diff --git a/assets/linux/DEBIAN/postinst b/assets/linux/DEBIAN/postinst
index 7d0aff839..e017701ae 100644
--- a/assets/linux/DEBIAN/postinst
+++ b/assets/linux/DEBIAN/postinst
@@ -3,18 +3,18 @@
 ln -sf /opt/PiliPlus/piliplus /usr/bin/piliplus
 chmod +x /usr/bin/piliplus
 
-if [ $1 == "config" ] && [ -x /usr/binupdate-mime-database ]; then
+if [ $1 == "configure" ] && [ -x /usr/bin/update-mime-database ]; then
     echo "updating mime database..."
     update-mime-database  /usr/share/mime || true
 fi
 
-if [ $1 == "config" ] && [ -x /usr/bin/gtk-update-icon-cache ]; then
+if [ $1 == "configure" ] && [ -x /usr/bin/gtk-update-icon-cache ]; then
     echo "updating icon cache..."
     gtk-update-icon-cache -q -f -t /usr/share/icons/hicolor || true
 fi
 
-if [ $1 == "config" ] && [ -x /usr/bin/update-desktop-database ]; then
-    echo "updating desktop database..."
+if [ $1 == "configure" ] && [ -x /usr/bin/update-desktop-database ]; then
+    echo "configure desktop database..."
     update-desktop-database -q /usr/share/applications || true
 fi
 
diff --git a/assets/linux/piliplus.desktop b/assets/linux/piliplus.desktop
index 92fd6c956..3623ad66b 100644
--- a/assets/linux/piliplus.desktop
+++ b/assets/linux/piliplus.desktop
@@ -6,4 +6,5 @@ Comment[zh_CN]=使用 Flutter 开发的 BiliBili 第三方客户端
 Exec=piliplus
 Icon=piliplus
 Terminal=false
+StartupWMClass=com.example.piliplus
 Categories=Video;AudioVideo;Player;
diff --git a/lib/common/widgets/stateful_builder.dart b/lib/common/widgets/stateful_builder.dart
new file mode 100644
index 000000000..9c9d3cfa2
--- /dev/null
+++ b/lib/common/widgets/stateful_builder.dart
@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+class StatefulBuilder extends StatefulWidget {
+  const StatefulBuilder({
+    super.key,
+    this.onInit,
+    this.onDispose,
+    required this.builder,
+  });
+
+  final VoidCallback? onInit;
+
+  final VoidCallback? onDispose;
+
+  final StatefulWidgetBuilder builder;
+
+  @override
+  State<StatefulBuilder> createState() => _StatefulBuilderState();
+}
+
+class _StatefulBuilderState extends State<StatefulBuilder> {
+  @override
+  void initState() {
+    super.initState();
+    widget.onInit?.call();
+  }
+
+  @override
+  void dispose() {
+    widget.onDispose?.call();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) => widget.builder(context, setState);
+}
diff --git a/lib/main.dart b/lib/main.dart
index 6f279c31f..85a0acdc8 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -292,15 +292,43 @@ class MyApp extends StatelessWidget {
       getPages: Routes.getPages,
       defaultTransition: Pref.pageTransition,
       builder: FlutterSmartDialog.init(
-        toastBuilder: (String msg) => CustomToast(msg: msg),
+        toastBuilder: (msg) => CustomToast(msg: msg),
         loadingBuilder: (msg) => LoadingWidget(msg: msg),
         builder: (context, child) {
-          child = MediaQuery(
-            data: MediaQuery.of(context).copyWith(
-              textScaler: TextScaler.linear(Pref.defaultTextScale),
-            ),
-            child: child!,
-          );
+          final uiScale = Pref.uiScale;
+          final mediaQuery = MediaQuery.of(context);
+          final textScaler = TextScaler.linear(Pref.defaultTextScale);
+          if (uiScale != 1.0) {
+            // Apply full UI scaling for desktop
+            final actualSize = mediaQuery.size;
+            final scaledSize = actualSize / uiScale;
+            child = MediaQuery(
+              data: mediaQuery.copyWith(
+                // Tell child the logical size it should layout to
+                size: scaledSize,
+                padding: mediaQuery.padding / uiScale,
+                viewPadding: mediaQuery.viewPadding / uiScale,
+                viewInsets: mediaQuery.viewInsets / uiScale,
+                textScaler: textScaler,
+              ),
+              // Use OverflowBox to let child layout to scaledSize,
+              // then FittedBox scales it to fit actualSize
+              child: FittedBox(
+                fit: BoxFit.fill,
+                alignment: Alignment.topLeft,
+                child: SizedBox(
+                  width: scaledSize.width,
+                  height: scaledSize.height,
+                  child: child,
+                ),
+              ),
+            );
+          } else {
+            child = MediaQuery(
+              data: mediaQuery.copyWith(textScaler: textScaler),
+              child: child!,
+            );
+          }
           if (PlatformUtils.isDesktop) {
             return Focus(
               canRequestFocus: false,
diff --git a/lib/pages/setting/models/model.dart b/lib/pages/setting/models/model.dart
index 06ec1d5f3..fd6e318cd 100644
--- a/lib/pages/setting/models/model.dart
+++ b/lib/pages/setting/models/model.dart
@@ -34,7 +34,7 @@ class NormalModel extends SettingsModel {
   final ValueGetter<String>? getTitle;
   final ValueGetter<String>? getSubtitle;
   final Widget Function()? getTrailing;
-  final void Function(BuildContext context, void Function() setState)? onTap;
+  final void Function(BuildContext context, VoidCallback setState)? onTap;
 
