->
+    <string name="download_status_paused">一時停止中</string>
+
+    <!-- This string is displayed in the downloads panel, in the download status when the download is pending. -->
+    <string name="download_status_pending">保留中</string>
+
+    <!-- This string is displayed in the downloads panel, in the download status when the resource is no longer available. -->
+    <string name="download_status_unavailable">利用できません</string>
+
+    <!-- This string is displayed in the downloads panel, in the download status when an unknown error happened. -->
+    <string name="download_status_unknown_error">原因不明のエラーです</string>
+
+</resources>