diff --git a/l10n/be/viewer.ftl b/l10n/be/viewer.ftl
index 8610474ca7b7f..c671f3bc0809c 100644
--- a/l10n/be/viewer.ftl
+++ b/l10n/be/viewer.ftl
@@ -305,6 +305,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Дадаць або змяніць выявы
 pdfjs-editor-remove-button =
     .title = Выдаліць
+pdfjs-editor-highlight-button =
+    .title = Вылучэнне
+pdfjs-editor-highlight-button-label = Вылучэнне
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/cs/viewer.ftl b/l10n/cs/viewer.ftl
index 13b8f49bbf06f..583d0a67b1b11 100644
--- a/l10n/cs/viewer.ftl
+++ b/l10n/cs/viewer.ftl
@@ -307,6 +307,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Přidání či úprava obrázků
 pdfjs-editor-remove-button =
     .title = Odebrat
+pdfjs-editor-highlight-button =
+    .title = Zvýraznění
+pdfjs-editor-highlight-button-label = Zvýraznění
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/de/viewer.ftl b/l10n/de/viewer.ftl
index ba4d2fa5b05a4..adfdb0063004a 100644
--- a/l10n/de/viewer.ftl
+++ b/l10n/de/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Grafiken hinzufügen oder bearbeiten
 pdfjs-editor-remove-button =
     .title = Entfernen
+pdfjs-editor-highlight-button =
+    .title = Hervorheben
+pdfjs-editor-highlight-button-label = Hervorheben
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/en-GB/viewer.ftl b/l10n/en-GB/viewer.ftl
index b581d72378adb..4d08a25c04738 100644
--- a/l10n/en-GB/viewer.ftl
+++ b/l10n/en-GB/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Add or edit images
 pdfjs-editor-remove-button =
     .title = Remove
+pdfjs-editor-highlight-button =
+    .title = Highlight
+pdfjs-editor-highlight-button-label = Highlight
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/eo/viewer.ftl b/l10n/eo/viewer.ftl
index 22c473cb2f840..6a81073bb468b 100644
--- a/l10n/eo/viewer.ftl
+++ b/l10n/eo/viewer.ftl
@@ -301,6 +301,25 @@ pdfjs-editor-ink-button-label = Desegni
 pdfjs-editor-stamp-button =
     .title = Aldoni aŭ modifi bildojn
 pdfjs-editor-stamp-button-label = Aldoni aŭ modifi bildojn
+pdfjs-editor-remove-button =
+    .title = Forigi
+pdfjs-editor-highlight-button =
+    .title = Elstarigi
+pdfjs-editor-highlight-button-label = Elstarigi
+
+## Remove button for the various kind of editor.
+
+pdfjs-editor-remove-ink-button =
+    .title = Forigi desegnon
+pdfjs-editor-remove-freetext-button =
+    .title = Forigi tekston
+pdfjs-editor-remove-stamp-button =
+    .title = Forigi bildon
+pdfjs-editor-remove-highlight-button =
+    .title = Forigi elstaraĵon
+
+##
+
 # Editor Parameters
 pdfjs-editor-free-text-color-input = Koloro
 pdfjs-editor-free-text-size-input = Grando
@@ -347,3 +366,22 @@ pdfjs-editor-resizer-label-bottom-right = Malsupra deksta angulo — ŝanĝi gra
 pdfjs-editor-resizer-label-bottom-middle = Malsupra mezo — ŝanĝi grandon
 pdfjs-editor-resizer-label-bottom-left = Malsupra maldekstra angulo — ŝanĝi grandon
 pdfjs-editor-resizer-label-middle-left = Maldekstra mezo — ŝanĝi grandon
+
+## Color picker
+
+# This means "Color used to highlight text"
+pdfjs-editor-highlight-colorpicker-label = Elstarigi koloron
+pdfjs-editor-colorpicker-button =
+    .title = Ŝanĝi koloron
+pdfjs-editor-colorpicker-dropdown =
+    .aria-label = Elekto de koloroj
+pdfjs-editor-colorpicker-yellow =
+    .title = Flava
+pdfjs-editor-colorpicker-green =
+    .title = Verda
+pdfjs-editor-colorpicker-blue =
+    .title = Blua
+pdfjs-editor-colorpicker-pink =
+    .title = Roza
+pdfjs-editor-colorpicker-red =
+    .title = Ruĝa
diff --git a/l10n/es-AR/viewer.ftl b/l10n/es-AR/viewer.ftl
index 4865a53392c93..5d533a5fbfb31 100644
--- a/l10n/es-AR/viewer.ftl
+++ b/l10n/es-AR/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Agregar o editar imágenes
 pdfjs-editor-remove-button =
     .title = Eliminar
+pdfjs-editor-highlight-button =
+    .title = Resaltar
+pdfjs-editor-highlight-button-label = Resaltar
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/fi/viewer.ftl b/l10n/fi/viewer.ftl
index db465a7c3dc3d..39658a9bbbd1b 100644
--- a/l10n/fi/viewer.ftl
+++ b/l10n/fi/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Lisää tai muokkaa kuvia
 pdfjs-editor-remove-button =
     .title = Poista
+pdfjs-editor-highlight-button =
+    .title = Korostus
+pdfjs-editor-highlight-button-label = Korostus
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/he/viewer.ftl b/l10n/he/viewer.ftl
index 16ad86a4a9704..89badc55422fc 100644
--- a/l10n/he/viewer.ftl
+++ b/l10n/he/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = הוספה או עריכת תמונות
 pdfjs-editor-remove-button =
     .title = הסרה
+pdfjs-editor-highlight-button =
+    .title = סימון
+pdfjs-editor-highlight-button-label = סימון
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/hsb/viewer.ftl b/l10n/hsb/viewer.ftl
index 112855888b35a..257948d5b3b9c 100644
