diff --git a/app/src/main/res/values-br/strings.xml b/app/src/main/res/values-br/strings.xml
index 379c9077e..881dfd1c8 100644
--- a/app/src/main/res/values-br/strings.xml
+++ b/app/src/main/res/values-br/strings.xml
@@ -38,9 +38,9 @@
     <!-- Title for the home screen section with recently saved bookmarks. -->
     <string name="recent_bookmarks_title">Sinedoù nevez</string>
     <!-- Content description for the recently saved bookmarks section on the home screen. -->
-    <string name="recently_saved_bookmarks_content_description">Sinedoù enrollet nevez ’zo</string>
+    <string moz:removedIn="100" name="recently_saved_bookmarks_content_description" tools:ignore="UnusedResources">Sinedoù enrollet nevez ’zo</string>
     <!-- Title for the button which navigates the user to show all of their saved bookmarks. -->
-    <string name="recently_saved_show_all">Diskouez pep tra</string>
+    <string moz:removedIn="101" name="recently_saved_show_all" tools:ignore="UnusedResources">Diskouez pep tra</string>
 
     <!-- Content description for the button which navigates the user to show all of their saved bookmarks. -->
     <string name="recently_saved_show_all_content_description_2">Diskouez an holl sinedoù enrollet</string>
@@ -177,8 +177,6 @@
     <string name="browser_menu_add_to_homescreen">Ouzhpennañ dʼar skramm degemer</string>
     <!-- Browser menu toggle that installs a Progressive Web App shortcut to the site on the device home screen. -->
     <string name="browser_menu_install_on_homescreen">Staliañ</string>
-    <!-- Menu option on the toolbar that takes you to synced tabs page-->
-    <string moz:removedIn="98" name="synced_tabs" tools:ignore="UnusedResources">Ivinelloù goubredet</string>
     <!-- Content description (not visible, for screen readers etc.) for the Resync tabs button -->
     <string name="resync_button_content_description">Adgoubredañ</string>
     <!-- Browser menu button that opens the find in page menu -->
@@ -209,8 +207,6 @@
     <!-- Browser menu label for editing a bookmark -->
     <string name="browser_menu_edit">Embann</string>
 
-    <!-- Browser menu button that opens the Customize menu -->
-    <string moz:removedIn="98" name="browser_menu_customize_home" tools:ignore="UnusedResources">Personelaat an degemer</string>
     <!-- Button shown on the home page that opens the Customize home settings -->
     <string name="browser_menu_customize_home_1">Personelaat an degemer</string>
     <!-- Browser Toolbar -->
@@ -325,6 +321,26 @@
     <string name="preferences_screenshots_in_private_mode_disclaimer">Mard eo aotreet, an ivinelloù prevez a vo hewel pa vo meur a arload digor</string>
     <!-- Preference for adding private browsing shortcut -->
     <string name="preferences_add_private_browsing_shortcut">Ouzhpennañ ur verradenn merdeiñ prevez</string>
+    <!-- Preference for enabling "HTTPS-Only" mode -->
+    <string name="preferences_https_only_title">Mod HTTPS-hepken</string>
+    <!-- Description of the preference to enable "HTTPS-Only" mode. -->
+    <string name="preferences_https_only_summary">Klask kennaskañ ent emgefreek gant ar c’homenad HTTPS evit muioc’h a surentez.</string>
+    <!-- Summary of tracking protection preference if tracking protection is set to on -->
+    <string name="preferences_https_only_on">Gweredekaet</string>
+    <!-- Summary of tracking protection preference if tracking protection is set to off -->
+    <string name="preferences_https_only_off">Diweredekaet</string>
+    <!-- Text displayed that links to website containing documentation about "HTTPS-Only" mode -->
+    <string name="preferences_http_only_learn_more">Gouzout hiroc’h</string>
+    <!-- Option for the https only setting -->
+    <string name="preferences_https_only_in_all_tabs">Gweredekaat en holl ivinelloù</string>
+    <!-- Option for the https only setting -->
+    <string name="preferences_https_only_in_private_tabs">Gweredekaat en ivinelloù prevez hepken</string>
+    <!-- Title shown in the error page for when trying to access a http website while https only mode is enabled. -->
+    <string name="errorpage_httpsonly_title">Lec’hienn diogel dihegerz </string>
+    <!-- Message shown in the error page for when trying to access a http website while https only mode is enabled. The message has two paragraphs. This is the first. -->
+    <string name="errorpage_httpsonly_message_title">Moarvat n’eo ket skoret an HTTPS gant al lec’hienn.</string>
+    <!-- Message shown in the error page for when trying to access a http website while https only mode is enabled. The message has two paragraphs. This is the second. -->
+    <string name="errorpage_httpsonly_message_summary">Posupl eo ivez e vefec’h taget, avat. Ma kendalc’hit war al lec’hienn e rankfec’h chom hep lakaat titouroù kizidik. Ma kendalc’hit e vo ivez diweredekaet ar mod HTTPS-hepken war al lec’hienn pad ur mare.</string>
     <!-- Preference for accessibility -->
     <string name="preferences_accessibility">Haezadusted</string>
     <!-- Preference to override the Firefox Account server -->
@@ -1056,7 +1072,9 @@
     <!-- Text shown in snackbar when user bookmarks a list of tabs -->
     <string name="snackbar_message_bookmarks_saved">Sined enrollet!</string>
     <!-- Text shown in snackbar when user adds a site to top sites -->
-    <string name="snackbar_added_to_top_sites">Ouzhpennet dʼal lecʼhiennoù pennañ</string>
+    <string moz:RemovedIn="101" name="snackbar_added_to_top_sites" tools:ignore="UnusedResources">Ouzhpennet dʼal lecʼhiennoù pennañ</string>
+    <!-- Text shown in snackbar when user adds a site to shortcuts -->
+    <string name="snackbar_added_to_shortcuts">Ouzhpennet er berradennoù!</string>
     <!-- Text shown in snackbar when user closes a private tab -->
     <string name="snackbar_private_tab_closed">Ivinell prevez serret</string>
     <!-- Text shown in snackbar when user closes all private tabs -->
@@ -1608,18 +1626,18 @@
     <string name="search_delete_search_engine_success_message">%s : dilamet</string>
 