   const NormalModel({
     super.subtitle,
diff --git a/lib/pages/setting/models/style_settings.dart b/lib/pages/setting/models/style_settings.dart
index 0668ecd0d..1c4b27e7b 100644
--- a/lib/pages/setting/models/style_settings.dart
+++ b/lib/pages/setting/models/style_settings.dart
@@ -5,6 +5,7 @@ import 'package:PiliPlus/common/widgets/color_palette.dart';
 import 'package:PiliPlus/common/widgets/custom_toast.dart';
 import 'package:PiliPlus/common/widgets/dialog/dialog.dart';
 import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
+import 'package:PiliPlus/common/widgets/stateful_builder.dart';
 import 'package:PiliPlus/main.dart';
 import 'package:PiliPlus/models/common/dynamic/dynamic_badge_mode.dart';
 import 'package:PiliPlus/models/common/dynamic/up_panel_position.dart';
@@ -33,7 +34,7 @@ import 'package:PiliPlus/utils/storage_key.dart';
 import 'package:PiliPlus/utils/storage_pref.dart';
 import 'package:auto_orientation/auto_orientation.dart';
 import 'package:flex_seed_scheme/flex_seed_scheme.dart';
-import 'package:flutter/material.dart';
+import 'package:flutter/material.dart' hide StatefulBuilder;
 import 'package:flutter/services.dart';
 import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:get/get.dart';
@@ -56,6 +57,12 @@ List<SettingsModel> get styleSettings => [
       needReboot: true,
     ),
   ],
+  NormalModel(
+    title: '界面缩放',
+    getSubtitle: () => '当前缩放比例：${Pref.uiScale.toStringAsFixed(2)}',
+    leading: const Icon(Icons.zoom_in_outlined),
+    onTap: _showUiScaleDialog,
+  ),
   SwitchModel(
     title: '横屏适配',
     subtitle: '启用横屏布局与逻辑，平板、折叠屏等可开启；建议全屏方向设为【不改变当前方向】',
@@ -774,3 +781,107 @@ void _showQualityDialog({
     }
   });
 }
+
+const _minUiScale = 0.5;
+const _maxUiScale = 2.0;
+
+void _showUiScaleDialog(
+  BuildContext context,
+  VoidCallback setState,
+) {
+  double uiScale = Pref.uiScale;
+  final textController = TextEditingController(
+    text: uiScale.toStringAsFixed(2),
+  );
+
+  showDialog(
+    context: context,
+    builder: (context) {
+      return AlertDialog(
+        title: const Text('界面缩放'),
+        contentPadding: const EdgeInsets.fromLTRB(24, 20, 24, 12),
+        content: StatefulBuilder(
+          onDispose: textController.dispose,
+          builder: (context, setDialogState) {
+            return Column(
+              spacing: 20,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Slider(
+                  padding: .zero,
+                  value: uiScale,
+                  min: _minUiScale,
+                  max: _maxUiScale,
+                  divisions: ((_maxUiScale - _minUiScale) * 20).toInt(),
+                  label: textController.text,
+                  onChanged: (value) => setDialogState(() {
+                    uiScale = value.toPrecision(2);
+                    textController.text = uiScale.toStringAsFixed(2);
+                  }),
+                ),
+                TextFormField(
+                  controller: textController,
+                  keyboardType: const TextInputType.numberWithOptions(
+                    decimal: true,
+                  ),
+                  inputFormatters: [
+                    LengthLimitingTextInputFormatter(4),
+                    FilteringTextInputFormatter.allow(RegExp(r'[\d.]+')),
+                  ],
+                  decoration: const InputDecoration(
+                    labelText: '缩放比例',
+                    hintText: '0.50 - 2.00',
+                    border: OutlineInputBorder(),
+                  ),
+                  onChanged: (value) {
+                    final parsed = double.tryParse(value);
+                    if (parsed != null &&
+                        parsed >= _minUiScale &&
+                        parsed <= _maxUiScale) {
+                      setDialogState(() {
+                        uiScale = parsed;
+                      });
+                    }
+                  },
+                ),
+              ],
+            );
+          },
+        ),
+        actions: [
+          TextButton(
+            onPressed: () {
+              Navigator.pop(context);
+              GStorage.setting.delete(SettingBoxKey.uiScale).whenComplete(() {
+                setState();
+                Get.appUpdate();
+              });
+            },
+            child: const Text('重置'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: Text(
+              '取消',
+              style: TextStyle(
+                color: Theme.of(context).colorScheme.outline,
+              ),
+            ),
+          ),
+          TextButton(
+            onPressed: () {
+              Navigator.pop(context);
+              GStorage.setting.put(SettingBoxKey.uiScale, uiScale).whenComplete(
+                () {
+                  setState();
+                  Get.appUpdate();
+                },
+              );
+            },
+            child: const Text('确定'),
+          ),
+        ],
+      );
+    },
+  );
+}
diff --git a/lib/pages/setting/widgets/normal_item.dart b/lib/pages/setting/widgets/normal_item.dart
index 0076b465e..c0e8c0f4d 100644
--- a/lib/pages/setting/widgets/normal_item.dart
+++ b/lib/pages/setting/widgets/normal_item.dart
@@ -8,7 +8,7 @@ class NormalItem extends StatefulWidget {
   final ValueGetter<String>? getSubtitle;
   final Widget? leading;
   final ValueGetter<Widget?>? getTrailing;
-  final void Function(BuildContext context, void Function() setState)? onTap;
+  final void Function(BuildContext context, VoidCallback setState)? onTap;
   final EdgeInsetsGeometry? contentPadding;
   final TextStyle? titleStyle;
 