--- a/l10n/hsb/viewer.ftl
+++ b/l10n/hsb/viewer.ftl
@@ -307,6 +307,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Wobrazy přidać abo wobdźěłać
 pdfjs-editor-remove-button =
     .title = Wotstronić
+pdfjs-editor-highlight-button =
+    .title = Wuzběhnyć
+pdfjs-editor-highlight-button-label = Wuzběhnyć
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/ia/viewer.ftl b/l10n/ia/viewer.ftl
index 5c5a78bf21b3a..41372def05fd7 100644
--- a/l10n/ia/viewer.ftl
+++ b/l10n/ia/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Adder o rediger imagines
 pdfjs-editor-remove-button =
     .title = Remover
+pdfjs-editor-highlight-button =
+    .title = Evidentia
+pdfjs-editor-highlight-button-label = Evidentia
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/it/viewer.ftl b/l10n/it/viewer.ftl
index 8d582f66affaa..389a2e0ca1cf6 100644
--- a/l10n/it/viewer.ftl
+++ b/l10n/it/viewer.ftl
@@ -389,4 +389,3 @@ pdfjs-editor-colorpicker-pink =
     .title = Rosa
 pdfjs-editor-colorpicker-red =
     .title = Rosso
-
diff --git a/l10n/ka/viewer.ftl b/l10n/ka/viewer.ftl
index f43e5421304a1..f31898fad0587 100644
--- a/l10n/ka/viewer.ftl
+++ b/l10n/ka/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = სურათების დართვა ან ჩასწორება
 pdfjs-editor-remove-button =
     .title = მოცილება
+pdfjs-editor-highlight-button =
+    .title = მონიშვნა
+pdfjs-editor-highlight-button-label = მონიშვნა
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/kk/viewer.ftl b/l10n/kk/viewer.ftl
index cbac1b618e5c5..8b2317db6afd7 100644
--- a/l10n/kk/viewer.ftl
+++ b/l10n/kk/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Суреттерді қосу немесе түзету
 pdfjs-editor-remove-button =
     .title = Өшіру
+pdfjs-editor-highlight-button =
+    .title = Ерекшелеу
+pdfjs-editor-highlight-button-label = Ерекшелеу
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/ko/viewer.ftl b/l10n/ko/viewer.ftl
index 618f2c244fbfa..a9d402e188603 100644
--- a/l10n/ko/viewer.ftl
+++ b/l10n/ko/viewer.ftl
@@ -295,6 +295,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = 이미지 추가 또는 편집
 pdfjs-editor-remove-button =
     .title = 제거
+pdfjs-editor-highlight-button =
+    .title = 강조
+pdfjs-editor-highlight-button-label = 강조
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/pa-IN/viewer.ftl b/l10n/pa-IN/viewer.ftl
index 71539d4ecf2b4..0fc4a49f04a47 100644
--- a/l10n/pa-IN/viewer.ftl
+++ b/l10n/pa-IN/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = ਚਿੱਤਰ ਜੋੜੋ ਜਾਂ ਸੋਧੋ
 pdfjs-editor-remove-button =
     .title = ਹਟਾਓ
+pdfjs-editor-highlight-button =
+    .title = ਹਾਈਲਾਈਟ
+pdfjs-editor-highlight-button-label = ਹਾਈਲਾਈਟ
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/pl/viewer.ftl b/l10n/pl/viewer.ftl
index 500a2a32ce26b..03731a796e582 100644
--- a/l10n/pl/viewer.ftl
+++ b/l10n/pl/viewer.ftl
@@ -305,6 +305,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Dodaj lub edytuj obrazy
 pdfjs-editor-remove-button =
     .title = Usuń
+pdfjs-editor-highlight-button =
+    .title = Wyróżnij
+pdfjs-editor-highlight-button-label = Wyróżnij
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/ru/viewer.ftl b/l10n/ru/viewer.ftl
index a2172138dc3f8..2603d3c0bb80d 100644
--- a/l10n/ru/viewer.ftl
+++ b/l10n/ru/viewer.ftl
@@ -305,6 +305,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Добавить или изменить изображения
 pdfjs-editor-remove-button =
     .title = Удалить
+pdfjs-editor-highlight-button =
+    .title = Выделение
+pdfjs-editor-highlight-button-label = Выделение
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/sk/viewer.ftl b/l10n/sk/viewer.ftl
index 5858ffec030c4..14b459aa7c32a 100644
--- a/l10n/sk/viewer.ftl
+++ b/l10n/sk/viewer.ftl
@@ -307,6 +307,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Pridať alebo upraviť obrázky
 pdfjs-editor-remove-button =
     .title = Odstrániť
+pdfjs-editor-highlight-button =
+    .title = Zvýrazniť
+pdfjs-editor-highlight-button-label = Zvýrazniť
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/sv-SE/viewer.ftl b/l10n/sv-SE/viewer.ftl
index bb840aabbd990..5007bd799551f 100644
--- a/l10n/sv-SE/viewer.ftl
+++ b/l10n/sv-SE/viewer.ftl
@@ -303,6 +303,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Lägg till eller redigera bilder
 pdfjs-editor-remove-button =
     .title = Ta bort
+pdfjs-editor-highlight-button =
+    .title = Markera
+pdfjs-editor-highlight-button-label = Markera
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/th/viewer.ftl b/l10n/th/viewer.ftl
index a6de5277292d8..5dd7bb2b1ca7d 100644
--- a/l10n/th/viewer.ftl
+++ b/l10n/th/viewer.ftl
@@ -304,6 +304,8 @@ pdfjs-editor-remove-freetext-button =
     .title = เอาข้อความออก
 pdfjs-editor-remove-stamp-button =
     .title = เอาภาพออก
+pdfjs-editor-remove-highlight-button =
+    .title = เอาการเน้นสีออก
 
