diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/LauncherSettings.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/LauncherSettings.java
index a92fdf5fce5..eaf94c434bd 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/LauncherSettings.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/LauncherSettings.java
@@ -476,6 +476,15 @@ public StringProperty launcherFontFamilyProperty() {
         return launcherFontFamily;
     }
 
+    /// The launcher chrome font size.
+    @SerializedName("launcherFontSize")
+    private final DoubleProperty launcherFontSize = new SimpleDoubleProperty(FontManager.DEFAULT_FONT_SIZE);
+
+    /// Returns the launcher chrome font size property.
+    public DoubleProperty launcherFontSizeProperty() {
+        return launcherFontSize;
+    }
+
     // General UI
 
     /// Whether UI animations are disabled.
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/StyleSheets.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/StyleSheets.java
index 9c9175329a2..3c754375426 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/StyleSheets.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/StyleSheets.java
@@ -39,6 +39,7 @@
 import java.util.Base64;
 import java.util.Locale;
 
+import static org.jackhuang.hmcl.setting.SettingsManager.settings;
 import static org.jackhuang.hmcl.util.logging.Logger.LOG;
 
 /**
@@ -61,6 +62,7 @@ public final class StyleSheets {
         stylesheets = FXCollections.observableList(Arrays.asList(array));
 
         FontManager.fontProperty().addListener(o -> stylesheets.set(FONT_STYLE_SHEET_INDEX, getFontStyleSheet()));
+        settings().launcherFontSizeProperty().addListener(o -> stylesheets.set(FONT_STYLE_SHEET_INDEX, getFontStyleSheet()));
         Themes.colorSchemeProperty().addListener(o -> {
             stylesheets.set(THEME_STYLE_SHEET_INDEX, getThemeStyleSheet());
             stylesheets.set(BRIGHTNESS_SHEET_INDEX, getBrightnessStyleSheet());
@@ -90,48 +92,65 @@ private static String getFontStyleSheet() {
         final String defaultCss = "/assets/css/font.css";
         final FontManager.FontReference font = FontManager.getFont();
 
-        if (font == null || "System".equals(font.family()))
-            return defaultCss;
+        final boolean hasCustomFont = font != null && !"System".equals(font.family());
+        final double fontSize = settings().launcherFontSizeProperty().get();
 
-        String fontFamily = font.family();
-        String style = font.style();
-        String weight = null;
-        String posture = null;
-
-        if (style != null) {
-            style = style.toLowerCase(Locale.ROOT);
-
-            if (style.contains("thin"))
-                weight = "100";
-            else if (style.contains("extralight") || style.contains("extra light") || style.contains("ultralight") | style.contains("ultra light"))
-                weight = "200";
-            else if (style.contains("medium"))
-                weight = "500";
-            else if (style.contains("semibold") || style.contains("semi bold") || style.contains("demibold") || style.contains("demi bold"))
-                weight = "600";
-            else if (style.contains("extrabold") || style.contains("extra bold") || style.contains("ultrabold") || style.contains("ultra bold"))
-                weight = "800";
-            else if (style.contains("black") || style.contains("heavy"))
-                weight = "900";
-            else if (style.contains("light"))
-                weight = "lighter";
-            else if (style.contains("bold"))
-                weight = "bold";
-
-            posture = style.contains("italic") || style.contains("oblique") ? "italic" : null;
-        }
+        if (!hasCustomFont && fontSize == FontManager.DEFAULT_FONT_SIZE)
+            return defaultCss;
 
         StringBuilder builder = new StringBuilder();
         builder.append(".root {");
-        builder.append("-fx-font-family:\"").append(fontFamily).append("\";");
 
-        if (weight != null)
-            builder.append("-fx-font-weight:").append(weight).append(";");
+        if (hasCustomFont) {
+            String fontFamily = font.family();
+            String style = font.style();
+            String weight = null;
+            String posture = null;
+
+            if (style != null) {
+                style = style.toLowerCase(Locale.ROOT);
+
+                if (style.contains("thin"))
+                    weight = "100";
+                else if (style.contains("extralight") || style.contains("extra light") || style.contains("ultralight") | style.contains("ultra light"))
+                    weight = "200";
+                else if (style.contains("medium"))
+                    weight = "500";
+                else if (style.contains("semibold") || style.contains("semi bold") || style.contains("demibold") || style.contains("demi bold"))
+                    weight = "600";
+                else if (style.contains("extrabold") || style.contains("extra bold") || style.contains("ultrabold") || style.contains("ultra bold"))
+                    weight = "800";
+                else if (style.contains("black") || style.contains("heavy"))
+                    weight = "900";
+                else if (style.contains("light"))
+                    weight = "lighter";
+                else if (style.contains("bold"))
+                    weight = "bold";
+
+                posture = style.contains("italic") || style.contains("oblique") ? "italic" : null;
+            }
+
+            builder.append("-fx-font-family:\"").append(fontFamily).append("\";");
+
+            if (weight != null)
+                builder.append("-fx-font-weight:").append(weight).append(";");
 
