diff --git a/README.md b/README.md
index 926fe96..a40c794 100644
--- a/README.md
+++ b/README.md
@@ -51,8 +51,11 @@ For self-deployment, download the `NanoKVM-USB-xxx-browser.zip` and serve it. Re
 Download the appropriate package for your operating system and install it.
 
 > For Linux users, a permission error may occur when connecting to the serial port.  
-> To resolve this, run `sudo usermod -a -G dialout $USER`, then log out and log back in or restart your system.
-
+> To resolve this run the commands below matching your system, then log out and log back in or restart your system.
+> #### Debian
+> `sudo usermod -a -G dialout $USER`
+> #### Arch
+> `sudo usermod -a -G uucp $USER`
 ## Where to Buy
 
 * [AliExpress Store]() (To be released)
diff --git a/browser/src/App.tsx b/browser/src/App.tsx
index 2c11e7a..c79e2f9 100644
--- a/browser/src/App.tsx
+++ b/browser/src/App.tsx
@@ -10,7 +10,12 @@ import { Keyboard } from '@/components/keyboard';
 import { Menu } from '@/components/menu';
 import { Mouse } from '@/components/mouse';
 import { VirtualKeyboard } from '@/components/virtual-keyboard';
-import { resolutionAtom, serialStateAtom, videoStateAtom } from '@/jotai/device.ts';
+import {
+  resolutionAtom,
+  serialStateAtom,
+  videoScaleAtom,
+  videoStateAtom
+} from '@/jotai/device.ts';
 import { isKeyboardEnableAtom } from '@/jotai/keyboard.ts';
 import { mouseStyleAtom } from '@/jotai/mouse.ts';
 import { camera } from '@/libs/camera';
@@ -23,6 +28,7 @@ const App = () => {
   const isBigScreen = useMediaQuery({ minWidth: 850 });
 
   const mouseStyle = useAtomValue(mouseStyleAtom);
+  const videoScale = useAtomValue(videoScaleAtom);
   const videoState = useAtomValue(videoStateAtom);
   const serialState = useAtomValue(serialStateAtom);
   const isKeyboardEnable = useAtomValue(isKeyboardEnableAtom);
@@ -107,7 +113,13 @@ const App = () => {
       <video
         id="video"
         className={clsx('block min-h-[480px] min-w-[640px] select-none', mouseStyle)}
-        style={{ maxWidth: '100%', maxHeight: '100%', objectFit: 'scale-down' }}
+        style={{
+          transform: `scale(${videoScale})`,
+          transformOrigin: 'center',
+          maxWidth: '100%',
+          maxHeight: '100%',
+          objectFit: 'scale-down'
+        }}
         autoPlay
         playsInline
       />
diff --git a/browser/src/components/menu/keyboard/index.tsx b/browser/src/components/menu/keyboard/index.tsx
index 68a652b..ff59175 100644
--- a/browser/src/components/menu/keyboard/index.tsx
+++ b/browser/src/components/menu/keyboard/index.tsx
@@ -4,7 +4,7 @@ import { KeyboardIcon } from 'lucide-react';
 
 import { Paste } from './paste.tsx';
 import { VirtualKeyboard } from './virtual-keyboard.tsx';
-import { CtrlAltDel } from './ctrl-alt-del';
+import { KeyboardShortcutsMenu } from './shortcuts-menu.tsx';
 
 export const Keyboard = () => {
   const [isPopoverOpen, setIsPopoverOpen] = useState(false);
@@ -12,8 +12,8 @@ export const Keyboard = () => {
   const content = (
     <>
       <Paste />
-      <CtrlAltDel />
       <VirtualKeyboard />
+      <KeyboardShortcutsMenu />
     </>
   );
 
diff --git a/browser/src/components/menu/keyboard/ctrl-alt-del.tsx b/browser/src/components/menu/keyboard/shortcut.tsx
similarity index 60%
rename from browser/src/components/menu/keyboard/ctrl-alt-del.tsx
rename to browser/src/components/menu/keyboard/shortcut.tsx
index 4f1e12e..95a0f6f 100644
--- a/browser/src/components/menu/keyboard/ctrl-alt-del.tsx
+++ b/browser/src/components/menu/keyboard/shortcut.tsx
@@ -1,24 +1,27 @@
 import { useState } from 'react';
 import { SendHorizonal } from 'lucide-react';
-import { useTranslation } from 'react-i18next';
 
 import { device } from '@/libs/device';
 import { Modifiers } from '@/libs/device/keyboard.ts';
 import { KeyboardCodes } from '@/libs/keyboard';
 
-export const CtrlAltDel = () => {
-  const { t } = useTranslation();
+interface ShortcutProps {
+  label: string;
+  modifiers?: Partial<Modifiers>;
+  keyCode: string;
+}
+
+export const Shortcut = ({ label, modifiers = {}, keyCode }: ShortcutProps) => {
   const [isLoading, setIsLoading] = useState(false);
 
-  async function ctrlAltDel(): Promise<void> {
+  async function handleClick(): Promise<void> {
     if (isLoading) return;
     setIsLoading(true);
 
     try {
-      const modifiers = new Modifiers();
-      modifiers.leftCtrl = true;
-      modifiers.leftAlt = true;
-      await send(modifiers, KeyboardCodes.get('Delete')!);
+      const mods = new Modifiers();
+      Object.assign(mods, modifiers);
+      await send(mods, KeyboardCodes.get(keyCode)!);
     } catch (e) {
       console.log(e);
     } finally {
@@ -26,20 +29,19 @@ export const CtrlAltDel = () => {
     }
   }
 
-  async function send(modifiers: Modifiers, code: number) {
+  async function send(mods: Modifiers, code: number) {
     const keys = [0x00, 0x00, code, 0x00, 0x00, 0x00];
-    await device.sendKeyboardData(modifiers, keys);
-
+    await device.sendKeyboardData(mods, keys);
     await device.sendKeyboardData(new Modifiers(), [0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
   }
 
   return (
     <div
       className="flex h-[30px] cursor-pointer items-center space-x-1 rounded px-3 text-neutral-300 hover:bg-neutral-700/60"
-      onClick={ctrlAltDel}
+      onClick={handleClick}
     >
       <SendHorizonal size={18} />
-      <span>{t('keyboard.ctrlAltDel')}</span>
+      <span>{label}</span>
     </div>
   );
 };
diff --git a/browser/src/components/menu/keyboard/shortcuts-menu.tsx b/browser/src/components/menu/keyboard/shortcuts-menu.tsx
new file mode 100644
index 0000000..6f960cf
--- /dev/null
+++ b/browser/src/components/menu/keyboard/shortcuts-menu.tsx
@@ -0,0 +1,55 @@
+import { useState } from 'react';
+import { SendHorizonal } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+import { Popover } from 'antd';
+
+import { Shortcut } from './shortcut.tsx';
+
+export const KeyboardShortcutsMenu = () => {
+  const { t } = useTranslation();
+  const [open, setOpen] = useState(false);
+
+  return (
+    <Popover
+      content={
+        <div className="flex flex-col gap-1">
+          {[
+            {
+              label: t('keyboard.ctrlAltDel'),
+              modifiers: { leftCtrl: true, leftAlt: true },
+              keyCode: 'Delete',
+            },
+            {
+              label: t('keyboard.ctrlD'),
+              modifiers: { leftCtrl: true },
+              keyCode: 'KeyD',
+            },
+            {
+              label: t('keyboard.winTab'),
+              modifiers: { leftWindows: true },
+              keyCode: 'Tab',
+            },
+          ].map((shortcut) => (
+            <Shortcut
+              key={shortcut.keyCode}
+              label={shortcut.label}
+              modifiers={shortcut.modifiers}
+              keyCode={shortcut.keyCode}
+            />
+          ))}
+        </div>
+      }
+      trigger="click"
+      placement="rightTop"
+      align={{ offset: [14, 0] }}
+      open={open}
+      onOpenChange={setOpen}
+      arrow={false}
+    >
+      <div className="flex h-[30px] cursor-pointer items-center space-x-1 rounded px-3 text-neutral-300 hover:bg-neutral-700/60">
+        <SendHorizonal size={18} />
+        <span>{t('keyboard.shortcuts')}</span>
+      </div>
+    </Popover>
+  );
+};
diff --git a/browser/src/components/menu/mouse/index.tsx b/browser/src/components/menu/mouse/index.tsx
index 4c0bbf4..d5ba87a 100644
--- a/browser/src/components/menu/mouse/index.tsx
+++ b/browser/src/components/menu/mouse/index.tsx
@@ -4,6 +4,7 @@ import { useAtom, useSetAtom } from 'jotai';
 import { MouseIcon } from 'lucide-react';
 
 import {
+  mouseJigglerModeAtom,
   mouseModeAtom,
   mouseStyleAtom,
   scrollDirectionAtom,
@@ -12,6 +13,7 @@ import {
 import * as storage from '@/libs/storage';
 
 import { Direction } from './direction.tsx';
+import { Jiggler } from './jiggler.tsx';
 import { Mode } from './mode.tsx';
 import { Speed } from './speed.tsx';
 import { Style } from './style.tsx';
@@ -21,6 +23,7 @@ export const Mouse = () => {
   const [mouseMode, setMouseMode] = useAtom(mouseModeAtom);
   const setScrollDirection = useSetAtom(scrollDirectionAtom);
   const setScrollInterval = useSetAtom(scrollIntervalAtom);
+  const [mouseJigglerMode, setMouseJigglerMode] = useAtom(mouseJigglerModeAtom);
 
   const [isPopoverOpen, setIsPopoverOpen] = useState(false);
 
