diff --git a/apps/readest-app/src/app/library/page.tsx b/apps/readest-app/src/app/library/page.tsx
index 9623290d..b8d59f3b 100644
--- a/apps/readest-app/src/app/library/page.tsx
+++ b/apps/readest-app/src/app/library/page.tsx
@@ -8,6 +8,7 @@ import { Book } from '@/types/book';
 import { AppService } from '@/types/system';
 import { navigateToReader } from '@/utils/nav';
 import { getBaseFilename, listFormater } from '@/utils/book';
+import { eventDispatcher } from '@/utils/event';
 import { parseOpenWithFiles } from '@/helpers/cli';
 import { isTauriAppPlatform, hasUpdater } from '@/services/environment';
 import { checkForAppUpdates } from '@/helpers/updater';
@@ -21,11 +22,11 @@ import { useLibraryStore } from '@/store/libraryStore';
 import { useSettingsStore } from '@/store/settingsStore';
 import { useDemoBooks } from './hooks/useDemoBooks';
 
+import { AboutWindow } from '@/components/AboutWindow';
+import { Toast } from '@/components/Toast';
 import Spinner from '@/components/Spinner';
 import LibraryHeader from './components/LibraryHeader';
 import Bookshelf from './components/Bookshelf';
-import { AboutWindow } from '@/components/AboutWindow';
-import Toast from '@/components/Toast';
 
 const LibraryPage = () => {
   const router = useRouter();
@@ -46,16 +47,6 @@ const LibraryPage = () => {
   const [isSelectMode, setIsSelectMode] = useState(false);
   const demoBooks = useDemoBooks();
 
-  const [toastMessage, setToastMessage] = useState('');
-  const toastDismissTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
-  useEffect(() => {
-    if (toastDismissTimeout.current) clearTimeout(toastDismissTimeout.current);
-    toastDismissTimeout.current = setTimeout(() => setToastMessage(''), 5000);
-    return () => {
-      if (toastDismissTimeout.current) clearTimeout(toastDismissTimeout.current);
-    };
-  }, [toastMessage]);
-
   useEffect(() => {
     const doAppUpdates = async () => {
       if (hasUpdater()) {
@@ -175,11 +166,12 @@ const LibraryPage = () => {
         const filename = typeof file === 'string' ? file : file.name;
         const baseFilename = getBaseFilename(filename);
         failedFiles.push(baseFilename);
-        setToastMessage(
-          _('Failed to import book(s): {{filenames}}', {
+        eventDispatcher.dispatch('toast', {
+          message: _('Failed to import book(s): {{filenames}}', {
             filenames: listFormater(false).format(failedFiles),
           }),
-        );
+          type: 'error',
+        });
         console.error('Failed to import book:', filename, error);
       }
     }
@@ -283,13 +275,7 @@ const LibraryPage = () => {
           </div>
         ))}
       <AboutWindow />
-      {toastMessage && (
-        <Toast
-          message={toastMessage}
-          toastClass='toast-top toast-end pt-11'
-          alertClass='alert-error max-w-80'
-        />
-      )}
+      <Toast />
     </div>
   );
 };
diff --git a/apps/readest-app/src/app/reader/components/FoliateViewer.tsx b/apps/readest-app/src/app/reader/components/FoliateViewer.tsx
index 6d5b54f6..ce1688c8 100644
--- a/apps/readest-app/src/app/reader/components/FoliateViewer.tsx
+++ b/apps/readest-app/src/app/reader/components/FoliateViewer.tsx
@@ -18,7 +18,6 @@ import {
   handleClick,
   handleWheel,
 } from '../utils/iframeEventHandlers';
-import Toast from '@/components/Toast';
 
 const FoliateViewer: React.FC<{
   bookKey: string;
@@ -39,7 +38,7 @@ const FoliateViewer: React.FC<{
     return () => clearTimeout(timer);
   }, [toastMessage]);
 
