diff --git a/l10n/ach/viewer.properties b/l10n/ach/viewer.properties
index ecb614fcc..110e317fc 100644
--- a/l10n/ach/viewer.properties
+++ b/l10n/ach/viewer.properties
@@ -39,6 +39,11 @@ open_file.title=Yab Pwail
 open_file_label=Yab
 print.title=Go
 print_label=Go
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 
 # Secondary toolbar and context menu
 tools.title=Gintic
@@ -126,6 +131,7 @@ thumbs_label=Cal
 findbar.title=Nong iye gin acoya
 findbar_label=Nong
 
+# LOCALIZATION NOTE (page_landmark): "{{page}}" will be replaced by the page number.
 # Thumbnails panel item (tooltip and alt text for images)
 # LOCALIZATION NOTE (thumb_page_title): "{{page}}" will be replaced by the page
 # number.
@@ -141,10 +147,18 @@ find_previous.title=Nong timme pa lok mukato
 find_previous_label=Mukato
 find_next.title=Nong timme pa lok malubo
 find_next_label=Malubo
-find_highlight=Wer weng
+find_highlight=Ket Lanyut I Weng
 find_match_case_label=Lok marwate
 find_reached_top=Oo iwi gin acoya, omede ki i tere
 find_reached_bottom=Oo i agiki me gin acoya, omede ki iwiye
+# LOCALIZATION NOTE (find_match_count): The supported plural forms are
+# [one|two|few|many|other], with [other] as the default value.
+# "{{current}}" and "{{total}}" will be replaced by a number representing the
+# index of the currently active find result, respectively a number representing
+# the total number of matches in the document.
+# LOCALIZATION NOTE (find_match_count_limit): The supported plural forms are
+# [zero|one|two|few|many|other], with [other] as the default value.
+# "{{limit}}" will be replaced by a numerical value.
 find_not_found=Lok pe ononge
 
 # Predefined zoom values
@@ -156,13 +170,16 @@ page_scale_actual=Dite kikome
 # numerical scale value.
 page_scale_percent={{scale}}%
 
+# Loading indicator messages
 loading_error=Bal otime kun cano PDF.
 invalid_file_error=Pwail me PDF ma pe atir onyo obale woko.
 missing_file_error=Pwail me PDF tye ka rem.
 unexpected_response_error=Lagam mape kigeno pa lapok tic.
-
 rendering_error=Bal otime i kare me nyuto pot buk.
 
+# LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
+# replaced by the modification date, and time, of the annotation.
+
 # LOCALIZATION NOTE (text_annotation_type.alt): This is used as a tooltip.
 # "{{type}}" will be replaced with an annotation type from a list defined in
 # the PDF spec (32000-1:2008 Table 169 – Annotation types).
@@ -177,3 +194,10 @@ printing_not_supported=Ciko: Layeny ma pe teno goyo liweng.
 printing_not_ready=Ciko: PDF pe ocane weng me agoya.
 web_fonts_disabled=Kijuko dit pa coc me kakube woko: pe romo tic ki dit pa coc me PDF ma kiketo i kine.
 
+# Editor
+
+
+
+# Editor Parameters
+
+# Editor aria
diff --git a/l10n/be/viewer.properties b/l10n/be/viewer.properties
index bf00ca134..77b3cbc69 100644
--- a/l10n/be/viewer.properties
+++ b/l10n/be/viewer.properties
@@ -41,6 +41,11 @@ print.title=Друкаваць
 print_label=Друкаваць
 save.title=Захаваць
 save_label=Захаваць
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Сцягнуць
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Сцягнуць
 bookmark1.title=Дзейная старонка (паглядзець URL-адрас з дзейнай старонкі)
 bookmark1_label=Цяперашняя старонка
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/cs/viewer.properties b/l10n/cs/viewer.properties
index 7e38db465..91be049b3 100644
--- a/l10n/cs/viewer.properties
+++ b/l10n/cs/viewer.properties
@@ -41,6 +41,11 @@ print.title=Vytiskne dokument
 print_label=Vytisknout
 save.title=Uložit
 save_label=Uložit
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Stáhnout
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Stáhnout
 bookmark1.title=Aktuální stránka (zobrazit URL od aktuální stránky)
 bookmark1_label=Aktuální stránka
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/cy/viewer.properties b/l10n/cy/viewer.properties
index 3e4ced6c7..cd051d4aa 100644
--- a/l10n/cy/viewer.properties
+++ b/l10n/cy/viewer.properties
@@ -41,6 +41,11 @@ print.title=Argraffu
 print_label=Argraffu
 save.title=Cadw
 save_label=Cadw
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Llwytho i Lawr
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Llwytho i Lawr
 bookmark1.title=Tudalen Gyfredol (Gweld URL o'r Dudalen Gyfredol)
 bookmark1_label=Tudalen Gyfredol
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/de/viewer.properties b/l10n/de/viewer.properties
index cf864506e..5379be012 100644
--- a/l10n/de/viewer.properties
+++ b/l10n/de/viewer.properties
@@ -41,6 +41,11 @@ print.title=Drucken
 print_label=Drucken
 save.title=Speichern
 save_label=Speichern
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Herunterladen
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Herunterladen
 bookmark1.title=Aktuelle Seite (URL von aktueller Seite anzeigen)
 bookmark1_label=Aktuelle Seite
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/dsb/viewer.properties b/l10n/dsb/viewer.properties
index 94e3e2a54..ac64ace58 100644
--- a/l10n/dsb/viewer.properties
+++ b/l10n/dsb/viewer.properties
@@ -41,6 +41,11 @@ print.title=Śišćaś
 print_label=Śišćaś
 save.title=Składowaś
 save_label=Składowaś
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Ześěgnuś
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Ześěgnuś
 bookmark1.title=Aktualny bok (URL z aktualnego boka pokazaś)
 bookmark1_label=Aktualny bok
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/el/viewer.properties b/l10n/el/viewer.properties
index 3c670661c..47b1f8e29 100644
--- a/l10n/el/viewer.properties
+++ b/l10n/el/viewer.properties
@@ -41,6 +41,11 @@ print.title=Εκτύπωση
 print_label=Εκτύπωση
 save.title=Αποθήκευση
 save_label=Αποθήκευση
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Λήψη
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Λήψη
 bookmark1.title=Τρέχουσα σελίδα (Προβολή URL από τρέχουσα σελίδα)
 bookmark1_label=Τρέχουσα σελίδα
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/en-GB/viewer.properties b/l10n/en-GB/viewer.properties
index 350b686c6..bab52e525 100644
--- a/l10n/en-GB/viewer.properties
+++ b/l10n/en-GB/viewer.properties
@@ -41,6 +41,11 @@ print.title=Print
 print_label=Print
 save.title=Save
 save_label=Save
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Download
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Download
 bookmark1.title=Current Page (View URL from Current Page)
 bookmark1_label=Current Page
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/eo/viewer.properties b/l10n/eo/viewer.properties
index e4787d02f..1089434ac 100644
--- a/l10n/eo/viewer.properties
+++ b/l10n/eo/viewer.properties
@@ -39,9 +39,13 @@ open_file.title=Malfermi dosieron
 open_file_label=Malfermi
 print.title=Presi
 print_label=Presi
-
 save.title=Konservi
 save_label=Konservi
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Elŝuti
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Elŝuti
 bookmark1.title=Nuna paĝo (Montri adreson de la nuna paĝo)
 bookmark1_label=Nuna paĝo
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
@@ -216,7 +220,6 @@ loading_error=Okazis eraro dum la ŝargado de la PDF dosiero.
 invalid_file_error=Nevalida aŭ difektita PDF dosiero.
 missing_file_error=Mankas dosiero PDF.
 unexpected_response_error=Neatendita respondo de servilo.
-
 rendering_error=Okazis eraro dum la montro de la paĝo.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -243,6 +246,9 @@ editor_free_text2_label=Teksto
 editor_ink2.title=Desegni
 editor_ink2_label=Desegni
 