@@ -48,6 +51,11 @@ export const Mouse = () => {
     if (interval) {
       setScrollInterval(interval);
     }
+
+    const jiggler = storage.getMouseJigglerMode();
+    if (mouseJigglerMode !== jiggler) {
+      setMouseJigglerMode(jiggler);
+    }
   }
 
   const content = (
@@ -56,6 +64,7 @@ export const Mouse = () => {
       <Mode />
       <Direction />
       <Speed />
+      <Jiggler />
     </>
   );
 
diff --git a/browser/src/components/menu/mouse/jiggler.tsx b/browser/src/components/menu/mouse/jiggler.tsx
new file mode 100644
index 0000000..b3c74f5
--- /dev/null
+++ b/browser/src/components/menu/mouse/jiggler.tsx
@@ -0,0 +1,49 @@
+import { Popover } from 'antd';
+import clsx from 'clsx';
+import { useAtom } from 'jotai';
+import { MousePointerIcon } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+
+import { mouseJigglerModeAtom } from '@/jotai/mouse.ts';
+import * as storage from '@/libs/storage';
+
+export const Jiggler = () => {
+  const { t } = useTranslation();
+  const [mouseJigglerMode, setMouseJigglerMode] = useAtom(mouseJigglerModeAtom);
+  const mouseJigglerModes = [
+    { name: t('mouse.jiggler.enable'), value: 'enable' },
+    { name: t('mouse.jiggler.disable'), value: 'disable' }
+  ];
+
+  function update(mode: string) {
+    setMouseJigglerMode(mode);
+    storage.setMouseJigglerMode(mode);
+  }
+
+  const content = (
+    <>
+      {mouseJigglerModes.map((mode) => (
+        <div
+          key={mode.value}
+          className={clsx(
+            'my-1 flex cursor-pointer items-center space-x-1 rounded py-1 pl-2 pr-5 hover:bg-neutral-700/50',
+            mode.value === mouseJigglerMode ? 'text-blue-500' : 'text-neutral-300'
+          )}
+          onClick={() => update(mode.value)}
+        >
+          {mode.name}
+        </div>
+      ))}
+    </>
+  );
+  return (
+    <Popover content={content} placement="rightTop" arrow={false} align={{ offset: [13, 0] }}>
+      <div className="flex h-[30px] cursor-pointer items-center space-x-1 rounded px-3 text-neutral-300 hover:bg-neutral-700/50">
+        <div className="flex h-[14px] w-[20px] items-end">
+          <MousePointerIcon size={16} />
+        </div>
+        <span>{t('mouse.jiggler.title')}</span>
+      </div>
+    </Popover>
+  );
+};
diff --git a/browser/src/components/menu/video/index.tsx b/browser/src/components/menu/video/index.tsx
index 8b78ed9..dd44766 100644
--- a/browser/src/components/menu/video/index.tsx
+++ b/browser/src/components/menu/video/index.tsx
@@ -3,11 +3,13 @@ import { MonitorIcon } from 'lucide-react';
 
 import { Device } from './device.tsx';
 import { Resolution } from './resolution.tsx';
+import { Scale } from './scale.tsx';
 
 export const Video = () => {
   const content = (
     <div className="flex flex-col space-y-1">
       <Resolution />
+      <Scale />
       <Device />
     </div>
   );
diff --git a/browser/src/components/menu/video/scale.tsx b/browser/src/components/menu/video/scale.tsx
new file mode 100644
index 0000000..d21f5e3
--- /dev/null
+++ b/browser/src/components/menu/video/scale.tsx
@@ -0,0 +1,58 @@
+import { ReactElement, useEffect } from 'react'
+import { Popover, Slider } from 'antd'
+import { useAtom } from 'jotai'
+import { ScalingIcon } from 'lucide-react'
+import { useTranslation } from 'react-i18next'
+
+import { videoScaleAtom } from '@/jotai/device.ts';
+import * as storage from '@/libs/storage';
+
+export const Scale = (): ReactElement => {
+  const { t } = useTranslation()
+
+  const [videoScale, setVideoScale] = useAtom(videoScaleAtom)
+
+  useEffect(() => {
+    const scale = storage.getVideoScale()
+    if (scale) {
+      setVideoScale(scale)
+    }
+  }, [])
+
+  async function updateScale(scale: number): Promise<void> {
+    setVideoScale(scale)
+    storage.setVideoScale(scale)
+  }
+
+  const content = (
+    <div className="h-[150px] w-[60px] py-3">
+      <Slider
+        vertical
+        marks={{
+          0.5: <span>x0.5</span>,
+          1: <span>x1.0</span>,
+          1.5: <span>x1.5</span>,
+          2: <span>x2.0</span>
+        }}
+        range={false}
+        included={false}
+        min={0.5}
+        max={2}
+        step={0.1}
+        defaultValue={videoScale}
+        onChange={updateScale}
+      />
+    </div>
+  )
+
+  return (
+    <Popover content={content} placement="rightTop" arrow={false} align={{ offset: [13, 0] }}>
+      <div className="flex h-[30px] cursor-pointer items-center space-x-1 rounded px-3 text-neutral-300 hover:bg-neutral-700/50">
+        <div className="flex h-[14px] w-[20px] items-end">
+          <ScalingIcon size={16} />
+        </div>
+        <span>{t('video.scale')}</span>
+      </div>
+    </Popover>
+  )
+}
diff --git a/browser/src/components/mouse/absolute.tsx b/browser/src/components/mouse/absolute.tsx
index d5a9bd0..7f4ab4b 100644
--- a/browser/src/components/mouse/absolute.tsx
+++ b/browser/src/components/mouse/absolute.tsx
@@ -1,8 +1,13 @@
 import { useEffect, useRef } from 'react';
-import { useAtomValue } from 'jotai';
+import { useAtomValue, useSetAtom } from 'jotai';
 
 import { resolutionAtom } from '@/jotai/device.ts';
-import { scrollDirectionAtom, scrollIntervalAtom } from '@/jotai/mouse.ts';
+import {
+  mouseJigglerModeAtom,
+  mouseLastMoveTimeAtom,
+  scrollDirectionAtom,
+  scrollIntervalAtom
+} from '@/jotai/mouse.ts';
 import { device } from '@/libs/device';
 import { Key } from '@/libs/device/mouse.ts';
 
@@ -10,6 +15,8 @@ export const Absolute = () => {
   const resolution = useAtomValue(resolutionAtom);
   const scrollDirection = useAtomValue(scrollDirectionAtom);
   const scrollInterval = useAtomValue(scrollIntervalAtom);
+  const mouseJigglerMode = useAtomValue(mouseJigglerModeAtom);
+  const setMouseLastMoveTime = useSetAtom(mouseLastMoveTimeAtom);
 
   const keyRef = useRef<Key>(new Key());
   const lastScrollTimeRef = useRef(0);
@@ -74,6 +81,11 @@ export const Absolute = () => {
     async function handleMouseMove(event: any) {
       disableEvent(event);
       await send(event);
+
+      // mouse jiggler record last move time
+      if (mouseJigglerMode === 'enable') {
+        setMouseLastMoveTime(Date.now());
+      }
     }
 
     // mouse scroll
@@ -109,7 +121,7 @@ export const Absolute = () => {
       canvas.removeEventListener('click', disableEvent);
       canvas.removeEventListener('contextmenu', disableEvent);
     };
-  }, [resolution, scrollDirection, scrollInterval]);
+  }, [resolution, scrollDirection, scrollInterval, mouseJigglerMode, setMouseLastMoveTime]);
 
   // disable default events
   function disableEvent(event: any) {
diff --git a/browser/src/components/mouse/index.tsx b/browser/src/components/mouse/index.tsx
index ddbd4ae..32e558a 100644
--- a/browser/src/components/mouse/index.tsx
+++ b/browser/src/components/mouse/index.tsx
@@ -1,6 +1,15 @@
-import { useAtomValue } from 'jotai';
+import { useEffect, useRef } from 'react';
+import { useAtom, useAtomValue } from 'jotai';
 