     <!-- Title text shown for the migration screen to the new browser. Placeholder replaced with app name -->
-    <string name="migration_title">Donemat war ur %s nevez-flamm</string>
+    <string moz:removedIn="100" name="migration_title" tools:ignore="UnusedResources">Donemat war ur %s nevez-flamm</string>
 
     <!-- Description text followed by a list of things migrating (e.g. Bookmarks, History). Placeholder replaced with app name-->
-    <string name="migration_description">Ur merdeer adsavet penn-da-benn ouzh ho kortoz! Gwellaet eo bet an digonusted ha ouzhpennet ez eus bet keweriusterioù evit sikour ac’hanoc’h d’ober muioc’h a draoù enlinenn.\n\nGortozit ur pennadig pa hizivaomp %s gant ho</string>
+    <string moz:removedIn="100" name="migration_description" tools:ignore="UnusedResources">Ur merdeer adsavet penn-da-benn ouzh ho kortoz! Gwellaet eo bet an digonusted ha ouzhpennet ez eus bet keweriusterioù evit sikour ac’hanoc’h d’ober muioc’h a draoù enlinenn.\n\nGortozit ur pennadig pa hizivaomp %s gant ho</string>
     <!-- Text on the disabled button while in progress. Placeholder replaced with app name -->
-    <string name="migration_updating_app_button_text">Oc’h hizivaat %s…</string>
+    <string moz:removedIn="100" name="migration_updating_app_button_text" tools:ignore="UnusedResources">Oc’h hizivaat %s…</string>
     <!-- Text on the enabled button. Placeholder replaced with app name-->
-    <string name="migration_update_app_button">Loc’hañ %s</string>
+    <string moz:removedIn="100" name="migration_update_app_button" tools:ignore="UnusedResources">Loc’hañ %s</string>
     <!-- Accessibility description text for a completed migration item -->
-    <string name="migration_icon_description">Adlec’hiadur echuet</string>
+    <string moz:removedIn="100" name="migration_icon_description" tools:ignore="UnusedResources">Adlec’hiadur echuet</string>
     <!--Text on list of migrated items (e.g. Settings, History, etc.)-->
-    <string name="migration_text_passwords">Gerioù-tremen</string>
+    <string moz:removedIn="100" name="migration_text_passwords" tools:ignore="UnusedResources">Gerioù-tremen</string>
 