+editor_stamp.title=Aldoni bildon
+editor_stamp_label=Aldoni bildon
+
 free_text2_default_content=Ektajpi…
 
 # Editor Parameters
diff --git a/l10n/es-AR/viewer.properties b/l10n/es-AR/viewer.properties
index cec91a3a1..383c3054d 100644
--- a/l10n/es-AR/viewer.properties
+++ b/l10n/es-AR/viewer.properties
@@ -41,6 +41,11 @@ print.title=Imprimir
 print_label=Imprimir
 save.title=Guardar
 save_label=Guardar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Descargar
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Descargar
 bookmark1.title=Página actual (Ver URL de la página actual)
 bookmark1_label=Página actual
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/es-CL/viewer.properties b/l10n/es-CL/viewer.properties
index e8e4b9b58..e7dfcb0c1 100644
--- a/l10n/es-CL/viewer.properties
+++ b/l10n/es-CL/viewer.properties
@@ -41,6 +41,11 @@ print.title=Imprimir
 print_label=Imprimir
 save.title=Guardar
 save_label=Guardar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Descargar
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Descargar
 bookmark1.title=Página actual (Ver URL de la página actual)
 bookmark1_label=Página actual
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/es-ES/viewer.properties b/l10n/es-ES/viewer.properties
index 79aa0024f..119cdbc4e 100644
--- a/l10n/es-ES/viewer.properties
+++ b/l10n/es-ES/viewer.properties
@@ -39,13 +39,13 @@ open_file.title=Abrir archivo
 open_file_label=Abrir
 print.title=Imprimir
 print_label=Imprimir
-
 save.title=Guardar
 save_label=Guardar
 bookmark1.title=Página actual (Ver URL de la página actual)
 bookmark1_label=Página actual
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Abrir en aplicación
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Abrir en aplicación
 
 # Secondary toolbar and context menu
@@ -215,7 +215,6 @@ loading_error=Ocurrió un error al cargar el PDF.
 invalid_file_error=Fichero PDF no válido o corrupto.
 missing_file_error=No hay fichero PDF.
 unexpected_response_error=Respuesta inesperada del servidor.
-
 rendering_error=Ocurrió un error al renderizar la página.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +241,9 @@ editor_free_text2_label=Texto
 editor_ink2.title=Dibujar
 editor_ink2_label=Dibujar
 
+editor_stamp.title=Añadir una imagen
+editor_stamp_label=Añadir una imagen
+
 free_text2_default_content=Empezar a escribir…
 
 # Editor Parameters
diff --git a/l10n/eu/viewer.properties b/l10n/eu/viewer.properties
index 8a0f8ee71..5e2cbe390 100644
--- a/l10n/eu/viewer.properties
+++ b/l10n/eu/viewer.properties
@@ -39,9 +39,13 @@ open_file.title=Ireki fitxategia
 open_file_label=Ireki
 print.title=Inprimatu
 print_label=Inprimatu
-
 save.title=Gorde
 save_label=Gorde
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Deskargatu
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Deskargatu
 bookmark1.title=Uneko orria (ikusi uneko orriaren URLa)
 bookmark1_label=Uneko orria
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
@@ -216,7 +220,6 @@ loading_error=Errorea gertatu da PDFa kargatzean.
 invalid_file_error=PDF fitxategi baliogabe edo hondatua.
 missing_file_error=PDF fitxategia falta da.
 unexpected_response_error=Espero gabeko zerbitzariaren erantzuna.
-
 rendering_error=Errorea gertatu da orria errendatzean.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -243,6 +246,9 @@ editor_free_text2_label=Testua
 editor_ink2.title=Marrazkia
 editor_ink2_label=Marrazkia
 
+editor_stamp.title=Gehitu irudia
+editor_stamp_label=Gehitu irudia
+
 free_text2_default_content=Hasi idazten…
 
 # Editor Parameters
diff --git a/l10n/fi/viewer.properties b/l10n/fi/viewer.properties
index d16fe18d1..00ebb78d7 100644
--- a/l10n/fi/viewer.properties
+++ b/l10n/fi/viewer.properties
@@ -39,12 +39,10 @@ open_file.title=Avaa tiedosto
 open_file_label=Avaa
 print.title=Tulosta
 print_label=Tulosta
-
 save.title=Tallenna
 save_label=Tallenna
 bookmark1.title=Nykyinen sivu (Näytä URL-osoite nykyiseltä sivulta)
 bookmark1_label=Nykyinen sivu
-
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Avaa sovelluksessa
 # LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
@@ -217,7 +215,6 @@ loading_error=Tapahtui virhe ladattaessa PDF-tiedostoa.
 invalid_file_error=Virheellinen tai vioittunut PDF-tiedosto.
 missing_file_error=Puuttuva PDF-tiedosto.
 unexpected_response_error=Odottamaton vastaus palvelimelta.
-
 rendering_error=Tapahtui virhe piirrettäessä sivua.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -244,6 +241,9 @@ editor_free_text2_label=Teksti
 editor_ink2.title=Piirros
 editor_ink2_label=Piirros
 
+editor_stamp.title=Lisää kuva
+editor_stamp_label=Lisää kuva
+
 free_text2_default_content=Aloita kirjoittaminen…
 
