diff --git a/apps/readest-app/src/app/reader/components/BooksGrid.tsx b/apps/readest-app/src/app/reader/components/BooksGrid.tsx
index 67eac266..6791e6ae 100644
--- a/apps/readest-app/src/app/reader/components/BooksGrid.tsx
+++ b/apps/readest-app/src/app/reader/components/BooksGrid.tsx
@@ -123,6 +123,7 @@ const BooksGrid: React.FC<BooksGridProps> = ({ bookKeys, onCloseBook }) => {
               bookKey={bookKey}
               bookDoc={bookDoc}
               config={config}
+              gridInsets={gridInsets}
               contentInsets={contentInsets}
             />
             {viewSettings.vertical && viewSettings.scrolled && (
diff --git a/apps/readest-app/src/app/reader/components/FoliateViewer.tsx b/apps/readest-app/src/app/reader/components/FoliateViewer.tsx
index 6a87d903..9c489328 100644
--- a/apps/readest-app/src/app/reader/components/FoliateViewer.tsx
+++ b/apps/readest-app/src/app/reader/components/FoliateViewer.tsx
@@ -58,16 +58,18 @@ const FoliateViewer: React.FC<{
   bookKey: string;
   bookDoc: BookDoc;
   config: BookConfig;
+  gridInsets: Insets;
   contentInsets: Insets;
-}> = ({ bookKey, bookDoc, config, contentInsets: insets }) => {
+}> = ({ bookKey, bookDoc, config, gridInsets, contentInsets: insets }) => {
   const { appService, envConfig } = useEnv();
   const { themeCode, isDarkMode } = useThemeStore();
   const { settings } = useSettingsStore();
   const { loadCustomFonts, getLoadedFonts } = useCustomFontStore();
   const { getView, setView: setFoliateView, setProgress } = useReaderStore();
-  const { getViewSettings, setViewSettings } = useReaderStore();
+  const { getViewState, getViewSettings, setViewSettings } = useReaderStore();
   const { getParallels } = useParallelViewStore();
   const { getBookData } = useBookDataStore();
+  const viewState = getViewState(bookKey);
   const viewSettings = getViewSettings(bookKey);
 
   const viewRef = useRef<FoliateView | null>(null);
@@ -308,6 +310,7 @@ const FoliateViewer: React.FC<{
 
   const applyMarginAndGap = () => {
     const viewSettings = getViewSettings(bookKey)!;
+    const viewState = getViewState(bookKey);
     const viewInsets = getViewInsets(viewSettings);
     const showDoubleBorder = viewSettings.vertical && viewSettings.doubleBorder;
     const showDoubleBorderHeader = showDoubleBorder && viewSettings.showHeader;
@@ -315,7 +318,11 @@ const FoliateViewer: React.FC<{
     const showTopHeader = viewSettings.showHeader && !viewSettings.vertical;
     const showBottomFooter = viewSettings.showFooter && !viewSettings.vertical;
     const moreTopInset = showTopHeader ? Math.max(0, 44 - insets.top) : 0;
-    const moreBottomInset = showBottomFooter ? Math.max(0, 44 - insets.bottom) : 0;
+    const ttsBarHeight =
+      viewState?.ttsEnabled && viewSettings.showTTSBar ? 52 + gridInsets.bottom * 0.33 : 0;
+    const moreBottomInset = showBottomFooter
+      ? Math.max(0, Math.max(ttsBarHeight, 44) - insets.bottom)
+      : Math.max(0, ttsBarHeight);
     const moreRightInset = showDoubleBorderHeader ? 32 : 0;
     const moreLeftInset = showDoubleBorderFooter ? 32 : 0;
     const topMargin = (showTopHeader ? insets.top : viewInsets.top) + moreTopInset;
@@ -379,6 +386,8 @@ const FoliateViewer: React.FC<{
     viewSettings?.doubleBorder,
     viewSettings?.showHeader,
     viewSettings?.showFooter,
+    viewSettings?.showTTSBar,
+    viewState?.ttsEnabled,
   ]);
 