-  useProgressSync(bookKey, setToastMessage);
+  useProgressSync(bookKey);
 
   const progressRelocateHandler = (event: Event) => {
     const detail = (event as CustomEvent).detail;
@@ -164,9 +163,6 @@ const FoliateViewer: React.FC<{
         onClick={(event) => handleTurnPage(event)}
         ref={containerRef}
       />
-      {toastMessage && (
-        <Toast message={toastMessage} toastClass='toast-top toast-end' alertClass='alert-success' />
-      )}
     </>
   );
 };
diff --git a/apps/readest-app/src/app/reader/components/Reader.tsx b/apps/readest-app/src/app/reader/components/Reader.tsx
index e3518a1e..8a242ed9 100644
--- a/apps/readest-app/src/app/reader/components/Reader.tsx
+++ b/apps/readest-app/src/app/reader/components/Reader.tsx
@@ -5,10 +5,10 @@ import { useEffect, Suspense, useRef } from 'react';
 
 import { useEnv } from '@/context/EnvContext';
 import { useLibraryStore } from '@/store/libraryStore';
-
-import ReaderContent from './ReaderContent';
-import { AboutWindow } from '@/components/AboutWindow';
 import { useSettingsStore } from '@/store/settingsStore';
+import { AboutWindow } from '@/components/AboutWindow';
+import { Toast } from '@/components/Toast';
+import ReaderContent from './ReaderContent';
 
 const Reader: React.FC<{ ids?: string }> = ({ ids }) => {
   const { envConfig } = useEnv();
@@ -37,6 +37,7 @@ const Reader: React.FC<{ ids?: string }> = ({ ids }) => {
         <Suspense>
           <ReaderContent ids={ids} settings={settings} />
           <AboutWindow />
+          <Toast />
         </Suspense>
       </div>
     )
diff --git a/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx b/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx
index b11a3700..fb31d781 100644
--- a/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx
+++ b/apps/readest-app/src/app/reader/components/annotator/Annotator.tsx
@@ -23,7 +23,6 @@ import { useFoliateEvents } from '../../hooks/useFoliateEvents';
 import { useNotesSync } from '../../hooks/useNotesSync';
 import { getPopupPosition, getPosition, Position, TextSelection } from '@/utils/sel';
 import { eventDispatcher } from '@/utils/event';
-import Toast from '@/components/Toast';
 import AnnotationPopup from './AnnotationPopup';
 import WiktionaryPopup from './WiktionaryPopup';
 import WikipediaPopup from './WikipediaPopup';
@@ -57,7 +56,6 @@ const Annotator: React.FC<{ bookKey: string }> = ({ bookKey }) => {
   const [annotPopupPosition, setAnnotPopupPosition] = useState<Position>();
   const [dictPopupPosition, setDictPopupPosition] = useState<Position>();
   const [translatorPopupPosition, setTranslatorPopupPosition] = useState<Position>();
-  const [toastMessage, setToastMessage] = useState('');
   const [highlightOptionsVisible, setHighlightOptionsVisible] = useState(false);
 
   const [selectedStyle, setSelectedStyle] = useState<HighlightStyle>(
@@ -196,11 +194,6 @@ const Annotator: React.FC<{ bookKey: string }> = ({ bookKey }) => {
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [selection, bookKey]);
 
-  useEffect(() => {
-    const timer = setTimeout(() => setToastMessage(''), 2000);
-    return () => clearTimeout(timer);
-  }, [toastMessage]);
-
   useEffect(() => {
     if (!progress) return;
     const { location } = progress;
@@ -225,7 +218,12 @@ const Annotator: React.FC<{ bookKey: string }> = ({ bookKey }) => {
 
   const handleCopy = () => {
     if (!selection || !selection.text) return;
-    setToastMessage(_('Copied to notebook'));
+    eventDispatcher.dispatch('toast', {
+      type: 'info',
+      message: _('Copied to notebook'),
+      className: 'whitespace-nowrap',
+      timeout: 2000,
+    });
 