 ##
 
@@ -356,3 +358,19 @@ pdfjs-editor-resizer-label-middle-left = ตรงกลางด้านซ้
 
 ## Color picker
 
+# This means "Color used to highlight text"
+pdfjs-editor-highlight-colorpicker-label = สีเน้น
+pdfjs-editor-colorpicker-button =
+    .title = เปลี่ยนสี
+pdfjs-editor-colorpicker-dropdown =
+    .aria-label = ทางเลือกสี
+pdfjs-editor-colorpicker-yellow =
+    .title = เหลือง
+pdfjs-editor-colorpicker-green =
+    .title = เขียว
+pdfjs-editor-colorpicker-blue =
+    .title = น้ำเงิน
+pdfjs-editor-colorpicker-pink =
+    .title = ชมพู
+pdfjs-editor-colorpicker-red =
+    .title = แดง
diff --git a/l10n/uk/viewer.ftl b/l10n/uk/viewer.ftl
index 7855d427a820c..d869948403ebb 100644
--- a/l10n/uk/viewer.ftl
+++ b/l10n/uk/viewer.ftl
@@ -305,6 +305,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Додати чи редагувати зображення
 pdfjs-editor-remove-button =
     .title = Вилучити
+pdfjs-editor-highlight-button =
+    .title = Підсвітити
+pdfjs-editor-highlight-button-label = Підсвітити
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/vi/viewer.ftl b/l10n/vi/viewer.ftl
index 9f66aad341aab..522ca76556ea5 100644
--- a/l10n/vi/viewer.ftl
+++ b/l10n/vi/viewer.ftl
@@ -295,6 +295,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = Thêm hoặc chỉnh sửa hình ảnh
 pdfjs-editor-remove-button =
     .title = Xóa
+pdfjs-editor-highlight-button =
+    .title = Tô sáng
+pdfjs-editor-highlight-button-label = Tô sáng
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/zh-CN/viewer.ftl b/l10n/zh-CN/viewer.ftl
index b204a83ee69f7..3d0ded62d0a73 100644
--- a/l10n/zh-CN/viewer.ftl
+++ b/l10n/zh-CN/viewer.ftl
@@ -295,6 +295,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = 添加或编辑图像
 pdfjs-editor-remove-button =
     .title = 移除
+pdfjs-editor-highlight-button =
+    .title = 高亮
+pdfjs-editor-highlight-button-label = 高亮
 
 ## Remove button for the various kind of editor.
 
diff --git a/l10n/zh-TW/viewer.ftl b/l10n/zh-TW/viewer.ftl
index 944e0fc7b2d25..4ae216337e245 100644
--- a/l10n/zh-TW/viewer.ftl
+++ b/l10n/zh-TW/viewer.ftl
@@ -295,6 +295,9 @@ pdfjs-editor-stamp-button =
 pdfjs-editor-stamp-button-label = 新增或編輯圖片
 pdfjs-editor-remove-button =
     .title = 移除
+pdfjs-editor-highlight-button =
+    .title = 強調
+pdfjs-editor-highlight-button-label = 強調
 
 ## Remove button for the various kind of editor.