 # Editor Parameters
diff --git a/l10n/fr/viewer.properties b/l10n/fr/viewer.properties
index fea58596e..ea1cb2ffb 100644
--- a/l10n/fr/viewer.properties
+++ b/l10n/fr/viewer.properties
@@ -41,6 +41,11 @@ print.title=Imprimer
 print_label=Imprimer
 save.title=Enregistrer
 save_label=Enregistrer
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Télécharger
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Télécharger
 bookmark1.title=Page courante (montrer l’adresse de la page courante)
 bookmark1_label=Page courante
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/fur/viewer.properties b/l10n/fur/viewer.properties
index db6331c30..4e0f3125e 100644
--- a/l10n/fur/viewer.properties
+++ b/l10n/fur/viewer.properties
@@ -41,6 +41,11 @@ print.title=Stampe
 print_label=Stampe
 save.title=Salve
 save_label=Salve
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Discjame
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Discjame
 bookmark1.title=Pagjine corinte (mostre URL de pagjine atuâl)
 bookmark1_label=Pagjine corinte
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/gn/viewer.properties b/l10n/gn/viewer.properties
index 0d383b3aa..1da0b084f 100644
--- a/l10n/gn/viewer.properties
+++ b/l10n/gn/viewer.properties
@@ -41,6 +41,11 @@ print.title=Monguatia
 print_label=Monguatia
 save.title=Ñongatu
 save_label=Ñongatu
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Mboguejy
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Mboguejy
 bookmark1.title=Kuatiarogue ag̃agua (Ehecha URL kuatiarogue ag̃agua)
 bookmark1_label=Kuatiarogue Ag̃agua
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/he/viewer.properties b/l10n/he/viewer.properties
index 539091669..b35d64a2e 100644
--- a/l10n/he/viewer.properties
+++ b/l10n/he/viewer.properties
@@ -41,6 +41,11 @@ print.title=הדפסה
 print_label=הדפסה
 save.title=שמירה
 save_label=שמירה
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=הורדה
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=הורדה
 bookmark1_label=עמוד נוכחי
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=פתיחה ביישום
diff --git a/l10n/hi-IN/viewer.properties b/l10n/hi-IN/viewer.properties
index 7484050ee..97f1da170 100644
--- a/l10n/hi-IN/viewer.properties
+++ b/l10n/hi-IN/viewer.properties
@@ -39,6 +39,10 @@ open_file.title=फ़ाइल खोलें
 open_file_label=\u0020खोलें
 print.title=छापें
 print_label=\u0020छापें
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
+open_in_app.title=ऐप में खोलें
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
+open_in_app_label=ऐप में खोलें
 
 # Secondary toolbar and context menu
 tools.title=औज़ार
@@ -135,6 +139,7 @@ thumbs_label=लघु छवि
 findbar.title=\u0020दस्तावेज़ में ढूँढ़ें
 findbar_label=ढूँढें
 
+# LOCALIZATION NOTE (page_landmark): "{{page}}" will be replaced by the page number.
 # Thumbnails panel item (tooltip and alt text for images)
 # LOCALIZATION NOTE (thumb_page_title): "{{page}}" will be replaced by the page
 # number.
@@ -187,11 +192,11 @@ page_scale_actual=वास्तविक आकार
 # numerical scale value.
 page_scale_percent={{scale}}%
 
+# Loading indicator messages
 loading_error=PDF लोड करते समय एक त्रुटि हुई.
 invalid_file_error=अमान्य या भ्रष्ट PDF फ़ाइल.
 missing_file_error=\u0020अनुपस्थित PDF फ़ाइल.
 unexpected_response_error=अप्रत्याशित सर्वर प्रतिक्रिया.
-
 rendering_error=पृष्ठ रेंडरिंग के दौरान त्रुटि आई.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -212,3 +217,11 @@ printing_not_supported=चेतावनी: इस ब्राउज़र 
 printing_not_ready=चेतावनी: PDF छपाई के लिए पूरी तरह से लोड नहीं है.
 web_fonts_disabled=वेब फॉन्ट्स निष्क्रिय हैं: अंतःस्थापित PDF फॉन्टस के उपयोग में असमर्थ.
 
+# Editor
+
+
+
+# Editor Parameters
+editor_free_text_color=रंग
+
+# Editor aria
diff --git a/l10n/hsb/viewer.properties b/l10n/hsb/viewer.properties
index 41f648b3d..68a512476 100644
--- a/l10n/hsb/viewer.properties
+++ b/l10n/hsb/viewer.properties
@@ -41,6 +41,11 @@ print.title=Ćišćeć
 print_label=Ćišćeć
 save.title=Składować
 save_label=Składować
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Sćahnyć
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Sćahnyć
 bookmark1.title=Aktualna strona (URL z aktualneje strony pokazać)
 bookmark1_label=Aktualna strona
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/hu/viewer.properties b/l10n/hu/viewer.properties
index fe8b57f9b..4bcfc9dfb 100644
--- a/l10n/hu/viewer.properties
+++ b/l10n/hu/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Fájl megnyitása
 open_file_label=Megnyitás
 print.title=Nyomtatás
 print_label=Nyomtatás
-
 save.title=Mentés
 save_label=Mentés
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Letöltés
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Letöltés
 bookmark1.title=Jelenlegi oldal (webcím megtekintése a jelenlegi oldalról)
 bookmark1_label=Jelenlegi oldal
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Megnyitás alkalmazásban
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Megnyitás alkalmazásban
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Hiba történt a PDF betöltésekor.
 invalid_file_error=Érvénytelen vagy sérült PDF fájl.
 missing_file_error=Hiányzó PDF fájl.
 unexpected_response_error=Váratlan kiszolgálóválasz.
-
 rendering_error=Hiba történt az oldal feldolgozása közben.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Szöveg
 editor_ink2.title=Rajzolás
 editor_ink2_label=Rajzolás
 
+editor_stamp.title=Kép hozzáadása
+editor_stamp_label=Kép hozzáadása
+
 free_text2_default_content=Kezdjen el gépelni…
 
 # Editor Parameters
diff --git a/l10n/ia/viewer.properties b/l10n/ia/viewer.properties
index 9daa7493a..df37087d2 100644
--- a/l10n/ia/viewer.properties
+++ b/l10n/ia/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Aperir le file
 open_file_label=Aperir
 print.title=Imprimer
 print_label=Imprimer
-
 save.title=Salvar
 save_label=Salvar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Discargar
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Discargar
 bookmark1.title=Pagina actual (vide le URL del pagina actual)
 bookmark1_label=Pagina actual
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Aperir in app
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Aperir in app
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Un error occurreva durante que on cargava le file PDF.
 invalid_file_error=File PDF corrumpite o non valide.
 missing_file_error=File PDF mancante.
 unexpected_response_error=Responsa del servitor inexpectate.
-
 rendering_error=Un error occurreva durante que on processava le pagina.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Texto
 editor_ink2.title=Designar
 editor_ink2_label=Designar
 
+editor_stamp.title=Adder un imagine
+editor_stamp_label=Adder un imagine
+
 free_text2_default_content=Comenciar a scriber…
 
 # Editor Parameters
diff --git a/l10n/is/viewer.properties b/l10n/is/viewer.properties
index b63457508..88e6857e4 100644
--- a/l10n/is/viewer.properties
+++ b/l10n/is/viewer.properties
@@ -41,6 +41,11 @@ print.title=Prenta
 print_label=Prenta
 save.title=Vista
 save_label=Vista
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Sækja
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Sækja
 bookmark1.title=Núverandi síða (Skoða vefslóð frá núverandi síðu)
 bookmark1_label=Núverandi síða
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/it/viewer.properties b/l10n/it/viewer.properties
index a60ca8684..4c70dfe2f 100644
--- a/l10n/it/viewer.properties
+++ b/l10n/it/viewer.properties
@@ -39,6 +39,9 @@ print_label = Stampa
 
 save.title = Salva
 save_label = Salva
+download_button.title = Scarica
+download_button_label = Scarica
+
 bookmark1.title = Pagina corrente (mostra URL della pagina corrente)
 bookmark1_label = Pagina corrente
 open_in_app.title = Apri in app
@@ -208,3 +211,4 @@ editor_free_text2_aria_label = Editor di testo
 editor_ink2_aria_label = Editor disegni
 editor_ink_canvas_aria_label = Immagine creata dall’utente
 