     const { booknotes: annotations = [] } = config;
     if (selection) navigator.clipboard.writeText(selection.text);
@@ -414,8 +412,6 @@ const Annotator: React.FC<{ bookKey: string }> = ({ bookKey }) => {
           onHighlight={handleHighlight}
         />
       )}
-
-      {toastMessage && <Toast message={toastMessage} alertClass='bg-neutual text-content' />}
     </div>
   );
 };
diff --git a/apps/readest-app/src/app/reader/components/tts/TTSControl.tsx b/apps/readest-app/src/app/reader/components/tts/TTSControl.tsx
index 84fb1189..c2725e6f 100644
--- a/apps/readest-app/src/app/reader/components/tts/TTSControl.tsx
+++ b/apps/readest-app/src/app/reader/components/tts/TTSControl.tsx
@@ -7,12 +7,14 @@ import { useReaderStore } from '@/store/readerStore';
 import Popup from '@/components/Popup';
 import TTSPanel from './TTSPanel';
 import TTSIcon from './TTSIcon';
+import { useTranslation } from '@/hooks/useTranslation';
 
 const POPUP_WIDTH = 260;
 const POPUP_HEIGHT = 80;
 const POPUP_PADDING = 10;
 
 const TTSControl = () => {
+  const _ = useTranslation();
   const { getView } = useReaderStore();
   const [isPlaying, setIsPlaying] = useState(false);
   const [showPanel, setShowPanel] = useState(false);
@@ -44,11 +46,19 @@ const TTSControl = () => {
     const view = getView(bookKey);
     if (!view) return;
 
-    const ttsClient = new WebSpeechClient();
-    const ttsController = new TTSController(ttsClient, view);
-    ttsControllerRef.current = ttsController;
-    ttsControllerRef.current.speak(ssml);
-    setIsPlaying(true);
+    try {
+      const ttsClient = new WebSpeechClient();
+      const ttsController = new TTSController(ttsClient, view);
+      ttsControllerRef.current = ttsController;
+      ttsControllerRef.current.speak(ssml);
+      setIsPlaying(true);
+    } catch (error) {
+      eventDispatcher.dispatch('toast', {
+        message: _('TTS not supported in this device'),
+        type: 'error',
+      });
+      console.error(error);
+    }
   };
 
   const handleTogglePlay = async () => {
@@ -59,7 +69,7 @@ const TTSControl = () => {
       ttsController.pause();
       setIsPlaying(false);
     } else {
-      await ttsController.start();
+      ttsController.start();
       setIsPlaying(true);
     }
   };
diff --git a/apps/readest-app/src/app/reader/hooks/useProgressSync.ts b/apps/readest-app/src/app/reader/hooks/useProgressSync.ts
index 36f4c011..bba9ff4e 100644
--- a/apps/readest-app/src/app/reader/hooks/useProgressSync.ts
+++ b/apps/readest-app/src/app/reader/hooks/useProgressSync.ts
@@ -7,12 +7,10 @@ import { useReaderStore } from '@/store/readerStore';
 import { useSettingsStore } from '@/store/settingsStore';
 import { useTranslation } from '@/hooks/useTranslation';
 import { deserializeConfig, serializeConfig } from '@/utils/serializer';
+import { eventDispatcher } from '@/utils/event';
 import { DEFAULT_BOOK_SEARCH_CONFIG, SYNC_PROGRESS_INTERVAL_SEC } from '@/services/constants';
 
-export const useProgressSync = (
-  bookKey: string,
-  setToastMessage?: React.Dispatch<React.SetStateAction<string>>,
-) => {
+export const useProgressSync = (bookKey: string) => {
   const _ = useTranslation();
   const { getConfig, setConfig } = useBookDataStore();
   const { getView } = useReaderStore();
@@ -98,7 +96,10 @@ export const useProgressSync = (
           const configFraction = config!.progress![0] / config!.progress![1];
           if (syncedFraction > configFraction) {
             view?.goToFraction(syncedFraction);
-            setToastMessage?.(_('Reading progress synced'));
+            eventDispatcher.dispatch('toast', {
+              type: 'success',
+              message: _('Reading progress synced'),
+            });
           }
         }
       }
diff --git a/apps/readest-app/src/components/Toast.tsx b/apps/readest-app/src/components/Toast.tsx
index 6249d522..5dfcd9a2 100644
--- a/apps/readest-app/src/components/Toast.tsx
+++ b/apps/readest-app/src/components/Toast.tsx
@@ -1,16 +1,65 @@
+import { eventDispatcher } from '@/utils/event';
 import clsx from 'clsx';
-import React from 'react';
+import React, { useEffect, useRef, useState } from 'react';
 