diff --git a/lib/utils/storage_key.dart b/lib/utils/storage_key.dart
index 9568301c1..07580d003 100644
--- a/lib/utils/storage_key.dart
+++ b/lib/utils/storage_key.dart
@@ -152,7 +152,8 @@ abstract final class SettingBoxKey {
       isWindowMaximized = 'isWindowMaximized',
       showWindowTitleBar = 'showWindowTitleBar',
       desktopVolume = 'desktopVolume',
-      showTrayIcon = 'showTrayIcon';
+      showTrayIcon = 'showTrayIcon',
+      uiScale = 'uiScale';
 
   static const String subtitlePreferenceV2 = 'subtitlePreferenceV2',
       enableDragSubtitle = 'enableDragSubtitle',
diff --git a/lib/utils/storage_pref.dart b/lib/utils/storage_pref.dart
index ed83e1c4a..21c0882a1 100644
--- a/lib/utils/storage_pref.dart
+++ b/lib/utils/storage_pref.dart
@@ -628,6 +628,9 @@ abstract final class Pref {
   static double get defaultTextScale =>
       _setting.get(SettingBoxKey.defaultTextScale, defaultValue: 1.0);
 
+  static double get uiScale =>
+      _setting.get(SettingBoxKey.uiScale, defaultValue: 1.0);
+
   static bool get dynamicsWaterfallFlow =>
       _setting.get(SettingBoxKey.dynamicsWaterfallFlow, defaultValue: true);