+
diff --git a/l10n/ja/viewer.properties b/l10n/ja/viewer.properties
index 0d68559d8..ca976e4ab 100644
--- a/l10n/ja/viewer.properties
+++ b/l10n/ja/viewer.properties
@@ -39,11 +39,6 @@ open_file.title=ファイルを開きます
 open_file_label=開く
 print.title=印刷します
 print_label=印刷
-download.title=ダウンロードします
-download_label=ダウンロード
-bookmark.title=現在のビューの URL です (コピーまたは新しいウィンドウに開く)
-bookmark_label=現在のビュー
-
 save.title=保存します
 save_label=保存
 bookmark1.title=現在のページの URL です (現在のページを表示する URL)
@@ -207,24 +202,6 @@ find_match_count_limit[many]={{limit}} 件以上一致
 find_match_count_limit[other]={{limit}} 件以上一致
 find_not_found=見つかりませんでした
 
-# Error panel labels
-error_more_info=詳細情報
-error_less_info=詳細情報を隠す
-error_close=閉じる
-# LOCALIZATION NOTE (error_version_info): "{{version}}" and "{{build}}" will be
-# replaced by the PDF.JS version and build ID.
-error_version_info=PDF.js v{{version}} (ビルド: {{build}})
-# LOCALIZATION NOTE (error_message): "{{message}}" will be replaced by an
-# english string describing the error.
-error_message=メッセージ: {{message}}
-# LOCALIZATION NOTE (error_stack): "{{stack}}" will be replaced with a stack
-# trace.
-error_stack=スタック: {{stack}}
-# LOCALIZATION NOTE (error_file): "{{file}}" will be replaced with a filename
-error_file=ファイル: {{file}}
-# LOCALIZATION NOTE (error_line): "{{line}}" will be replaced with a line number
-error_line=行: {{line}}
-
 # Predefined zoom values
 page_scale_width=幅に合わせる
 page_scale_fit=ページのサイズに合わせる
@@ -234,15 +211,11 @@ page_scale_actual=実際のサイズ
 # numerical scale value.
 page_scale_percent={{scale}}%
 
-# Loading indicator messages
-loading=読み込み中...
-
 # Loading indicator messages
 loading_error=PDF の読み込み中にエラーが発生しました。
 invalid_file_error=無効または破損した PDF ファイル。
 missing_file_error=PDF ファイルが見つかりません。
 unexpected_response_error=サーバーから予期せぬ応答がありました。
-
 rendering_error=ページのレンダリング中にエラーが発生しました。
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -269,6 +242,9 @@ editor_free_text2_label=フリーテキスト注釈
 editor_ink2.title=インク注釈
 editor_ink2_label=インク注釈
 
+editor_stamp.title=画像を追加します
+editor_stamp_label=画像を追加
+
 free_text2_default_content=テキストを入力してください...
 
 # Editor Parameters
diff --git a/l10n/kk/viewer.properties b/l10n/kk/viewer.properties
index 9f8ad1043..f613804f7 100644
--- a/l10n/kk/viewer.properties
+++ b/l10n/kk/viewer.properties
@@ -41,6 +41,11 @@ print.title=Баспаға шығару
 print_label=Баспаға шығару
 save.title=Сақтау
 save_label=Сақтау
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Жүктеп алу
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Жүктеп алу
 bookmark1.title=Ағымдағы бет (Ағымдағы беттен URL адресін көру)
 bookmark1_label=Ағымдағы бет
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/ko/viewer.properties b/l10n/ko/viewer.properties
index add4201ef..4867f7719 100644
--- a/l10n/ko/viewer.properties
+++ b/l10n/ko/viewer.properties
@@ -41,6 +41,11 @@ print.title=인쇄
 print_label=인쇄
 save.title=저장
 save_label=저장
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=다운로드
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=다운로드
 bookmark1.title=현재 페이지 (현재 페이지에서 URL 보기)
 bookmark1_label=현재 페이지
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/mk/viewer.properties b/l10n/mk/viewer.properties
index 842999ba9..13cc47bd1 100644
--- a/l10n/mk/viewer.properties
+++ b/l10n/mk/viewer.properties
@@ -19,11 +19,14 @@ next.title=Следна страница
 next_label=Следна
 
 # LOCALIZATION NOTE (page.title): The tooltip for the pageNumber input.
+page.title=Страница
 # LOCALIZATION NOTE (of_pages): "{{pagesCount}}" will be replaced by a number
 # representing the total number of pages in the document.
+of_pages=од {{pagesCount}}
 # LOCALIZATION NOTE (page_of_pages): "{{pageNumber}}" and "{{pagesCount}}"
 # will be replaced by a number representing the currently visible page,
 # respectively a number representing the total number of pages in the document.
+page_of_pages=({{pageNumber}} од {{pagesCount}})
 
 zoom_out.title=Намалување
 zoom_out_label=Намали
@@ -36,31 +39,78 @@ open_file.title=Отворање датотека
 open_file_label=Отвори
 print.title=Печатење
 print_label=Печати
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 
 # Secondary toolbar and context menu
 tools.title=Алатки
+tools_label=Алатки
+first_page.title=Оди до првата страница
+first_page_label=Оди до првата страница
+last_page.title=Оди до последната страница
+last_page_label=Оди до последната страница
+page_rotate_cw.title=Ротирај по стрелките на часовникот
+page_rotate_cw_label=Ротирај по стрелките на часовникот
+page_rotate_ccw.title=Ротирај спротивно од стрелките на часовникот
+page_rotate_ccw_label=Ротирај спротивно од стрелките на часовникот
 
+cursor_text_select_tool.title=Овозможи алатка за избор на текст
+cursor_text_select_tool_label=Алатка за избор на текст
 
 
 