-import { mouseModeAtom } from '@/jotai/mouse.ts';
+import {
+  mouseJigglerIntervalAtom,
+  mouseJigglerModeAtom,
+  mouseJigglerTimerAtom,
+  mouseLastMoveTimeAtom,
+  mouseModeAtom
+} from '@/jotai/mouse.ts';
+import { device } from '@/libs/device/index.ts';
+import { Key } from '@/libs/device/mouse.ts';
 
 import { Absolute } from './absolute.tsx';
 import { Relative } from './relative.tsx';
@@ -8,5 +17,48 @@ import { Relative } from './relative.tsx';
 export const Mouse = () => {
   const mouseMode = useAtomValue(mouseModeAtom);
 
+  // mouse jiggler
+  const mouseJigglerMode = useAtomValue(mouseJigglerModeAtom);
+  const [mouseJigglerTimer, setMouseJigglerTimer] = useAtom(mouseJigglerTimerAtom);
+  const mouseJigglerInterval = useAtomValue(mouseJigglerIntervalAtom);
+  const mouseLastMoveTime = useAtomValue(mouseLastMoveTimeAtom);
+  const mouseLastMoveTimeRef = useRef(mouseLastMoveTime);
+  const emptyKeyRef = useRef<Key>(new Key());
+  useEffect(() => {
+    // sync mouseLastMoveTime through ref
+    mouseLastMoveTimeRef.current = mouseLastMoveTime;
+  }, [mouseLastMoveTime]);
+  useEffect(() => {
+    async function jigglerTimerCallback() {
+      if (Date.now() - mouseLastMoveTimeRef.current < mouseJigglerInterval) {
+        return;
+      }
+
+      const rect = document.getElementById('video')!.getBoundingClientRect();
+
+      await device.sendMouseAbsoluteData(
+        emptyKeyRef.current,
+        rect.width,
+        rect.height,
+        rect.width / 2,
+        rect.height / 2,
+        0
+      );
+    }
+
+    // configure interval timer
+    if (mouseJigglerMode === 'enable') {
+      if (mouseJigglerTimer === null) {
+        const timer = setInterval(jigglerTimerCallback, mouseJigglerInterval);
+        setMouseJigglerTimer(timer);
+      }
+    } else {
+      if (mouseJigglerTimer) {
+        clearInterval(mouseJigglerTimer);
+        setMouseJigglerTimer(null);
+      }
+    }
+  }, [mouseJigglerMode]);
+
   return <>{mouseMode === 'relative' ? <Relative /> : <Absolute />}</>;
 };
diff --git a/browser/src/components/mouse/relative.tsx b/browser/src/components/mouse/relative.tsx
index 0caecba..22bf8d6 100644
--- a/browser/src/components/mouse/relative.tsx
+++ b/browser/src/components/mouse/relative.tsx
@@ -1,10 +1,15 @@
 import { useEffect, useRef } from 'react';
 import { message } from 'antd';
-import { useAtomValue } from 'jotai';
+import { useAtomValue, useSetAtom } from 'jotai';
 import { useTranslation } from 'react-i18next';
 
 import { resolutionAtom } from '@/jotai/device.ts';
-import { scrollDirectionAtom, scrollIntervalAtom } from '@/jotai/mouse.ts';
+import {
+  mouseJigglerModeAtom,
+  mouseLastMoveTimeAtom,
+  scrollDirectionAtom,
+  scrollIntervalAtom
+} from '@/jotai/mouse.ts';
 import { device } from '@/libs/device';
 import { Key } from '@/libs/device/mouse.ts';
 
@@ -15,6 +20,8 @@ export const Relative = () => {
   const resolution = useAtomValue(resolutionAtom);
   const scrollDirection = useAtomValue(scrollDirectionAtom);
   const scrollInterval = useAtomValue(scrollIntervalAtom);
+  const mouseJigglerMode = useAtomValue(mouseJigglerModeAtom);
+  const setMouseLastMoveTime = useSetAtom(mouseLastMoveTimeAtom);
 
   const isLockedRef = useRef(false);
   const keyRef = useRef<Key>(new Key());
@@ -110,6 +117,11 @@ export const Relative = () => {
       if (x === 0 && y === 0) return;
 
       await send(Math.abs(x) < 10 ? x * 2 : x, Math.abs(y) < 10 ? y * 2 : y, 0);
+
+      // mouse jiggler record last move time
+      if (mouseJigglerMode === 'enable') {
+        setMouseLastMoveTime(Date.now());
+      }
     }
 
     // mouse scroll
@@ -138,7 +150,7 @@ export const Relative = () => {
       canvas.removeEventListener('wheel', handleWheel);
       canvas.removeEventListener('contextmenu', disableEvent);
     };
-  }, [resolution, scrollDirection, scrollInterval]);
+  }, [resolution, scrollDirection, scrollInterval, mouseJigglerMode, setMouseLastMoveTime]);
 
   async function send(x: number, y: number, scroll: number) {
     await device.sendMouseRelativeData(keyRef.current, x, y, scroll);
diff --git a/browser/src/i18n/languages.ts b/browser/src/i18n/languages.ts
index 65ae314..3ed0bcb 100644
--- a/browser/src/i18n/languages.ts
+++ b/browser/src/i18n/languages.ts
@@ -2,10 +2,12 @@ const languages = [
   { key: 'en', name: 'English' },
   { key: 'ru', name: 'Русский' },
   { key: 'zh', name: '中文' },
+  { key: 'zh-TW', name: '繁體中文' }, // 新增繁體中文
   { key: 'de', name: 'Deutsch' },
   { key: 'nl', name: 'Nederlands' },
   { key: 'be', name: 'België' },
-  { key: 'pt_BR', name: 'Português (Brasil)' },
+  { key: 'ko', name: '한국어' },
+  { key: 'pt_BR', name: 'Português (Brasil)' }
 ];
 
