diff --git a/src/po/LINGUAS b/src/po/LINGUAS
index a338cf3..49e17ae 100644
--- a/src/po/LINGUAS
+++ b/src/po/LINGUAS
@@ -30,3 +30,4 @@ sk
 ta
 id
 pt
+vi
diff --git a/src/po/vi.po b/src/po/vi.po
new file mode 100644
index 0000000..6c3140f
--- /dev/null
+++ b/src/po/vi.po
@@ -0,0 +1,154 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the nightthemeswitcher@romainvigier.fr package.
+# NightOwlEyes <dohuytruc1922tlh@gmail.com>, 2025.
+msgid ""
+msgstr ""
+"Project-Id-Version: nightthemeswitcher@romainvigier.fr\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2025-08-17 17:43+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: Automatically generated\n"
+"Language-Team: none\n"
+"Language: vi\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: src/data/ui/BackgroundButton.ui:8
+msgid "Change background"
+msgstr ""
+
+#: src/data/ui/BackgroundButton.ui:23
+msgid "Select your background image"
+msgstr ""
+
+#: src/data/ui/BackgroundsPage.ui:9
+msgid "Backgrounds"
+msgstr ""
+
+#: src/data/ui/BackgroundsPage.ui:13
+msgid ""
+"Background switching is handled by the Shell, these settings allow you to "
+"change the images it uses."
+msgstr ""
+
+#: src/data/ui/BackgroundsPage.ui:16
+msgid "Day background"
+msgstr ""
+
+#: src/data/ui/BackgroundsPage.ui:29
+msgid "Night background"
+msgstr ""
+
+#: src/data/ui/CommandsPage.ui:9
+msgid "Commands"
+msgstr ""
+
+#: src/data/ui/CommandsPage.ui:13
+msgid "Run commands"
+msgstr ""
+
+#: src/data/ui/CommandsPage.ui:21 src/data/ui/SchedulePage.ui:21
+msgid "Sunrise"
+msgstr ""
+
+#: src/data/ui/CommandsPage.ui:28 src/data/ui/SchedulePage.ui:34
+msgid "Sunset"
+msgstr ""
+
+#: src/data/ui/ContributePage.ui:9
+msgid "Contribute"
+msgstr ""
+
+#: src/data/ui/ContributePage.ui:42
+msgid "View the code and report issues"
+msgstr ""
+
+#: src/data/ui/ContributePage.ui:55
+msgid "Contribute to the translation"
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:9
+msgid "Schedule"
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:15
+msgid "Manual schedule"
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:16
+msgid "Use a manual schedule instead of the one computed from your location."
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:51
+msgid "Automatic schedule offset"
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:52
+msgid ""
+"A positive value makes the night longer, a negative value makes the day "
+"longer."
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:71
+msgid "hours"
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:84
+msgid "Run the transition when an app is fullscreen"
+msgstr ""
+
+#: src/data/ui/SchedulePage.ui:93
+msgid "Keyboard shortcut"
+msgstr ""
+
+#: src/data/ui/ShortcutButton.ui:15
+msgid "Choose…"
+msgstr ""
+
+#: src/data/ui/ShortcutButton.ui:32
+msgid "Change keyboard shortcut"
+msgstr ""
+
+#: src/data/ui/ShortcutButton.ui:43
+msgid "Clear"
+msgstr ""
+
+#: src/data/ui/ShortcutButton.ui:78
+msgid "Press your keyboard shortcut…"
+msgstr ""
+
+#. Time separator (eg. 08:27)
+#: src/data/ui/TimeChooser.ui:33 src/data/ui/TimeChooser.ui:91
+msgid ":"
+msgstr ""
+
+#: src/data/ui/TimeChooser.ui:52
+msgid "AM"
+msgstr ""
+
+#: src/data/ui/TimeChooser.ui:58
+msgid "PM"
+msgstr ""
+
+#: src/modules/Timer.js:285
+msgid "Unknown Location"
+msgstr ""
+
+#: src/modules/Timer.js:286
+msgid "A manual schedule will be used to switch the dark mode."
+msgstr ""
+
+#: src/modules/Timer.js:290
+msgid "Edit Manual Schedule"
+msgstr ""
+
+#: src/preferences/BackgroundButton.js:97
+msgid "This image format is not supported."
+msgstr ""
+
+#: src/preferences/BackgroundButton.js:109
+msgid "Image files"
+msgstr ""