 # Document properties dialog box
+document_properties.title=Својства на документот…
+document_properties_label=Својства на документот…
+document_properties_file_name=Име на датотека:
+document_properties_file_size=Големина на датотеката:
 # LOCALIZATION NOTE (document_properties_kb): "{{size_kb}}" and "{{size_b}}"
 # will be replaced by the PDF file size in kilobytes, respectively in bytes.
+document_properties_kb={{size_kb}} КБ ({{size_b}} бајти)
 # LOCALIZATION NOTE (document_properties_mb): "{{size_mb}}" and "{{size_b}}"
 # will be replaced by the PDF file size in megabytes, respectively in bytes.
+document_properties_mb={{size_mb}} МБ ({{size_b}} бајти)
+document_properties_title=Наслов:
+document_properties_author=Автор:
+document_properties_subject=Тема:
+document_properties_keywords=Клучни зборови:
+document_properties_creation_date=Датум на создавање:
+document_properties_modification_date=Датум на промена:
 # LOCALIZATION NOTE (document_properties_date_string): "{{date}}" and "{{time}}"
 # will be replaced by the creation/modification date, and time, of the PDF file.
+document_properties_date_string={{date}}, {{time}}
+document_properties_creator=Креатор:
+document_properties_version=Верзија на PDF:
+document_properties_page_count=Број на страници:
+document_properties_page_size=Големина на страница:
+document_properties_page_size_unit_inches=инч
+document_properties_page_size_unit_millimeters=мм
+document_properties_page_size_orientation_portrait=портрет
+document_properties_page_size_orientation_landscape=пејзаж
+document_properties_page_size_name_a3=A3
+document_properties_page_size_name_a4=A4
+document_properties_page_size_name_letter=Писмо
 # LOCALIZATION NOTE (document_properties_page_size_dimension_string):
 # "{{width}}", "{{height}}", {{unit}}, and {{orientation}} will be replaced by
 # the size, respectively their unit of measurement and orientation, of the (current) page.
+document_properties_page_size_dimension_string={{width}} × {{height}} {{unit}} ({{orientation}})
 # LOCALIZATION NOTE (document_properties_page_size_dimension_name_string):
 # "{{width}}", "{{height}}", {{unit}}, {{name}}, and {{orientation}} will be replaced by
 # the size, respectively their unit of measurement, name, and orientation, of the (current) page.
+document_properties_page_size_dimension_name_string={{width}} × {{height}} {{unit}} ({{name}}, {{orientation}})
 # LOCALIZATION NOTE (document_properties_linearized): The linearization status of
 # the document; usually called "Fast Web View" in English locales of Adobe software.
+document_properties_linearized_yes=Да
+document_properties_linearized_no=Не
+document_properties_close=Затвори
 
+print_progress_message=Документ се подготвува за печатење…
 # LOCALIZATION NOTE (print_progress_percent): "{{progress}}" will be replaced by
 # a numerical per cent value.
+print_progress_percent={{progress}}%
 print_progress_close=Откажи
 
 # Tooltips and alt text for side panel toolbar buttons
@@ -68,11 +118,14 @@ print_progress_close=Откажи
 # tooltips)
 toggle_sidebar.title=Вклучи странична лента
 toggle_sidebar_label=Вклучи странична лента
+document_outline_label=Содржина на документот
+attachments.title=Прикажи додатоци
 thumbs.title=Прикажување на икони
 thumbs_label=Икони
 findbar.title=Најди во документот
 findbar_label=Најди
 
+# LOCALIZATION NOTE (page_landmark): "{{page}}" will be replaced by the page number.
 # Thumbnails panel item (tooltip and alt text for images)
 # LOCALIZATION NOTE (thumb_page_title): "{{page}}" will be replaced by the page
 # number.
@@ -82,14 +135,38 @@ thumb_page_title=Страница {{page}}
 thumb_page_canvas=Икона од страница {{page}}
 
 # Find panel button title and messages
+find_input.title=Пронајди
+find_input.placeholder=Пронајди во документот…
 find_previous.title=Најди ја предходната појава на фразата
 find_previous_label=Претходно
 find_next.title=Најди ја следната појава на фразата
 find_next_label=Следно
 find_highlight=Означи сѐ
 find_match_case_label=Токму така
+find_entire_word_label=Цели зборови
 find_reached_top=Барањето стигна до почетокот на документот и почнува од крајот
 find_reached_bottom=Барањето стигна до крајот на документот и почнува од почеток
+# LOCALIZATION NOTE (find_match_count): The supported plural forms are
+# [one|two|few|many|other], with [other] as the default value.
+# "{{current}}" and "{{total}}" will be replaced by a number representing the
+# index of the currently active find result, respectively a number representing
+# the total number of matches in the document.
+find_match_count={[ plural(total) ]}
+find_match_count[one]={{current}} од {{total}} совпаѓања
+find_match_count[two]={{current}} од {{total}} совпаѓања
+find_match_count[few]={{current}} од {{total}} совпаѓања
+find_match_count[many]={{current}} од {{total}} совпаѓања
+find_match_count[other]={{current}} од {{total}} совпаѓања
+# LOCALIZATION NOTE (find_match_count_limit): The supported plural forms are
+# [zero|one|two|few|many|other], with [other] as the default value.
+# "{{limit}}" will be replaced by a numerical value.
+find_match_count_limit={[ plural(limit) ]}
+find_match_count_limit[zero]=Повеќе од {{limit}} совпаѓања
+find_match_count_limit[one]=Повеќе од {{limit}} совпаѓање
+find_match_count_limit[two]=Повеќе од {{limit}} совпаѓања
+find_match_count_limit[few]=Повеќе од {{limit}} совпаѓања
+find_match_count_limit[many]=Повеќе од {{limit}} совпаѓања
+find_match_count_limit[other]=Повеќе од {{limit}} совпаѓања
 find_not_found=Фразата не е пронајдена
 
 # Predefined zoom values
@@ -99,20 +176,36 @@ page_scale_auto=Автоматска големина
 page_scale_actual=Вистинска големина
 # LOCALIZATION NOTE (page_scale_percent): "{{scale}}" will be replaced by a
 # numerical scale value.
+page_scale_percent={{scale}}%
 
+# Loading indicator messages
 loading_error=Настана грешка при вчитувањето на PDF-от.
 invalid_file_error=Невалидна или корумпирана PDF датотека.
 missing_file_error=Недостасува PDF документ.
-
+unexpected_response_error=Неочекуван одговор од серверот.
 rendering_error=Настана грешка при прикажувањето на страницата.
 
+# LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
+# replaced by the modification date, and time, of the annotation.
+annotation_date_string={{date}}, {{time}}
+
 # LOCALIZATION NOTE (text_annotation_type.alt): This is used as a tooltip.
 # "{{type}}" will be replaced with an annotation type from a list defined in
 # the PDF spec (32000-1:2008 Table 169 – Annotation types).
 # Some common types are e.g.: "Check", "Text", "Comment", "Note"
+password_label=Внесете ја лозинката за да ја отворите оваа датотека.
+password_invalid=Невалидна лозинка. Обидете се повторно.
+password_ok=Во ред
 password_cancel=Откажи
 
 printing_not_supported=Предупредување: Печатењето не е целосно поддржано во овој прелистувач.
 printing_not_ready=Предупредување: PDF документот не е целосно вчитан за печатење.
 web_fonts_disabled=Интернет фонтовите се оневозможени: не може да се користат вградените PDF фонтови.
 