 languages.sort((a, b) => a.name.localeCompare(b.name, 'en', { sensitivity: 'base' }));
diff --git a/browser/src/i18n/locales/be.ts b/browser/src/i18n/locales/be.ts
index 094db16..d08ed39 100644
--- a/browser/src/i18n/locales/be.ts
+++ b/browser/src/i18n/locales/be.ts
@@ -24,6 +24,7 @@ const be = {
       },
       video: {
         resolution: 'Resolutie',
+        scale: 'Schaal',
         customResolution: 'Aangepast',
         device: 'Toestel',
         custom: {
@@ -37,7 +38,10 @@ const be = {
       keyboard: {
         paste: 'Plakken',
         virtualKeyboard: 'Virtueel klavier',
-        ctrlAltDel: 'Ctrl + Alt + Delete'
+        shortcuts: 'Sneltoetsen',
+        ctrlAltDel: 'Ctrl + Alt + Delete',
+        ctrlD: 'Ctrl + D',
+        winTab: 'Win + Tab',
       },
       mouse: {
         cursor: {
@@ -62,5 +66,5 @@ const be = {
       }
     }
   };
-  
-  export default be;
\ No newline at end of file
+
+  export default be;
diff --git a/browser/src/i18n/locales/de.ts b/browser/src/i18n/locales/de.ts
index 79dbb70..9d23237 100644
--- a/browser/src/i18n/locales/de.ts
+++ b/browser/src/i18n/locales/de.ts
@@ -24,6 +24,7 @@ const de = {
       },
       video: {
         resolution: 'Auflösung',
+        scale: 'Skalierung',
         customResolution: 'Benutzerdefiniert',
         device: 'Gerät',
         custom: {
@@ -37,7 +38,10 @@ const de = {
       keyboard: {
         paste: 'Einfügen',
         virtualKeyboard: 'Virtuelle Tastatur',
-        ctrlAltDel: 'Strg + Alt + Entfernen'
+        shortcuts: 'Tastenkürzel',
+        ctrlAltDel: 'Strg + Alt + Entfernen',
+        ctrlD: 'Strg + D',
+        winTab: 'Win + Tab',
       },
       mouse: {
         cursor: {
@@ -53,6 +57,9 @@ const de = {
         direction: 'Scrollrichtung',
         scrollUp: 'Hochscrollen',
         scrollDown: 'Runterscrollen',
+        speed: 'Scrollgeschwindigkeit',
+        fast: 'Schnell',
+        slow: 'Langsam',
         requestPointer: 'Benutze relativen Modus. Bitte auf den Desktop klicken, um den Mauszeiger anzuzeigen.'
       },
       settings: {
@@ -62,5 +69,5 @@ const de = {
       }
     }
   };
-  
-  export default de;
\ No newline at end of file
+
+  export default de;
diff --git a/browser/src/i18n/locales/en.ts b/browser/src/i18n/locales/en.ts
index 59ea63b..daa9767 100644
--- a/browser/src/i18n/locales/en.ts
+++ b/browser/src/i18n/locales/en.ts
@@ -24,6 +24,7 @@ const en = {
     },
     video: {
       resolution: 'Resolution',
+      scale: 'Scale',
       customResolution: 'Custom',
       device: 'Device',
       custom: {
@@ -37,7 +38,10 @@ const en = {
     keyboard: {
       paste: 'Paste',
       virtualKeyboard: 'Keyboard',
-      ctrlAltDel: 'Ctrl + Alt + Delete'
+      shortcuts: 'Shortcuts',
+      ctrlAltDel: 'Ctrl + Alt + Delete',
+      ctrlD: 'Ctrl + D',
+      winTab: 'Win + Tab',
     },
     mouse: {
       cursor: {
@@ -56,7 +60,12 @@ const en = {
       speed: 'Wheel speed',
       fast: 'Fast',
       slow: 'Slow',
-      requestPointer: 'Using relative mode. Please click desktop to get mouse pointer.'
+      requestPointer: 'Using relative mode. Please click desktop to get mouse pointer.',
+      jiggler: {
+        title: 'Mouse Jiggler',
+        enable: 'Enable',
+        disable: 'Disable'
+      }
     },
     settings: {
       language: 'Language',
diff --git a/browser/src/i18n/locales/ko.ts b/browser/src/i18n/locales/ko.ts
new file mode 100644
index 0000000..d1be2ed
--- /dev/null
+++ b/browser/src/i18n/locales/ko.ts
@@ -0,0 +1,70 @@
+const ko = {
+  translation: {
+    serial: {
+      notSupported:
+        '시리얼이 지원되지 않습니다. 마우스와 키보드를 사용하려면 Chrome 브라우저를 사용하세요.',
+      failed: '시리얼 연결에 실패했습니다. 다시 시도해 주세요.'
+    },
+    camera: {
+      tip: '권한을 기다리는 중...',
+      denied: '권한이 거부되었습니다.',
+      authorize:
+        'Target PC 연결에 카메라 권한이 필요합니다. 브라우저 설정에서 카메라 권한을 허용해 주세요.',
+      failed: '카메라 연결에 실패했습니다. 다시 시도해 주세요.'
+    },
+    modal: {
+      title: 'USB 장치 선택',
+      selectVideo: '비디오 입력 장치를 선택해 주세요.',
+      selectSerial: '시리얼 장치를 선택해 주세요.'
+    },
+    menu: {
+      serial: '시리얼',
+      keyboard: '키보드',
+      mouse: '마우스'
+    },
+    video: {
+      resolution: '해상도',
+      scale: '배율',
+      customResolution: '사용자 정의',
+      device: '장치',
+      custom: {
+        title: '사용자 정의 해상도',
+        width: '가로',
+        height: '세로',
+        confirm: '확인',
+        cancel: '취소'
+      }
+    },
+    keyboard: {
+      paste: '붙여넣기',
+      virtualKeyboard: '가상 키보드',
+      ctrlAltDel: 'Ctrl + Alt + Delete'
+    },
+    mouse: {
+      cursor: {
+        title: '커서 모양',
+        pointer: '포인터',
+        grab: '손',
+        cell: '플러스',
+        hide: '숨기기'
+      },
+      mode: '마우스 모드',
+      absolute: '절대 모드',
+      relative: '상대 모드',
+      direction: '휠 방향',
+      scrollUp: '위로 스크롤',
+      scrollDown: '아래로 스크롤',
+      speed: '휠 속도',
+      fast: '빠르게',
+      slow: '느리게',
+      requestPointer: '상대 모드를 사용 중입니다. 마우스 포인터를 가져오려면 스크린을 클릭하세요.'
+    },
+    settings: {
+      language: '언어',
+      document: '문서',
+      download: '다운로드'
+    }
+  }
+};
+
+export default ko;
diff --git a/browser/src/i18n/locales/nl.ts b/browser/src/i18n/locales/nl.ts
index abab0ea..2235d17 100644
--- a/browser/src/i18n/locales/nl.ts
+++ b/browser/src/i18n/locales/nl.ts
@@ -24,6 +24,7 @@ const nl = {
       },
       video: {
         resolution: 'Resolutie',
+        scale: 'Schaal',
         customResolution: 'Aangepast',
         device: 'Apparaat',
         custom: {
@@ -37,7 +38,10 @@ const nl = {
       keyboard: {
         paste: 'Plakken',
         virtualKeyboard: 'Virtueel toetsenbord',
-        ctrlAltDel: 'Ctrl + Alt + Delete'
+        shortcuts: 'Sneltoetsen',
+        ctrlAltDel: 'Ctrl + Alt + Delete',
+        ctrlD: 'Ctrl + D',
+        winTab: 'Win + Tab',
       },
       mouse: {
         cursor: {
@@ -62,5 +66,5 @@ const nl = {
       }
     }
   };
-  
-  export default nl;
\ No newline at end of file
+
+  export default nl;
diff --git a/browser/src/i18n/locales/ru.ts b/browser/src/i18n/locales/ru.ts
index c1ee4c8..0e8a299 100644
--- a/browser/src/i18n/locales/ru.ts
+++ b/browser/src/i18n/locales/ru.ts
@@ -24,6 +24,7 @@ const ru = {
     },
     video: {
       resolution: 'Разрешение',
+      scale: 'Масштаб',
       customResolution: 'Пользовательское',
       device: 'Видеоустройство',
       custom: {
@@ -37,7 +38,10 @@ const ru = {
     keyboard: {
       paste: 'Вставить текст',
       virtualKeyboard: 'Виртуальная клавиатура',
-      ctrlAltDel: 'Ctrl + Alt + Delete'
+      shortcuts: 'Сочетания клавиш',
+      ctrlAltDel: 'Ctrl + Alt + Delete',
+      ctrlD: 'Ctrl + D',
+      winTab: 'Win + Tab',
     },
     mouse: {
       cursor: {
@@ -53,6 +57,9 @@ const ru = {
       direction: 'Направление прокрутки',
       scrollUp: 'Обычное',
       scrollDown: 'Инвертированное',
+      speed: 'Скорость прокрутки',
+      fast: 'Быстро',
+      slow: 'Медленно',
       requestPointer: 'Используется относительное позиционирование мыши. Чтобы захватить курсор, щелкните по видео на экране'
     },
     settings: {
diff --git a/browser/src/i18n/locales/zh-TW.ts b/browser/src/i18n/locales/zh-TW.ts
new file mode 100644
index 0000000..3270f50
--- /dev/null
+++ b/browser/src/i18n/locales/zh-TW.ts
@@ -0,0 +1,67 @@
+const zh-TW = {
+  translation: {
+    serial: {
+      notSupported: '當前瀏覽器不支援序列埠，無法使用鍵鼠。請使用桌面版 Chrome 瀏覽器。',
+      failed: '序列埠連線失敗，請重試。'
+    },
+    camera: {
+      tip: '等待授權中...',
+      denied: '權限不足',
+      authorize: '遠端桌面需要取得攝影機權限，請在瀏覽器設定中允許使用攝影機。',
+      failed: '攝影機連線失敗，請重試。'
+    },
+    modal: {
+      title: '選擇 USB 裝置',
+      selectVideo: '請選擇視訊輸入裝置',
+      selectSerial: '選擇序列埠裝置'
+    },
+    menu: {
+      serial: '序列埠',
+      keyboard: '鍵盤',
+      mouse: '滑鼠'
+    },
+    video: {
+      resolution: '解析度',
+      customResolution: '自訂',
+      device: '裝置',
+      custom: {
+        title: '自訂解析度',
+        width: '寬度',
+        height: '高度',
+        confirm: '確定',
+        cancel: '取消'
+      }
+    },
+    keyboard: {
+      paste: '貼上',
+      virtualKeyboard: '虛擬鍵盤',
+      ctrlAltDel: 'Ctrl + Alt + Delete'
+    },
+    mouse: {
+      cursor: {
+        title: '滑鼠指標',
+        pointer: '箭頭',
+        grab: '抓取',
+        cell: '格線',
+        hide: '隱藏'
+      },
+      mode: '滑鼠模式',
+      absolute: '絕對模式',
+      relative: '相對模式',
+      direction: '滾輪方向',
+      scrollUp: '向上',
+      scrollDown: '向下',
+      speed: '滾輪速度',
+      fast: '快',
+      slow: '慢',
+      requestPointer: '正在使用滑鼠相對模式，請點擊桌面取得滑鼠指標。'
+    },
+    settings: {
+      language: '語言',
+      document: '文件',
+      download: '下載'
+    }
+  }
+};
+
+export default zh-TW;
diff --git a/browser/src/i18n/locales/zh.ts b/browser/src/i18n/locales/zh.ts
index e7f1f85..51a5ce9 100644
--- a/browser/src/i18n/locales/zh.ts
+++ b/browser/src/i18n/locales/zh.ts
@@ -22,6 +22,7 @@ const zh = {
     },
     video: {
       resolution: '分辨率',
+      scale: '缩放',
       customResolution: '自定义',
       device: '设备',
       custom: {
@@ -35,7 +36,10 @@ const zh = {
     keyboard: {
       paste: '粘贴',
       virtualKeyboard: '虚拟键盘',
-      ctrlAltDel: 'Ctrl + Alt + Delete'
+      shortcuts: '快捷键',
+      ctrlAltDel: 'Ctrl + Alt + Delete',
+      ctrlD: 'Ctrl + D',
+      winTab: 'Win + Tab',
     },
     mouse: {
       cursor: {
@@ -54,7 +58,12 @@ const zh = {
       speed: '滚轮速度',
       fast: '快',
       slow: '慢',
-      requestPointer: '正在使用鼠标相对模式，请点击桌面获取鼠标指针。'
+      requestPointer: '正在使用鼠标相对模式，请点击桌面获取鼠标指针。',
+      jiggler: {
+        title: '闲时晃动',
+        enable: '启用',
+        disable: '禁用'
+      }
     },
     settings: {
       language: '语言',
diff --git a/browser/src/jotai/device.ts b/browser/src/jotai/device.ts
index a768ee3..195dc28 100644
--- a/browser/src/jotai/device.ts
+++ b/browser/src/jotai/device.ts
@@ -10,6 +10,8 @@ export const resolutionAtom = atom<Resolution>({
   height: 1080
 });
 