     <!-- Heading for the instructions to allow a permission -->
     <string name="phone_feature_blocked_intro">Evit e aotren:</string>
@@ -1649,9 +1667,13 @@
     <!-- Bookmark deletion confirmation -->
     <string name="bookmark_deletion_confirmation">Ha fellout a ra deocʼh dilemel ar sined-mañ?</string>
     <!-- Browser menu button that adds a top site to the home fragment -->
-    <string name="browser_menu_add_to_top_sites">Lakaat el lecʼhiennoù gwellañ</string>
+    <string moz:RemovedIn="101" name="browser_menu_add_to_top_sites" tools:ignore="UnusedResources">Lakaat el lecʼhiennoù gwellañ</string>
     <!-- Browser menu button that removes a top site from the home fragment -->
-    <string name="browser_menu_remove_from_top_sites">Dilamet diwar al lec’hiennoù gwellañ</string>
+    <string moz:RemovedIn="101" name="browser_menu_remove_from_top_sites" tools:ignore="UnusedResources">Dilamet diwar al lec’hiennoù gwellañ</string>
+    <!-- Browser menu button that adds a shortcut to the home fragment -->
+    <string name="browser_menu_add_to_shortcuts">Ouzhpennañ er berradennoù</string>
+    <!-- Browser menu button that removes a shortcut from the home fragment -->
+    <string name="browser_menu_remove_from_shortcuts">Dilemel eus ar berradennoù</string>
     <!-- text shown before the issuer name to indicate who its verified by, parameter is the name of
      the certificate authority that verified the ticket-->
     <string name="certificate_info_verified_by">Gwiriet gant:%1$s</string>
@@ -1726,21 +1748,24 @@
 
     <!-- Top Sites -->
     <!-- Title text displayed in the dialog when top sites limit is reached. -->
-    <string name="top_sites_max_limit_title">Tizhet eo bet ar vevenn lec’hiennoù</string>
+    <string moz:RemovedIn="101" name="top_sites_max_limit_title" tools:ignore="UnusedResources">Tizhet eo bet ar vevenn lec’hiennoù</string>
+    <!-- Title text displayed in the dialog when shortcuts limit is reached. -->
+    <string name="shortcut_max_limit_title">Bevenn berradenn tizhet</string>
     <!-- Content description text displayed in the dialog when top sites limit is reached. -->
-    <string name="top_sites_max_limit_content_2">Evit ouzhpennañ ul lec’hienn gwellañ eo ret deoc’h dilemel unan. Stokit ha dalc’hit al lec’hienn ha dibabit dilemel.</string>
+    <string moz:RemovedIn="101" name="top_sites_max_limit_content_2" tools:ignore="UnusedResources">Evit ouzhpennañ ul lec’hienn gwellañ eo ret deoc’h dilemel unan. Stokit ha dalc’hit al lec’hienn ha dibabit dilemel.</string>
+    <!-- Content description text displayed in the dialog when shortcut limit is reached. -->
+    <string name="shortcut_max_limit_content">Evit ouzhpennañ ur verradenn nevez, dilamit unan all. Stokit ha dalc’hit al lec’hienn ha dibabit dilemel.</string>
     <!-- Confirmation dialog button text when top sites limit is reached. -->
     <string name="top_sites_max_limit_confirmation_button">Mat, komprenet am eus</string>
 
-    <!-- Label for the preference to show the shortcuts for the most visited top sites on the homepage -->
-    <string moz:removedIn="98" name="top_sites_toggle_top_recent_sites_3" tools:ignore="UnusedResources">Lec’hiennoù gweladennet ar muiañ</string>
-
     <!-- Label for the preference to show the shortcuts for the most visited top sites on the homepage -->
     <string name="top_sites_toggle_top_recent_sites_4">Berradennoù</string>
 	<!-- Title text displayed in the rename top site dialog. -->
 	<string name="top_sites_rename_dialog_title">Anv</string>
 	<!-- Hint for renaming title of a top site -->
-	<string name="top_site_name_hint">Anv al lec’hienn pennañ</string>
+	<string moz:RemovedIn="101" name="top_site_name_hint" tools:ignore="UnusedResources">Anv al lec’hienn pennañ</string>
+    <!-- Hint for renaming title of a shortcut -->
+    <string name="shortcut_name_hint">Anv ar verradenn</string>
 	<!-- Button caption to confirm the renaming of the top site. -->
 	<string name="top_sites_rename_dialog_ok">Mat eo</string>
 	<!-- Dialog button text for canceling the rename top site prompt. -->
@@ -1816,4 +1841,9 @@
     <string name="pocket_stories_feature_caption">Ezel eus familh Firefox. %s</string>
     <!-- Clickable text for opening an external link for more information about Pocket. -->
     <string name="pocket_stories_feature_learn_more">Gouzout hiroc’h</string>
+
+    <!-- Snackbar message for enrolling in a Nimbus experiment from the secret settings when Studies preference is Off.-->
+    <string name="experiments_snackbar">Gweredekaet ar pellventerezh evit kas roadennoù.</string>
+    <!-- Snackbar button text to navigate to telemetry settings.-->
+    <string name="experiments_snackbar_button">Mont d’an arventennoù</string>
 </resources>