+# Editor
+
+
+
+# Editor Parameters
+
+# Editor aria
diff --git a/l10n/nn-NO/viewer.properties b/l10n/nn-NO/viewer.properties
index 4f3746204..da26ce750 100644
--- a/l10n/nn-NO/viewer.properties
+++ b/l10n/nn-NO/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Opne fil
 open_file_label=Opne
 print.title=Skriv ut
 print_label=Skriv ut
-
 save.title=Lagre
 save_label=Lagre
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Last ned
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Last ned
 bookmark1.title=Gjeldande side (sjå URL frå gjeldande side)
 bookmark1_label=Gjeldande side
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Opne i app
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Opne i app
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Ein feil oppstod ved lasting av PDF.
 invalid_file_error=Ugyldig eller korrupt PDF-fil.
 missing_file_error=Manglande PDF-fil.
 unexpected_response_error=Uventa tenarrespons.
-
 rendering_error=Ein feil oppstod under vising av sida.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Tekst
 editor_ink2.title=Teikne
 editor_ink2_label=Teikne
 
+editor_stamp.title=Legg til eit bilde
+editor_stamp_label=Legg til eit bilde
+
 free_text2_default_content=Byrje å skrive…
 
 # Editor Parameters
diff --git a/l10n/oc/viewer.properties b/l10n/oc/viewer.properties
index f64200bba..4745bdd13 100644
--- a/l10n/oc/viewer.properties
+++ b/l10n/oc/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Dobrir lo fichièr
 open_file_label=Dobrir
 print.title=Imprimir
 print_label=Imprimir
-
 save.title=Enregistrar
 save_label=Enregistrar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Telecargar
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Telecargar
 bookmark1.title=Pagina actuala (mostrar l’adreça de la pagina actuala)
 bookmark1_label=Pagina actuala
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Dobrir amb l’aplicacion
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Dobrir amb l’aplicacion
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Una error s'es producha pendent lo cargament del fichièr PDF.
 invalid_file_error=Fichièr PDF invalid o corromput.
 missing_file_error=Fichièr PDF mancant.
 unexpected_response_error=Responsa de servidor imprevista.
-
 rendering_error=Una error s'es producha pendent l'afichatge de la pagina.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Tèxte
 editor_ink2.title=Dessenhar
 editor_ink2_label=Dessenhar
 
+editor_stamp.title=Ajustar un imatge
+editor_stamp_label=Ajustar un imatge
+
 free_text2_default_content=Començatz d’escriure…
 
 # Editor Parameters
diff --git a/l10n/pl/viewer.properties b/l10n/pl/viewer.properties
index 1fb125d52..92fe5fbcd 100644
--- a/l10n/pl/viewer.properties
+++ b/l10n/pl/viewer.properties
@@ -39,12 +39,15 @@ open_file.title=Otwórz plik
 open_file_label=Otwórz
 print.title=Drukuj
 print_label=Drukuj
-
 save.title=Zapisz
 save_label=Zapisz
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Pobierz
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Pobierz
 bookmark1.title=Bieżąca strona (adres do otwarcia na bieżącej stronie)
 bookmark1_label=Bieżąca strona
-
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Otwórz w aplikacji
 # LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
@@ -217,7 +220,6 @@ loading_error=Podczas wczytywania dokumentu PDF wystąpił błąd.
 invalid_file_error=Nieprawidłowy lub uszkodzony plik PDF.
 missing_file_error=Brak pliku PDF.
 unexpected_response_error=Nieoczekiwana odpowiedź serwera.
-
 rendering_error=Podczas renderowania strony wystąpił błąd.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -244,6 +246,9 @@ editor_free_text2_label=Tekst
 editor_ink2.title=Rysunek
 editor_ink2_label=Rysunek
 
+editor_stamp.title=Dodaj obraz
+editor_stamp_label=Dodaj obraz
+
 free_text2_default_content=Zacznij pisać…
 
 # Editor Parameters
diff --git a/l10n/pt-BR/viewer.properties b/l10n/pt-BR/viewer.properties
index a0451c459..65e56ce8f 100644
--- a/l10n/pt-BR/viewer.properties
+++ b/l10n/pt-BR/viewer.properties
@@ -41,6 +41,11 @@ print.title=Imprimir
 print_label=Imprimir
 save.title=Salvar
 save_label=Salvar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Baixar
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Baixar
 bookmark1.title=Página atual (ver URL da página atual)
 bookmark1_label=Pagina atual
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/pt-PT/viewer.properties b/l10n/pt-PT/viewer.properties
index 7a717ce3b..dcbeefb77 100644
--- a/l10n/pt-PT/viewer.properties
+++ b/l10n/pt-PT/viewer.properties
@@ -41,6 +41,11 @@ print.title=Imprimir
 print_label=Imprimir
 save.title=Guardar
 save_label=Guardar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Transferir
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Transferir
 bookmark1.title=Página atual (ver URL da página atual)
 bookmark1_label=Pagina atual
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/rm/viewer.properties b/l10n/rm/viewer.properties
index 780f99f9b..4276fd33e 100644
--- a/l10n/rm/viewer.properties
+++ b/l10n/rm/viewer.properties
@@ -39,13 +39,16 @@ open_file.title=Avrir datoteca
 open_file_label=Avrir
 print.title=Stampar
 print_label=Stampar
-
 save.title=Memorisar
 save_label=Memorisar
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
 bookmark1.title=Pagina actuala (mussar l'URL da la pagina actuala)
 bookmark1_label=Pagina actuala
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Avrir en ina app
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Avrir en ina app
 
 # Secondary toolbar and context menu
@@ -215,7 +218,6 @@ loading_error=Ina errur è cumparida cun chargiar il PDF.
 invalid_file_error=Datoteca PDF nunvalida u donnegiada.
 missing_file_error=Datoteca PDF manconta.
 unexpected_response_error=Resposta nunspetgada dal server.
-
 rendering_error=Ina errur è cumparida cun visualisar questa pagina.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +244,9 @@ editor_free_text2_label=Text
 editor_ink2.title=Dissegnar
 editor_ink2_label=Dissegnar
 
+editor_stamp.title=Agiuntar in maletg
+editor_stamp_label=Agiuntar in maletg
+
 free_text2_default_content=Cumenzar a tippar…
 
 # Editor Parameters
diff --git a/l10n/ru/viewer.properties b/l10n/ru/viewer.properties
index 3acf683ff..f3914609c 100644
--- a/l10n/ru/viewer.properties
+++ b/l10n/ru/viewer.properties
@@ -41,6 +41,11 @@ print.title=Печать
 print_label=Печать
 save.title=Сохранить
 save_label=Сохранить
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Загрузить
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Загрузить
 bookmark1.title=Текущая страница (просмотр URL-адреса с текущей страницы)
 bookmark1_label=Текущая страница
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/sat/viewer.properties b/l10n/sat/viewer.properties
index b3dc2c0a6..180c2682f 100644
--- a/l10n/sat/viewer.properties
+++ b/l10n/sat/viewer.properties
@@ -41,6 +41,11 @@ print.title=ᱪᱷᱟᱯᱟ
 print_label=ᱪᱷᱟᱯᱟ
 save.title=ᱥᱟᱺᱪᱟᱣ ᱢᱮ
 save_label=ᱥᱟᱺᱪᱟᱣ ᱢᱮ
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=ᱰᱟᱣᱩᱱᱞᱚᱰ
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=ᱰᱟᱣᱩᱱᱞᱚᱰ
 bookmark1.title=ᱱᱤᱛᱚᱜᱟᱜ ᱥᱟᱦᱴᱟ (ᱱᱤᱛᱚᱜᱟᱜ ᱥᱟᱦᱴᱟ ᱠᱷᱚᱱ URL ᱫᱮᱠᱷᱟᱣ ᱢᱮ)
 bookmark1_label=ᱱᱤᱛᱚᱜᱟᱜ ᱥᱟᱦᱴᱟ
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
@@ -241,8 +246,8 @@ editor_free_text2_label=ᱚᱞ
 editor_ink2.title=ᱛᱮᱭᱟᱨ
 editor_ink2_label=ᱛᱮᱭᱟᱨ
 