+export const videoScaleAtom = atom<number>(1.0)
+
 export const videoDeviceIdAtom = atom('');
 export const videoStateAtom = atom<VideoState>('disconnected');
 
diff --git a/browser/src/jotai/mouse.ts b/browser/src/jotai/mouse.ts
index 7678c93..162484a 100644
--- a/browser/src/jotai/mouse.ts
+++ b/browser/src/jotai/mouse.ts
@@ -9,6 +9,17 @@ export const mouseModeAtom = atom('absolute');
 // mouse scroll direction: 1 or -1
 export const scrollDirectionAtom = atom(1);
 
-// mouse scroll interval (unit: ms)
 // mouse scroll interval (unit: ms)
 export const scrollIntervalAtom = atom(0);
+
+// mouse jiggler mode: enable or disable
+export const mouseJigglerModeAtom = atom('disable');
+
+// mouse jiggler timer id
+export const mouseJigglerTimerAtom = atom<number | null>(null);
+
+// mouse jiggler interval (unit: ms)
+export const mouseJigglerIntervalAtom = atom(15_000);
+
+// mouse jiggler last move time
+export const mouseLastMoveTimeAtom = atom(0);
diff --git a/browser/src/libs/storage/index.ts b/browser/src/libs/storage/index.ts
index 9397942..01543d7 100644
--- a/browser/src/libs/storage/index.ts
+++ b/browser/src/libs/storage/index.ts
@@ -4,11 +4,13 @@ const LANGUAGE_KEY = 'nanokvm-usb-language';
 const VIDEO_DEVICE_ID_KEY = 'nanokvm-usb-video-device-id';
 const VIDEO_RESOLUTION_KEY = 'nanokvm-usb-video-resolution';
 const CUSTOM_RESOLUTION_KEY = 'nanokvm-usb-custom-resolution';
+const VIDEO_SCALE_KEY = 'nanokvm-usb-video-scale'
 const IS_MENU_OPEN_KEY = 'nanokvm-is-menu-open';
 const MOUSE_STYLE_KEY = 'nanokvm-usb-mouse-style';
 const MOUSE_MODE_KEY = 'nanokvm-usb-mouse-mode';
 const MOUSE_SCROLL_DIRECTION_KEY = 'nanokvm-usb-mouse-scroll-direction';
 const MOUSE_SCROLL_INTERVAL_KEY = 'nanokvm-usb-mouse-scroll-interval';
+const MOUSE_JIGGLER_MODE_KEY = 'nanokvm-usb-mouse-jiggler-mode';
 
 export function getLanguage() {
   return localStorage.getItem(LANGUAGE_KEY);
@@ -56,6 +58,18 @@ export function removeCustomResolutions() {
   localStorage.removeItem(CUSTOM_RESOLUTION_KEY);
 }
 
+export function getVideoScale(): number | null {
+  const scale = localStorage.getItem(VIDEO_SCALE_KEY)
+  if (scale && Number(scale)) {
+    return Number(scale)
+  }
+  return null
+}
+
+export function setVideoScale(scale: number): void {
+  localStorage.setItem(VIDEO_SCALE_KEY, String(scale))
+}
+
 export function getIsMenuOpen(): boolean {
   const state = localStorage.getItem(IS_MENU_OPEN_KEY);
   if (!state) {
@@ -107,3 +121,12 @@ export function getMouseScrollInterval(): number | null {
 export function setMouseScrollInterval(interval: number): void {
   localStorage.setItem(MOUSE_SCROLL_INTERVAL_KEY, String(interval));
 }
+
+export function getMouseJigglerMode(): string {
+  const jiggler = localStorage.getItem(MOUSE_JIGGLER_MODE_KEY);
+  return jiggler && jiggler === 'enable' ? 'enable' : 'disable';
+}
+
+export function setMouseJigglerMode(jiggler: string): void {
+  localStorage.setItem(MOUSE_JIGGLER_MODE_KEY, jiggler);
+}
diff --git a/desktop/src/renderer/src/App.tsx b/desktop/src/renderer/src/App.tsx
index 97f9bb4..7ab90ac 100644
--- a/desktop/src/renderer/src/App.tsx
+++ b/desktop/src/renderer/src/App.tsx
@@ -11,7 +11,12 @@ import { Keyboard } from '@renderer/components/keyboard'
 import { Menu } from '@renderer/components/menu'
 import { Mouse } from '@renderer/components/mouse'
 import { VirtualKeyboard } from '@renderer/components/virtual-keyboard'
-import { resolutionAtom, serialPortStateAtom, videoStateAtom } from '@renderer/jotai/device'
+import {
+  resolutionAtom,
+  serialPortStateAtom,
+  videoScaleAtom,
+  videoStateAtom
+} from '@renderer/jotai/device'
 import { isKeyboardEnableAtom } from '@renderer/jotai/keyboard'
 import { mouseStyleAtom } from '@renderer/jotai/mouse'
 import { camera } from '@renderer/libs/camera'
@@ -24,6 +29,7 @@ const App = (): ReactElement => {
   const { t } = useTranslation()
   const isBigScreen = useMediaQuery({ minWidth: 850 })
 
+  const videoScale = useAtomValue(videoScaleAtom)
   const videoState = useAtomValue(videoStateAtom)
   const serialPortState = useAtomValue(serialPortStateAtom)
   const mouseStyle = useAtomValue(mouseStyleAtom)
@@ -115,7 +121,13 @@ const App = (): ReactElement => {
       <video
         id="video"
         className={clsx('block min-h-[480px] min-w-[640px] select-none', mouseStyle)}
-        style={{ maxWidth: '100%', maxHeight: '100%', objectFit: 'scale-down' }}
+        style={{
+          transform: `scale(${videoScale})`,
+          transformOrigin: 'center',
+          maxWidth: '100%',
+          maxHeight: '100%',
+          objectFit: 'scale-down'
+        }}
         autoPlay
         playsInline
       />
diff --git a/desktop/src/renderer/src/components/menu/mouse/index.tsx b/desktop/src/renderer/src/components/menu/mouse/index.tsx
index 46dc0ce..12e7329 100644
--- a/desktop/src/renderer/src/components/menu/mouse/index.tsx
+++ b/desktop/src/renderer/src/components/menu/mouse/index.tsx
@@ -4,14 +4,17 @@ import { useAtom, useSetAtom } from 'jotai'
 import { MouseIcon } from 'lucide-react'
 
 import {
+  mouseJigglerModeAtom,
   mouseModeAtom,
   mouseStyleAtom,
   scrollDirectionAtom,
   scrollIntervalAtom
 } from '@renderer/jotai/mouse'
+import { mouseJiggler } from '@renderer/libs/mouse-jiggler'
 import * as storage from '@renderer/libs/storage'
 
 import { Direction } from './direction'
+import { Jiggler } from './jiggler'
 import { Mode } from './mode'
 import { Speed } from './speed'
 import { Style } from './style'
@@ -21,6 +24,7 @@ export const Mouse = (): ReactElement => {
   const setMouseMode = useSetAtom(mouseModeAtom)
   const setScrollDirection = useSetAtom(scrollDirectionAtom)
   const setScrollInterval = useSetAtom(scrollIntervalAtom)
+  const setMouseJigglerMode = useSetAtom(mouseJigglerModeAtom)
 
   const [isPopoverOpen, setIsPopoverOpen] = useState(false)
 
