diff --git a/sddmauthhelper.cpp b/sddmauthhelper.cpp
--- a/sddmauthhelper.cpp
+++ b/sddmauthhelper.cpp
@@ -114,7 +114,7 @@
         copyFile(plasmarcSource.path(), plasmarcDestination.path());
     }
 
-    // write cursor theme and NumLock preference to config file
+    // write cursor theme, scaling DPI, and NumLock preference to config file
     ActionReply reply = ActionReply::HelperErrorReply();
     QSharedPointer<KConfig> sddmConfig = openConfig(args[QStringLiteral("kde_settings.conf")].toString());
     QSharedPointer<KConfig> sddmOldConfig = openConfig(args[QStringLiteral("sddm.conf")].toString());
@@ -156,7 +156,7 @@
     QFile::remove(sddmConfigLocation.path() + QStringLiteral("/kdeglobals"));
     QFile::remove(sddmConfigLocation.path() + QStringLiteral("/plasmarc"));
 
-    // remove cursor theme and NumLock preference from config file
+    // remove cursor theme, scaling DPI, and NumLock preference from config file
     ActionReply reply = ActionReply::HelperErrorReply();
     QSharedPointer<KConfig> sddmConfig = openConfig(args[QStringLiteral("kde_settings.conf")].toString());
     QSharedPointer<KConfig> sddmOldConfig = openConfig(args[QStringLiteral("sddm.conf")].toString());
diff --git a/src/advanceconfig.cpp b/src/advanceconfig.cpp
--- a/src/advanceconfig.cpp
+++ b/src/advanceconfig.cpp
@@ -151,6 +151,10 @@
     KConfigGroup cursorConfigGroup(&cursorConfig, "Mouse");
     QVariant cursorTheme = cursorConfigGroup.readEntry("cursorTheme", QString());
 
+    KConfig dpiConfig(QStringLiteral("kcmfonts"));
+    KConfigGroup dpiConfigGroup(&dpiConfig, "General");
+    QString dpiValue = QStringLiteral("-dpi ") + dpiConfigGroup.readEntry("forceFontDPI");
+
     KConfig numLockConfig(QStringLiteral("kcminputrc"));
     KConfigGroup numLockConfigGroup(&numLockConfig, "Keyboard");
     QString numLock = numLockConfigGroup.readEntry("NumLock");
@@ -174,6 +178,7 @@
     args[QStringLiteral("kde_settings.conf")] = QString {QLatin1String(SDDM_CONFIG_DIR "/") + QStringLiteral("kde_settings.conf")};
     args[QStringLiteral("sddm.conf")] = QLatin1String(SDDM_CONFIG_FILE);
     args[QStringLiteral("kde_settings.conf/Theme/CursorTheme")] = cursorTheme;
+    args[QStringLiteral("kde_settings.conf/X11/ServerArguments")] = dpiValue;
     if (!numLock.isEmpty()) {
         if (numLock == QStringLiteral("0")) {
             args[QStringLiteral("kde_settings.conf/General/Numlock")] = QStringLiteral("on");
@@ -218,6 +223,7 @@
     args[QStringLiteral("sddm.conf")] = QLatin1String(SDDM_CONFIG_FILE);
     args[QStringLiteral("sddmUserConfig")] = sddmUserConfigPath;
     args[QStringLiteral("kde_settings.conf/Theme/CursorTheme")] = QVariant();
+    args[QStringLiteral("kde_settings.conf/X11/ServerArguments")] = QVariant();
     args[QStringLiteral("kde_settings.conf/General/Numlock")] = QVariant();
 
     KAuth::Action resetAction(QStringLiteral("org.kde.kcontrol.kcmsddm.reset"));
diff --git a/src/ui/advanceconfig.ui b/src/ui/advanceconfig.ui
--- a/src/ui/advanceconfig.ui
+++ b/src/ui/advanceconfig.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>547</width>
-    <height>391</height>
+    <height>409</height>
    </rect>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
@@ -232,11 +232,11 @@
        <property name="minimumSize">
         <size>
          <width>320</width>
-         <height>70</height>
+         <height>90</height>
         </size>
        </property>
        <property name="text">
-        <string>Settings synchronization allows you to transfer your theme customization (color scheme, font, font rendering, icon and Plasma theme) to SDDM.</string>
+        <string>Settings synchronization allows you to transfer the following Plasma settings to SDDM: color scheme, cursor theme, font, font rendering, NumLock preference, Plasma theme, and scaling DPI.</string>
        </property>
        <property name="scaledContents">
         <bool>false</bool>