-editor_stamp.title=ᱢᱤᱫᱴᱟᱹᱝ ᱪᱤᱛᱟᱹᱨ ᱥᱮᱞᱮᱫ ᱢᱮ
-editor_stamp_label=ᱢᱤᱫᱴᱟᱹᱝ ᱪᱤᱛᱟᱹᱨ ᱥᱮᱞᱮᱫ ᱢᱮ
+editor_stamp.title=ᱢᱤᱫᱴᱟᱝ ᱪᱤᱛᱟᱹᱨ ᱥᱮᱞᱮᱫ ᱢᱮ
+editor_stamp_label=ᱢᱤᱫᱴᱟᱝ ᱪᱤᱛᱟᱹᱨ ᱥᱮᱞᱮᱫ ᱢᱮ
 
 free_text2_default_content=ᱚᱞ ᱮᱛᱦᱚᱵ ᱢᱮ …
 
diff --git a/l10n/si/viewer.properties b/l10n/si/viewer.properties
index a865cf906..05dde248e 100644
--- a/l10n/si/viewer.properties
+++ b/l10n/si/viewer.properties
@@ -25,6 +25,7 @@ page.title=පිටුව
 # LOCALIZATION NOTE (page_of_pages): "{{pageNumber}}" and "{{pagesCount}}"
 # will be replaced by a number representing the currently visible page,
 # respectively a number representing the total number of pages in the document.
+page_of_pages=({{pageNumber}} / {{pagesCount}})
 
 zoom_out.title=කුඩාලනය
 zoom_out_label=කුඩාලනය
@@ -39,6 +40,11 @@ print.title=මුද්‍රණය
 print_label=මුද්‍රණය
 save.title=සුරකින්න
 save_label=සුරකින්න
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=බාගන්න
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=බාගන්න
 bookmark1_label=පවතින පිටුව
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=යෙදුමෙහි අරින්න
@@ -158,9 +164,11 @@ find_reached_bottom=ලේඛනයේ අවසානයට ළඟා විය
 # "{{current}}" and "{{total}}" will be replaced by a number representing the
 # index of the currently active find result, respectively a number representing
 # the total number of matches in the document.
+find_match_count={[ plural(total) ]}
 # LOCALIZATION NOTE (find_match_count_limit): The supported plural forms are
 # [zero|one|two|few|many|other], with [other] as the default value.
 # "{{limit}}" will be replaced by a numerical value.
+find_match_count_limit={[ plural(limit) ]}
 find_match_count_limit[zero]=ගැළපීම් {{limit}} කට වඩා
 find_match_count_limit[two]=ගැළපුම් {{limit}} කට වඩා
 find_match_count_limit[few]=ගැළපුම් {{limit}} කට වඩා
@@ -202,8 +210,13 @@ web_fonts_disabled=වියමන අකුරු අබලයි: පීඩී
 # Editor
 editor_free_text2.title=පෙළ
 editor_free_text2_label=පෙළ
+editor_ink2.title=අඳින්න
+editor_ink2_label=අඳින්න
 
+editor_stamp.title=රූපයක් එක් කරන්න
+editor_stamp_label=රූපයක් එක් කරන්න
 
+free_text2_default_content=ලිවීීම අරඹන්න…
 
 # Editor Parameters
 editor_free_text_color=වර්ණය
diff --git a/l10n/sk/viewer.properties b/l10n/sk/viewer.properties
index 9a17fff79..2d8e3d80e 100644
--- a/l10n/sk/viewer.properties
+++ b/l10n/sk/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Otvoriť súbor
 open_file_label=Otvoriť
 print.title=Tlačiť
 print_label=Tlačiť
-
 save.title=Uložiť
 save_label=Uložiť
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Stiahnuť
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Stiahnuť
 bookmark1.title=Aktuálna stránka (zobraziť adresu URL z aktuálnej stránky)
 bookmark1_label=Aktuálna stránka
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Otvoriť v aplikácii
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Otvoriť v aplikácii
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Počas načítavania dokumentu PDF sa vyskytla chyba.
 invalid_file_error=Neplatný alebo poškodený súbor PDF.
 missing_file_error=Chýbajúci súbor PDF.
 unexpected_response_error=Neočakávaná odpoveď zo servera.
-
 rendering_error=Pri vykresľovaní stránky sa vyskytla chyba.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Text
 editor_ink2.title=Kreslenie
 editor_ink2_label=Kresliť
 
+editor_stamp.title=Pridať obrázok
+editor_stamp_label=Pridať obrázok
+
 free_text2_default_content=Začnite písať…
 
 # Editor Parameters
diff --git a/l10n/skr/viewer.properties b/l10n/skr/viewer.properties
index c771e2713..a66a271cd 100644
--- a/l10n/skr/viewer.properties
+++ b/l10n/skr/viewer.properties
@@ -41,10 +41,16 @@ print.title=چھاپو
 print_label=چھاپو 
 save.title=ہتھیکڑا کرو
 save_label=ہتھیکڑا کرو
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=ڈاؤن لوڈ
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=ڈاؤن لوڈ
 bookmark1.title=موجودہ ورقہ (موجودہ ورقے کنوں یوآرایل ݙیکھو)
 bookmark1_label=موجودہ ورقہ
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=ایپ وچ کھولو
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=ایپ وچ کھولو
 
 # Secondary toolbar and context menu
@@ -214,7 +220,6 @@ loading_error=PDF لوڈ کریندے ویلھے نقص آ ڳیا۔
 invalid_file_error=غلط یا خراب شدہ PDF فائل۔
 missing_file_error=PDF فائل غائب ہے۔
 unexpected_response_error=سرور دا غیر متوقع جواب۔
-
 rendering_error=ورقہ رینڈر کریندے ویلھے ہک خرابی پیش آڳئی۔
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -241,6 +246,9 @@ editor_free_text2_label=متن
 editor_ink2.title=چھکو
 editor_ink2_label=چھکو
 
+editor_stamp.title=ہک تصویر شامل کرو
+editor_stamp_label=ہک تصویر شامل کرو
+
 free_text2_default_content=ٹائپنگ شروع کرو …
 