@@ -44,6 +48,9 @@ export const Mouse = (): ReactElement => {
     if (interval) {
       setScrollInterval(interval)
     }
+    const jiggler = storage.getMouseJigglerMode()
+    mouseJiggler.setMode(jiggler)
+    setMouseJigglerMode(jiggler)
   }, [])
 
   const content = (
@@ -52,6 +59,7 @@ export const Mouse = (): ReactElement => {
       <Mode />
       <Direction />
       <Speed />
+      <Jiggler />
     </div>
   )
 
diff --git a/desktop/src/renderer/src/components/menu/mouse/jiggler.tsx b/desktop/src/renderer/src/components/menu/mouse/jiggler.tsx
new file mode 100644
index 0000000..5d9bcbf
--- /dev/null
+++ b/desktop/src/renderer/src/components/menu/mouse/jiggler.tsx
@@ -0,0 +1,56 @@
+import { ReactElement, useEffect } from 'react'
+import { Popover } from 'antd'
+import clsx from 'clsx'
+import { useAtom } from 'jotai'
+import { MousePointerIcon } from 'lucide-react'
+import { useTranslation } from 'react-i18next'
+
+import { mouseJigglerModeAtom } from '@renderer/jotai/mouse'
+import { mouseJiggler } from '@renderer/libs/mouse-jiggler'
+import * as storage from '@renderer/libs/storage'
+
+export const Jiggler = (): ReactElement => {
+  const { t } = useTranslation()
+  const [jigglerMode, setJigglerMode] = useAtom(mouseJigglerModeAtom)
+
+  const mouseJigglerModes: { name: string; value: 'enable' | 'disable' }[] = [
+    { name: t('mouse.jiggler.enable'), value: 'enable' },
+    { name: t('mouse.jiggler.disable'), value: 'disable' }
+  ]
+
+  function update(mode: 'enable' | 'disable'): void {
+    storage.setMouseJigglerMode(mode)
+    setJigglerMode(mode)
+  }
+
+  useEffect(() => {
+    mouseJiggler.setMode(jigglerMode)
+  }, [jigglerMode])
+
+  const content = (
+    <>
+      {mouseJigglerModes.map((mode) => (
+        <div
+          key={mode.value}
+          className={clsx(
+            'my-1 flex cursor-pointer items-center space-x-1 rounded py-1 pr-5 pl-2 hover:bg-neutral-700/50',
+            mode.value === jigglerMode ? 'text-blue-500' : 'text-neutral-300'
+          )}
+          onClick={() => update(mode.value)}
+        >
+          {mode.name}
+        </div>
+      ))}
+    </>
+  )
+  return (
+    <Popover content={content} placement="rightTop" arrow={false} align={{ offset: [13, 0] }}>
+      <div className="flex h-[30px] cursor-pointer items-center space-x-1 rounded px-3 text-neutral-300 hover:bg-neutral-700/50">
+        <div className="flex h-[14px] w-[20px] items-end">
+          <MousePointerIcon size={16} />
+        </div>
+        <span>{t('mouse.jiggler.title')}</span>
+      </div>
+    </Popover>
+  )
+}
diff --git a/desktop/src/renderer/src/components/menu/video/index.tsx b/desktop/src/renderer/src/components/menu/video/index.tsx
index 45896b5..8bcf218 100644
--- a/desktop/src/renderer/src/components/menu/video/index.tsx
+++ b/desktop/src/renderer/src/components/menu/video/index.tsx
@@ -4,11 +4,13 @@ import { MonitorIcon } from 'lucide-react'
 
 import { Device } from './device'
 import { Resolution } from './resolution'
+import { Scale } from './scale'
 
 export const Video = (): ReactElement => {
   const content = (
     <div className="flex flex-col space-y-1">
       <Resolution />
+      <Scale />
       <Device />
     </div>
   )
diff --git a/desktop/src/renderer/src/components/menu/video/scale.tsx b/desktop/src/renderer/src/components/menu/video/scale.tsx
new file mode 100644
index 0000000..7c39b15
--- /dev/null
+++ b/desktop/src/renderer/src/components/menu/video/scale.tsx
@@ -0,0 +1,58 @@
+import { ReactElement, useEffect } from 'react'
+import { Popover, Slider } from 'antd'
+import { useAtom } from 'jotai'
+import { ScalingIcon } from 'lucide-react'
+import { useTranslation } from 'react-i18next'
+
+import { videoScaleAtom } from '@renderer/jotai/device'
+import * as storage from '@renderer/libs/storage'
+
+export const Scale = (): ReactElement => {
+  const { t } = useTranslation()
+
+  const [videoScale, setVideoScale] = useAtom(videoScaleAtom)
+
+  useEffect(() => {
+    const scale = storage.getVideoScale()
+    if (scale) {
+      setVideoScale(scale)
+    }
+  }, [setVideoScale])
+
+  async function updateScale(scale: number): Promise<void> {
+    setVideoScale(scale)
+    storage.setVideoScale(scale)
+  }
+
+  const content = (
+    <div className="h-[150px] w-[60px] py-3">
+      <Slider
+        vertical
+        marks={{
+          0.5: <span>x0.5</span>,
+          1: <span>x1.0</span>,
+          1.5: <span>x1.5</span>,
+          2: <span>x2.0</span>
+        }}
+        range={false}
+        included={false}
+        min={0.5}
+        max={2}
+        step={0.1}
+        defaultValue={videoScale}
+        onChange={updateScale}
+      />
+    </div>
+  )
+
+  return (
+    <Popover content={content} placement="rightTop" arrow={false} align={{ offset: [13, 0] }}>
+      <div className="flex h-[30px] cursor-pointer items-center space-x-1 rounded px-3 text-neutral-300 hover:bg-neutral-700/50">
+        <div className="flex h-[14px] w-[20px] items-end">
+          <ScalingIcon size={16} />
+        </div>
+        <span>{t('video.scale')}</span>
+      </div>
+    </Popover>
+  )
+}
diff --git a/desktop/src/renderer/src/components/mouse/absolute.tsx b/desktop/src/renderer/src/components/mouse/absolute.tsx
index 4a2c671..525035d 100644
--- a/desktop/src/renderer/src/components/mouse/absolute.tsx
+++ b/desktop/src/renderer/src/components/mouse/absolute.tsx
@@ -4,6 +4,7 @@ import { useAtomValue } from 'jotai'
 import { IpcEvents } from '@common/ipc-events'
 import { resolutionAtom } from '@renderer/jotai/device'
 import { scrollDirectionAtom, scrollIntervalAtom } from '@renderer/jotai/mouse'
+import { mouseJiggler } from '@renderer/libs/mouse-jiggler'
 import type { Mouse as MouseKey } from '@renderer/types'
 
 export const Absolute = (): ReactElement => {
@@ -77,6 +78,8 @@ export const Absolute = (): ReactElement => {
     async function handleMouseMove(event: MouseEvent): Promise<void> {
       disableEvent(event)
       await send(event)
+
+      mouseJiggler.moveEventCallback()
     }
 
     // mouse scroll
diff --git a/desktop/src/renderer/src/components/mouse/relative.tsx b/desktop/src/renderer/src/components/mouse/relative.tsx
index 5bdd7b1..a270fec 100644
--- a/desktop/src/renderer/src/components/mouse/relative.tsx
+++ b/desktop/src/renderer/src/components/mouse/relative.tsx
@@ -6,6 +6,7 @@ import { useTranslation } from 'react-i18next'
 import { IpcEvents } from '@common/ipc-events'
 import { resolutionAtom } from '@renderer/jotai/device'
 import { scrollDirectionAtom, scrollIntervalAtom } from '@renderer/jotai/mouse'
+import { mouseJiggler } from '@renderer/libs/mouse-jiggler'
 import type { Mouse as MouseKey } from '@renderer/types'
 
 export const Relative = (): ReactElement => {
@@ -110,6 +111,8 @@ export const Relative = (): ReactElement => {
       if (x === 0 && y === 0) return
 
       await send(Math.abs(x) < 10 ? x * 2 : x, Math.abs(y) < 10 ? y * 2 : y, 0)
+
+      mouseJiggler.moveEventCallback()
     }
 
     async function handleWheel(event: WheelEvent): Promise<void> {
diff --git a/desktop/src/renderer/src/i18n/languages.ts b/desktop/src/renderer/src/i18n/languages.ts
index 260de67..b068a57 100644
--- a/desktop/src/renderer/src/i18n/languages.ts
+++ b/desktop/src/renderer/src/i18n/languages.ts
@@ -2,12 +2,14 @@ const languages = [
   { key: 'en', name: 'English' },
   { key: 'ru', name: 'Русский' },
   { key: 'zh', name: '中文' },
+  { key: 'zh-TW', name: '繁體中文' }, // 新增繁體中文
   { key: 'de', name: 'Deutsch' },
   { key: 'nl', name: 'Nederlands' },
   { key: 'be', name: 'België' },
-  { key: 'pt_BR', name: 'Português (Brasil)' },
+  { key: 'ko', name: '한국어' },
+  { key: 'pt_BR', name: 'Português (Brasil)' }
 ]
 
-languages.sort((a, b) => a.name.localeCompare(b.name, 'en', { sensitivity: 'base' }))
+languages.sort((a, b) => a.name.localeCompare(b.name, 'en', { sensitivity: 'base' }));
 