-        if (posture != null)
-            builder.append("-fx-font-style:").append(posture).append(";");
+            if (posture != null)
+                builder.append("-fx-font-style:").append(posture).append(";");
+        }
 
-        builder.append('}');
+        if (fontSize != FontManager.DEFAULT_FONT_SIZE) {
+            builder.append("-fx-font-size:").append(fontSize).append("px;");
+            builder.append('}');
+            // Override Modena UA which sets explicit font-size on common controls,
+            // blocking inheritance from .root. The ".root " prefix gives higher
+            // specificity than Modena's plain ".label" etc., and author sheets
+            // have higher priority than user-agent sheets.
+            builder.append(".root .label,.root .button,.root .check-box,.root .radio-button,.root .hyperlink{")
+                    .append("-fx-font-size:").append(fontSize).append("px;}");
+        } else {
+            builder.append('}');
+        }
 
         return toStyleSheetUri(builder.toString(), defaultCss);
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/PersonalizationPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/PersonalizationPage.java
index 7be7564d975..dc846968aeb 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/PersonalizationPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/PersonalizationPage.java
@@ -1197,24 +1197,39 @@ protected Node createRightNode() {
 
                     {
                         HBox hBox = new HBox();
-                        hBox.setSpacing(8);
+                        hBox.setSpacing(3);
 
                         FontComboBox cboFont = new FontComboBox();
                         cboFont.setValue(settings().launcherFontFamilyProperty().get());
                         FXUtils.onChange(cboFont.valueProperty(), FontManager::setFontFamily);
 
+                        JFXTextField txtFontSize = new JFXTextField();
+                        FXUtils.setLimitWidth(txtFontSize, 50);
+                        FXUtils.bind(txtFontSize, settings().launcherFontSizeProperty(), SafeStringConverter.fromFiniteDouble()
+                                .restrict(it -> it > 0)
+                                .fallbackTo(FontManager.DEFAULT_FONT_SIZE)
+                                .asPredicate(Validator.addTo(txtFontSize)));
+
                         JFXButton clearButton = FXUtils.newToggleButton4(SVG.RESTORE);
                         clearButton.setOnAction(e -> cboFont.setValue(null));
 
                         FXUtils.installFastTooltip(clearButton, i18n("button.reset"));
 
-                        hBox.getChildren().setAll(cboFont, clearButton);
+                        hBox.getChildren().setAll(cboFont, txtFontSize, clearButton);
 
                         borderPane.setRight(hBox);
                     }
                 }
 
-                vbox.getChildren().add(new Label("Hello Minecraft! Launcher"));
+                Label lblFontDisplay = new Label("Hello Minecraft! Launcher");
+                lblFontDisplay.fontProperty().bind(Bindings.createObjectBinding(
+                        () -> Font.font(
+                                Lang.requireNonNullElse(settings().launcherFontFamilyProperty().get(),
+                                        Font.getDefault().getFamily()),
+                                settings().launcherFontSizeProperty().get()),
+                        settings().launcherFontFamilyProperty(), settings().launcherFontSizeProperty()));
+
+                vbox.getChildren().add(lblFontDisplay);
 
                 fontPane.getContent().add(vbox);
             }
diff --git a/docs/schemas/launcher-settings/1.0.0.json b/docs/schemas/launcher-settings/1.0.0.json
index bd8b769826b..45d4e78d957 100644
--- a/docs/schemas/launcher-settings/1.0.0.json
+++ b/docs/schemas/launcher-settings/1.0.0.json
@@ -138,6 +138,9 @@
     "launcherFontFamily": {
       "type": "string"
     },
+    "launcherFontSize": {
+      "type": "number"
+    },
     "windowTransparent": {
       "type": "boolean"
     },