 # Editor Parameters
diff --git a/l10n/sl/viewer.properties b/l10n/sl/viewer.properties
index 082b5fb02..ee3d5891f 100644
--- a/l10n/sl/viewer.properties
+++ b/l10n/sl/viewer.properties
@@ -41,6 +41,11 @@ print.title=Natisni
 print_label=Natisni
 save.title=Shrani
 save_label=Shrani
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Prenesi
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Prenesi
 bookmark1.title=Trenutna stran (prikaži URL, ki vodi do trenutne strani)
 bookmark1_label=Na trenutno stran
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/sv-SE/viewer.properties b/l10n/sv-SE/viewer.properties
index dc1b12420..0190ff2e5 100644
--- a/l10n/sv-SE/viewer.properties
+++ b/l10n/sv-SE/viewer.properties
@@ -41,6 +41,11 @@ print.title=Skriv ut
 print_label=Skriv ut
 save.title=Spara
 save_label=Spara
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Hämta
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Hämta
 bookmark1.title=Aktuell sida (Visa URL från aktuell sida)
 bookmark1_label=Aktuell sida
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/tg/viewer.properties b/l10n/tg/viewer.properties
index e4f75960e..936777e12 100644
--- a/l10n/tg/viewer.properties
+++ b/l10n/tg/viewer.properties
@@ -41,6 +41,11 @@ print.title=Чоп кардан
 print_label=Чоп кардан
 save.title=Нигоҳ доштан
 save_label=Нигоҳ доштан
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Боргирӣ кардан
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Боргирӣ кардан
 bookmark1.title=Саҳифаи ҷорӣ (Дидани нишонии URL аз саҳифаи ҷорӣ)
 bookmark1_label=Саҳифаи ҷорӣ
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/th/viewer.properties b/l10n/th/viewer.properties
index af56a9545..84f74dac6 100644
--- a/l10n/th/viewer.properties
+++ b/l10n/th/viewer.properties
@@ -39,12 +39,15 @@ open_file.title=เปิดไฟล์
 open_file_label=เปิด
 print.title=พิมพ์
 print_label=พิมพ์
-
 save.title=บันทึก
 save_label=บันทึก
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=ดาวน์โหลด
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=ดาวน์โหลด
 bookmark1.title=หน้าปัจจุบัน (ดู URL จากหน้าปัจจุบัน)
 bookmark1_label=หน้าปัจจุบัน
-
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=เปิดในแอป
 # LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
@@ -217,7 +220,6 @@ loading_error=เกิดข้อผิดพลาดขณะโหลด PD
 invalid_file_error=ไฟล์ PDF ไม่ถูกต้องหรือเสียหาย
 missing_file_error=ไฟล์ PDF หายไป
 unexpected_response_error=การตอบสนองของเซิร์ฟเวอร์ที่ไม่คาดคิด
-
 rendering_error=เกิดข้อผิดพลาดขณะเรนเดอร์หน้า
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -244,6 +246,9 @@ editor_free_text2_label=ข้อความ
 editor_ink2.title=รูปวาด
 editor_ink2_label=รูปวาด
 
+editor_stamp.title=เพิ่มรูปภาพ
+editor_stamp_label=เพิ่มรูปภาพ
+
 free_text2_default_content=เริ่มพิมพ์…
 
 # Editor Parameters
diff --git a/l10n/tr/viewer.properties b/l10n/tr/viewer.properties
index 97f6ec544..982d11adb 100644
--- a/l10n/tr/viewer.properties
+++ b/l10n/tr/viewer.properties
@@ -41,6 +41,11 @@ print.title=Yazdır
 print_label=Yazdır
 save.title=Kaydet
 save_label=Kaydet
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=İndir
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=İndir
 bookmark1.title=Geçerli sayfa (geçerli sayfanın adresini görüntüle)
 bookmark1_label=Geçerli sayfa
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/uk/viewer.properties b/l10n/uk/viewer.properties
index 11e82d109..46953f233 100644
--- a/l10n/uk/viewer.properties
+++ b/l10n/uk/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Відкрити файл
 open_file_label=Відкрити
 print.title=Друк
 print_label=Друк
-
 save.title=Зберегти
 save_label=Зберегти
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Завантажити
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Завантажити
 bookmark1.title=Поточна сторінка (перегляд URL-адреси з поточної сторінки)
 bookmark1_label=Поточна сторінка
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Відкрити у програмі
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Відкрити у програмі
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Під час завантаження PDF сталася поми
 invalid_file_error=Недійсний або пошкоджений PDF-файл.
 missing_file_error=Відсутній PDF-файл.
 unexpected_response_error=Неочікувана відповідь сервера.
-
 rendering_error=Під час виведення сторінки сталася помилка.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Текст
 editor_ink2.title=Малювати
 editor_ink2_label=Малювати
 
+editor_stamp.title=Додати зображення
+editor_stamp_label=Додати зображення
+
 free_text2_default_content=Почніть вводити…
 
 # Editor Parameters
diff --git a/l10n/vi/viewer.properties b/l10n/vi/viewer.properties
index 43360a3da..d373610d6 100644
--- a/l10n/vi/viewer.properties
+++ b/l10n/vi/viewer.properties
@@ -39,13 +39,18 @@ open_file.title=Mở tập tin
 open_file_label=Mở tập tin
 print.title=In
 print_label=In
-
 save.title=Lưu
 save_label=Lưu
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Tải xuống
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Tải xuống
 bookmark1.title=Trang hiện tại (xem URL từ trang hiện tại)
 bookmark1_label=Trang hiện tại
-
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
 open_in_app.title=Mở trong ứng dụng
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
 open_in_app_label=Mở trong ứng dụng
 
 # Secondary toolbar and context menu
@@ -215,7 +220,6 @@ loading_error=Lỗi khi tải tài liệu PDF.
 invalid_file_error=Tập tin PDF hỏng hoặc không hợp lệ.
 missing_file_error=Thiếu tập tin PDF.
 unexpected_response_error=Máy chủ có phản hồi lạ.
-
 rendering_error=Lỗi khi hiển thị trang.
 
 # LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
@@ -242,6 +246,9 @@ editor_free_text2_label=Văn bản
 editor_ink2.title=Vẽ
 editor_ink2_label=Vẽ
 
+editor_stamp.title=Thêm một ảnh
+editor_stamp_label=Thêm một ảnh
+
 free_text2_default_content=Bắt đầu nhập…
 
 # Editor Parameters
diff --git a/l10n/zh-CN/viewer.properties b/l10n/zh-CN/viewer.properties
index 8fd022a64..6ab7ed8eb 100644
--- a/l10n/zh-CN/viewer.properties
+++ b/l10n/zh-CN/viewer.properties
@@ -41,6 +41,11 @@ print.title=打印
 print_label=打印
 save.title=保存
 save_label=保存
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=下载
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=下载
 bookmark1.title=当前页面（在当前页面查看 URL）
 bookmark1_label=当前页面
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
diff --git a/l10n/zh-TW/viewer.properties b/l10n/zh-TW/viewer.properties
index bd1984bb9..0df276836 100644
--- a/l10n/zh-TW/viewer.properties
+++ b/l10n/zh-TW/viewer.properties
@@ -41,6 +41,11 @@ print.title=列印
 print_label=列印
 save.title=儲存
 save_label=儲存
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=下載
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=下載
 bookmark1.title=目前頁面（含目前檢視頁面的網址）
 bookmark1_label=目前頁面
 # LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.