-export default languages
+export default languages;
diff --git a/desktop/src/renderer/src/i18n/locales/be.ts b/desktop/src/renderer/src/i18n/locales/be.ts
index ce82906..5858b17 100644
--- a/desktop/src/renderer/src/i18n/locales/be.ts
+++ b/desktop/src/renderer/src/i18n/locales/be.ts
@@ -19,6 +19,7 @@ const be = {
       },
       video: {
         resolution: 'Resolutie',
+        scale: 'Schaal',
         customResolution: 'Aangepast',
         device: 'Toestel',
         custom: {
@@ -76,5 +77,5 @@ const be = {
       }
     }
   }
-  
-  export default be
\ No newline at end of file
+
+  export default be
diff --git a/desktop/src/renderer/src/i18n/locales/de.ts b/desktop/src/renderer/src/i18n/locales/de.ts
index 8a1ac47..a80f385 100644
--- a/desktop/src/renderer/src/i18n/locales/de.ts
+++ b/desktop/src/renderer/src/i18n/locales/de.ts
@@ -19,6 +19,7 @@ const de = {
       },
       video: {
         resolution: 'Auflösung',
+        scale: 'Skalierung',
         customResolution: 'Benutzerdefiniert',
         device: 'Gerät',
         custom: {
@@ -48,6 +49,9 @@ const de = {
         direction: 'Scrollrichtung',
         scrollUp: 'Hochscrollen',
         scrollDown: 'Runterscrollen',
+        speed: 'Scrollgeschwindigkeit',
+        fast: 'Schnell',
+        slow: 'Langsam',
         requestPointer: 'Benutze relativen Modus. Bitte auf den Desktop klicken, um den Mauszeiger anzuzeigen.'
       },
       settings: {
@@ -76,5 +80,5 @@ const de = {
       }
     }
   }
-  
-  export default de
\ No newline at end of file
+
+  export default de
diff --git a/desktop/src/renderer/src/i18n/locales/en.ts b/desktop/src/renderer/src/i18n/locales/en.ts
index 707c660..033e42d 100644
--- a/desktop/src/renderer/src/i18n/locales/en.ts
+++ b/desktop/src/renderer/src/i18n/locales/en.ts
@@ -19,6 +19,7 @@ const en = {
     },
     video: {
       resolution: 'Resolution',
+      scale: 'Scale',
       customResolution: 'Custom',
       device: 'Device',
       custom: {
@@ -51,7 +52,12 @@ const en = {
       speed: 'Wheel speed',
       fast: 'Fast',
       slow: 'Slow',
-      requestPointer: 'Using relative mode. Please click desktop to get mouse pointer.'
+      requestPointer: 'Using relative mode. Please click desktop to get mouse pointer.',
+      jiggler: {
+        title: 'Mouse Jiggler',
+        enable: 'Enable',
+        disable: 'Disable'
+      }
     },
     settings: {
       title: 'Settings',
diff --git a/desktop/src/renderer/src/i18n/locales/ko.ts b/desktop/src/renderer/src/i18n/locales/ko.ts
new file mode 100644
index 0000000..6b58ec8
--- /dev/null
+++ b/desktop/src/renderer/src/i18n/locales/ko.ts
@@ -0,0 +1,84 @@
+const ko = {
+  translation: {
+    camera: {
+      tip: '권한을 기다리는 중...',
+      denied: '권한이 거부되었습니다.',
+      authorize:
+        'Target PC 연결에 카메라 권한이 필요합니다. 설정에서 카메라 권한을 허용해 주세요.',
+      failed: '카메라 연결에 실패했습니다. 다시 시도해 주세요.'
+    },
+    modal: {
+      title: 'USB 장치 선택',
+      selectVideo: '비디오 입력 장치를 선택해 주세요.',
+      selectSerial: '시리얼 장치를 선택해 주세요.'
+    },
+    menu: {
+      serial: '시리얼',
+      keyboard: '키보드',
+      mouse: '마우스'
+    },
+    video: {
+      resolution: '해상도',
+      scale: '배율',
+      customResolution: '사용자 정의',
+      device: '장치',
+      custom: {
+        title: '사용자 정의 해상도',
+        width: '가로',
+        height: '세로',
+        confirm: '확인',
+        cancel: '취소'
+      }
+    },
+    keyboard: {
+      paste: '붙여넣기',
+      virtualKeyboard: '가상 키보드',
+      ctrlAltDel: 'Ctrl + Alt + Delete'
+    },
+    mouse: {
+      cursor: {
+        title: '커서 모양',
+        pointer: '포인터',
+        grab: '손',
+        cell: '플러스',
+        hide: '숨기기'
+      },
+      mode: '마우스 모드',
+      absolute: '절대 모드',
+      relative: '상대 모드',
+      direction: '휠 방향',
+      scrollUp: '위로 스크롤',
+      scrollDown: '아래로 스크롤',
+      speed: '휠 속도',
+      fast: '빠르게',
+      slow: '느리게',
+      requestPointer: '상대 모드를 사용 중입니다. 마우스 포인터를 가져오려면 스크린을 클릭하세요.'
+    },
+    settings: {
+      title: '설정',
+      appearance: {
+        title: '화면 설정',
+        language: '언어',
+        menu: '메뉴 바',
+        menuTips: '시작 시 메뉴 바 열기'
+      },
+      update: {
+        title: '업데이트 확인',
+        latest: '최신 버전을 사용 중입니다.',
+        outdated: '업데이트가 가능합니다. 지금 업데이트하시겠습니까?',
+        downloading: '다운로드 중...',
+        installing: '설치 중...',
+        failed: '업데이트에 실패했습니다. 다시 시도해 주세요.',
+        confirm: '확인',
+        cancel: '취소'
+      },
+      about: {
+        title: '정보',
+        version: '버전',
+        community: '커뮤니티'
+      }
+    }
+  }
+}
+
+export default ko
diff --git a/desktop/src/renderer/src/i18n/locales/nl.ts b/desktop/src/renderer/src/i18n/locales/nl.ts
index f2dd737..395ff32 100644
--- a/desktop/src/renderer/src/i18n/locales/nl.ts
+++ b/desktop/src/renderer/src/i18n/locales/nl.ts
@@ -19,6 +19,7 @@ const nl = {
       },
       video: {
         resolution: 'Resolutie',
+        scale: 'Schaal',
         customResolution: 'Aangepast',
         device: 'Apparaat',
         custom: {
@@ -76,5 +77,5 @@ const nl = {
       }
     }
   }
-  
-  export default nl
\ No newline at end of file
+
+  export default nl
diff --git a/desktop/src/renderer/src/i18n/locales/ru.ts b/desktop/src/renderer/src/i18n/locales/ru.ts
index 4e50e6d..259ab3c 100644
--- a/desktop/src/renderer/src/i18n/locales/ru.ts
+++ b/desktop/src/renderer/src/i18n/locales/ru.ts
@@ -19,6 +19,7 @@ const ru = {
     },
     video: {
       resolution: 'Разрешение',
+      scale: 'Масштаб',
       customResolution: 'Пользовательское',
       device: 'Видеоустройство',
       custom: {
@@ -31,7 +32,8 @@ const ru = {
     },
     keyboard: {
       paste: 'Вставить текст',
-      virtualKeyboard: 'Виртуальная клавиатура'
+      virtualKeyboard: 'Виртуальная клавиатура',
+      ctrlAltDel: 'Ctrl + Alt + Delete'
     },
     mouse: {
       cursor: {
@@ -47,6 +49,9 @@ const ru = {
       direction: 'Направление прокрутки',
       scrollUp: 'Обычное',
       scrollDown: 'Инвертированное',
+      speed: 'Скорость прокрутки',
+      fast: 'Быстро',
+      slow: 'Медленно',
       requestPointer:
         'Используется относительное позиционирование мыши. Чтобы захватить курсор, щелкните по видео на экране'
     },
diff --git a/desktop/src/renderer/src/i18n/locales/zh-TW.ts b/desktop/src/renderer/src/i18n/locales/zh-TW.ts
new file mode 100644
index 0000000..3270f50
--- /dev/null
+++ b/desktop/src/renderer/src/i18n/locales/zh-TW.ts
@@ -0,0 +1,67 @@
+const zh-TW = {
+  translation: {
+    serial: {
+      notSupported: '當前瀏覽器不支援序列埠，無法使用鍵鼠。請使用桌面版 Chrome 瀏覽器。',
+      failed: '序列埠連線失敗，請重試。'
+    },
+    camera: {
+      tip: '等待授權中...',
+      denied: '權限不足',
+      authorize: '遠端桌面需要取得攝影機權限，請在瀏覽器設定中允許使用攝影機。',
+      failed: '攝影機連線失敗，請重試。'
+    },
+    modal: {
+      title: '選擇 USB 裝置',
+      selectVideo: '請選擇視訊輸入裝置',
+      selectSerial: '選擇序列埠裝置'
+    },
+    menu: {
+      serial: '序列埠',
+      keyboard: '鍵盤',
+      mouse: '滑鼠'
+    },
+    video: {
+      resolution: '解析度',
+      customResolution: '自訂',
+      device: '裝置',
+      custom: {
+        title: '自訂解析度',
+        width: '寬度',
+        height: '高度',
+        confirm: '確定',
+        cancel: '取消'
+      }
+    },
+    keyboard: {
+      paste: '貼上',
+      virtualKeyboard: '虛擬鍵盤',
+      ctrlAltDel: 'Ctrl + Alt + Delete'
+    },
+    mouse: {
+      cursor: {
+        title: '滑鼠指標',
+        pointer: '箭頭',
+        grab: '抓取',
+        cell: '格線',
+        hide: '隱藏'
+      },
+      mode: '滑鼠模式',
+      absolute: '絕對模式',
+      relative: '相對模式',
+      direction: '滾輪方向',
+      scrollUp: '向上',
+      scrollDown: '向下',
+      speed: '滾輪速度',
+      fast: '快',
+      slow: '慢',
+      requestPointer: '正在使用滑鼠相對模式，請點擊桌面取得滑鼠指標。'
+    },
+    settings: {
+      language: '語言',
+      document: '文件',
+      download: '下載'
+    }
+  }
+};
+
+export default zh-TW;
diff --git a/desktop/src/renderer/src/i18n/locales/zh.ts b/desktop/src/renderer/src/i18n/locales/zh.ts
index f6ea3f1..8adde4f 100644
--- a/desktop/src/renderer/src/i18n/locales/zh.ts
+++ b/desktop/src/renderer/src/i18n/locales/zh.ts
@@ -18,6 +18,7 @@ const zh = {
     },
     video: {
       resolution: '分辨率',
+      scale: '缩放',
       customResolution: '自定义',
       device: '设备',
       custom: {
@@ -50,7 +51,12 @@ const zh = {
       speed: '滚轮速度',
       fast: '快',
       slow: '慢',
-      requestPointer: '正在使用鼠标相对模式，请点击桌面获取鼠标指针。'
+      requestPointer: '正在使用鼠标相对模式，请点击桌面获取鼠标指针。',
+      jiggler: {
+        title: '空闲晃动',
+        enable: '启用',
+        disable: '禁用'
+      }
     },
     settings: {
       title: '设置',
diff --git a/desktop/src/renderer/src/jotai/device.ts b/desktop/src/renderer/src/jotai/device.ts
index c42460f..84dbee6 100644
--- a/desktop/src/renderer/src/jotai/device.ts
+++ b/desktop/src/renderer/src/jotai/device.ts
@@ -10,6 +10,8 @@ export const resolutionAtom = atom<Resolution>({
   height: 1080
 })
 