-const Toast: React.FC<{ message: string; toastClass?: string; alertClass?: string }> = ({
-  message,
-  toastClass,
-  alertClass,
-}) => (
-  <div className={clsx('toast toast-center toast-middle', toastClass)}>
-    <div className={clsx('alert flex items-center justify-center border-0', alertClass)}>
-      <span className='whitespace-normal break-words'>{message}</span>
-    </div>
-  </div>
-);
+export type ToastType = 'info' | 'success' | 'warning' | 'error';
 
-export default Toast;
+export const Toast = () => {
+  const [toastMessage, setToastMessage] = useState('');
+  const toastType = useRef<ToastType>('info');
+  const toastTimeout = useRef(5000);
+  const messageClass = useRef('');
+  const toastDismissTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const toastClassMap = {
+    info: 'toast-info toast-center toast-middle',
+    success: 'toast-success toast-top toast-end pt-11',
+    warning: 'toast-warning toast-top toast-end pt-11',
+    error: 'toast-error toast-top toast-end pt-11',
+  };
+  const alertClassMap = {
+    info: 'alert-primary',
+    success: 'alert-success',
+    warning: 'alert-warning',
+    error: 'alert-error',
+  };
+
+  useEffect(() => {
+    if (toastDismissTimeout.current) clearTimeout(toastDismissTimeout.current);
+    toastDismissTimeout.current = setTimeout(() => setToastMessage(''), toastTimeout.current);
+    return () => {
+      if (toastDismissTimeout.current) clearTimeout(toastDismissTimeout.current);
+    };
+  }, [toastMessage]);
+
+  const handleShowToast = async (event: CustomEvent) => {
+    const { message, type = 'info', timeout = 5000, className = '' } = event.detail;
+    setToastMessage(message);
+    toastType.current = type;
+    toastTimeout.current = timeout;
+    messageClass.current = className;
+  };
+
+  useEffect(() => {
+    eventDispatcher.on('toast', handleShowToast);
+    return () => {
+      eventDispatcher.off('toast', handleShowToast);
+    };
+  }, []);
+
+  return (
+    toastMessage && (
+      <div className={clsx('toast toast-center toast-middle', toastClassMap[toastType.current])}>
+        <div
+          className={clsx(
+            'alert flex max-w-80 items-center justify-center border-0',
+            alertClassMap[toastType.current],
+          )}
+        >
+          <span className={clsx('whitespace-normal break-words', messageClass.current)}>
+            {toastMessage}
+          </span>
+        </div>
+      </div>
+    )
+  );
+};
diff --git a/apps/readest-app/src/services/tts/WebSpeechClient.ts b/apps/readest-app/src/services/tts/WebSpeechClient.ts
index c3f88e64..21e06cab 100644
--- a/apps/readest-app/src/services/tts/WebSpeechClient.ts
+++ b/apps/readest-app/src/services/tts/WebSpeechClient.ts
@@ -72,7 +72,7 @@ function findMark(charIndex: number, marks: TTSMark[]) {
 async function* speakWithBoundary(ssml: string) {
   const lang = getXmlLang(ssml);
   const { plainText, marks } = parseSSMLMarks(ssml);
-  // console.log('text', plainText, marks);
+  // console.log('text', ssml, plainText, marks);
 
   const synth = window.speechSynthesis;
   const utterance = new SpeechSynthesisUtterance(plainText);
@@ -85,7 +85,7 @@ async function* speakWithBoundary(ssml: string) {
 
   utterance.onboundary = (event: SpeechSynthesisEvent) => {
     const mark = findMark(event.charIndex, marks);
-    // console.log('boundary', mark);
+    // console.log('boundary', event.charIndex, mark);
     queue.enqueue({
       type: 'boundary',
       speaking: true,
@@ -163,7 +163,6 @@ export class WebSpeechClient implements TTSClient {
 
   async setRate(rate: number) {
     // The Web Speech API uses utterance.rate in [0.1 .. 10],
-    // you might need to scale your “rate” to match.
     if (this.#utterance) this.#utterance.rate = rate / 10;
   }