+export const videoScaleAtom = atom<number>(1.0)
+
 export const videoDeviceIdAtom = atom('')
 export const videoStateAtom = atom<VideoState>('disconnected')
 
diff --git a/desktop/src/renderer/src/jotai/mouse.ts b/desktop/src/renderer/src/jotai/mouse.ts
index 4a33252..01f3620 100644
--- a/desktop/src/renderer/src/jotai/mouse.ts
+++ b/desktop/src/renderer/src/jotai/mouse.ts
@@ -10,4 +10,7 @@ export const mouseModeAtom = atom('absolute')
 export const scrollDirectionAtom = atom(1)
 
 // mouse scroll interval (unit: ms)
-export const scrollIntervalAtom = atom(0);
+export const scrollIntervalAtom = atom(0)
+
+// mouse jiggler mode: enable or disable
+export const mouseJigglerModeAtom = atom<'enable' | 'disable'>('disable')
diff --git a/desktop/src/renderer/src/libs/mouse-jiggler/index.ts b/desktop/src/renderer/src/libs/mouse-jiggler/index.ts
new file mode 100644
index 0000000..bfdd4b7
--- /dev/null
+++ b/desktop/src/renderer/src/libs/mouse-jiggler/index.ts
@@ -0,0 +1,50 @@
+import { IpcEvents } from '@common/ipc-events'
+import type { Mouse as MouseKey } from '@renderer/types'
+
+const MOUSE_JIGGLER_INTERVAL = 15_000
+const EMPTY_KEY: MouseKey = { left: false, right: false, mid: false }
+
+class MouseJiggler {
+  private lastMoveTime: number
+  private timer: NodeJS.Timeout | null
+  private mode: 'enable' | 'disable'
+
+  constructor() {
+    this.lastMoveTime = Date.now()
+    this.timer = null
+    this.mode = 'disable'
+  }
+
+  // enable or disable mouse jiggler
+  setMode(mode: 'enable' | 'disable'): void {
+    this.mode = mode
+    if (mode === 'disable' && this.timer !== null) {
+      clearInterval(this.timer)
+      this.timer = null
+    } else if (mode === 'enable' && this.timer === null) {
+      this.timer = setInterval(() => {
+        this.timeoutCallback()
+      }, MOUSE_JIGGLER_INTERVAL / 5)
+    }
+  }
+
+  // addEventListener to canvas on 'mousemove' event
+  moveEventCallback(): void {
+    if (this.mode === 'enable') {
+      this.lastMoveTime = Date.now()
+    }
+  }
+
+  timeoutCallback(): void {
+    if (Date.now() - this.lastMoveTime > MOUSE_JIGGLER_INTERVAL) {
+      this.lastMoveTime = Date.now() - 1_000
+      this.sendJiggle()
+    }
+  }
+
+  async sendJiggle(): Promise<void> {
+    await window.electron.ipcRenderer.invoke(IpcEvents.SEND_MOUSE_RELATIVE, EMPTY_KEY, 10, 10, 0)
+    await window.electron.ipcRenderer.invoke(IpcEvents.SEND_MOUSE_RELATIVE, EMPTY_KEY, -10, -10, 0)
+  }
+}
+export const mouseJiggler = new MouseJiggler()
diff --git a/desktop/src/renderer/src/libs/storage/index.ts b/desktop/src/renderer/src/libs/storage/index.ts
index 0024a9d..98c0961 100644
--- a/desktop/src/renderer/src/libs/storage/index.ts
+++ b/desktop/src/renderer/src/libs/storage/index.ts
@@ -5,6 +5,7 @@ import { getWithExpiry, setWithExpiry } from './expiry'
 const LANGUAGE_KEY = 'nanokvm-usb-language'
 const VIDEO_DEVICE_ID_KEY = 'nanokvm-usb-video-device-id'
 const VIDEO_RESOLUTION_KEY = 'nanokvm-usb-video-resolution'
+const VIDEO_SCALE_KEY = 'nanokvm-usb-video-scale'
 const CUSTOM_RESOLUTION_KEY = 'nanokvm-usb-custom-resolution'
 const SERIAL_PORT_KEY = 'nanokvm-serial-port'
 const IS_MENU_OPEN_KEY = 'nanokvm-is-menu-open'
@@ -13,6 +14,7 @@ const MOUSE_MODE_KEY = 'nanokvm-usb-mouse-mode'
 const MOUSE_SCROLL_DIRECTION_KEY = 'nanokvm-usb-mouse-scroll-direction'
 const SKIP_UPDATE_KEY = 'nano-kvm-check-update'
 const MOUSE_SCROLL_INTERVAL_KEY = 'nanokvm-usb-mouse-scroll-interval'
+const MOUSE_JIGGLER_MODE_KEY = 'nanokvm-usb-mouse-jiggler-mode'
 
 export function getLanguage(): string | null {
   return localStorage.getItem(LANGUAGE_KEY)
@@ -63,6 +65,18 @@ export function removeCustomResolutions(): void {
   localStorage.removeItem(CUSTOM_RESOLUTION_KEY)
 }
 
+export function getVideoScale(): number | null {
+  const scale = localStorage.getItem(VIDEO_SCALE_KEY)
+  if (scale && Number(scale)) {
+    return Number(scale)
+  }
+  return null
+}
+
+export function setVideoScale(scale: number): void {
+  localStorage.setItem(VIDEO_SCALE_KEY, String(scale))
+}
+
 export function getSerialPort(): string | null {
   return localStorage.getItem(SERIAL_PORT_KEY)
 }
@@ -132,3 +146,12 @@ export function setSkipUpdate(skip: boolean): void {
   const expiry = 3 * 24 * 60 * 60 * 1000
   setWithExpiry(SKIP_UPDATE_KEY, String(skip), expiry)
 }
+
+export function getMouseJigglerMode(): 'enable' | 'disable' {
+  const jiggler = localStorage.getItem(MOUSE_JIGGLER_MODE_KEY)
+  return jiggler && jiggler === 'enable' ? 'enable' : 'disable'
+}
+
+export function setMouseJigglerMode(jiggler: 'enable' | 'disable'): void {
+  localStorage.setItem(MOUSE_JIGGLER_MODE_KEY, jiggler)
+}