   return (
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 ac496255..8b57c9e1 100644
--- a/apps/readest-app/src/app/reader/components/tts/TTSControl.tsx
+++ b/apps/readest-app/src/app/reader/components/tts/TTSControl.tsx
@@ -68,11 +68,6 @@ const TTSControl: React.FC<TTSControlProps> = ({ bookKey, gridInsets }) => {
     unblockerAudioRef.current.addEventListener('play', () => {
       if ('mediaSession' in navigator) {
         navigator.mediaSession.metadata = null;
-        navigator.mediaSession.setActionHandler('play', null);
-        navigator.mediaSession.setActionHandler('pause', null);
-        navigator.mediaSession.setActionHandler('stop', null);
-        navigator.mediaSession.setActionHandler('seekbackward', null);
-        navigator.mediaSession.setActionHandler('seekforward', null);
       }
     });
     unblockerAudioRef.current.preload = 'auto';
@@ -127,7 +122,7 @@ const TTSControl: React.FC<TTSControlProps> = ({ bookKey, gridInsets }) => {
       const mark = (e as CustomEvent<TTSMark>).detail;
       if (appService?.isMobileApp && 'mediaSession' in navigator) {
         navigator.mediaSession.metadata = new MediaMetadata({
-          title: mark.text,
+          title: mark?.text || '',
           artist: sectionLabel || title,
           album: author,
           artwork: [{ src: coverImageUrl || '/icon.png', sizes: '512x512', type: 'image/png' }],
@@ -244,7 +239,7 @@ const TTSControl: React.FC<TTSControlProps> = ({ bookKey, gridInsets }) => {
     }
   };
 
-  const handleTogglePlay = async () => {
+  const handleTogglePlay = useCallback(async () => {
     const ttsController = ttsControllerRef.current;
     if (!ttsController) return;
 
@@ -263,41 +258,54 @@ const TTSControl: React.FC<TTSControlProps> = ({ bookKey, gridInsets }) => {
         await ttsController.start();
       }
     }
-  };
+  }, [isPlaying, isPaused]);
 
-  const handleBackward = async () => {
+  const handleBackward = useCallback(async () => {
     const ttsController = ttsControllerRef.current;
     if (ttsController) {
       await ttsController.backward();
     }
-  };
+  }, []);
 
-  const handleForward = async () => {
+  const handleForward = useCallback(async () => {
     const ttsController = ttsControllerRef.current;
     if (ttsController) {
       await ttsController.forward();
     }
-  };
+  }, []);
 
-  const handleStop = async (bookKey: string) => {
+  const handlePause = useCallback(async () => {
     const ttsController = ttsControllerRef.current;
     if (ttsController) {
-      await ttsController.shutdown();
-      ttsControllerRef.current = null;
-      setTtsController(null);
-      getView(bookKey)?.deselect();
       setIsPlaying(false);
-      setShowPanel(false);
-      setShowIndicator(false);
+      setIsPaused(true);
+      await ttsController.pause();
     }
-    if (appService?.isIOSApp) {
-      await invokeUseBackgroundAudio({ enabled: false });
-    }
-    if (appService?.isMobile) {
-      releaseUnblockAudio();
-    }
-    setTTSEnabled(bookKey, false);
-  };
+  }, []);
+
+  const handleStop = useCallback(
+    async (bookKey: string) => {
+      const ttsController = ttsControllerRef.current;
+      if (ttsController) {
+        await ttsController.shutdown();
+        ttsControllerRef.current = null;
+        setTtsController(null);
+        getView(bookKey)?.deselect();
+        setIsPlaying(false);
+        setShowPanel(false);
+        setShowIndicator(false);
+      }
+      if (appService?.isIOSApp) {
+        await invokeUseBackgroundAudio({ enabled: false });
+      }
+      if (appService?.isMobile) {
+        releaseUnblockAudio();
+      }
+      setTTSEnabled(bookKey, false);
+    },
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    [appService],
+  );
 
   // rate range: 0.5 - 3, 1.0 is normal speed
   // eslint-disable-next-line react-hooks/exhaustive-deps
@@ -415,6 +423,30 @@ const TTSControl: React.FC<TTSControlProps> = ({ bookKey, gridInsets }) => {
     setShowPanel(false);
   };
 
+  useEffect(() => {
+    if ('mediaSession' in navigator) {
+      navigator.mediaSession.setActionHandler('play', () => {
+        handleTogglePlay();
+      });
+
+      navigator.mediaSession.setActionHandler('pause', () => {
+        handleTogglePlay();
+      });
+
+      navigator.mediaSession.setActionHandler('stop', () => {
+        handlePause();
+      });
+
+      navigator.mediaSession.setActionHandler('seekforward', () => {
+        handleForward();
+      });
+
+      navigator.mediaSession.setActionHandler('seekbackward', () => {
+        handleBackward();
+      });
+    }
+  }, [handleTogglePlay, handlePause, handleForward, handleBackward]);
+
   useEffect(() => {
     if (!iconRef.current || !showPanel) return;
     const parentElement = iconRef.current.parentElement;
diff --git a/apps/readest-app/src/services/tts/TTSController.ts b/apps/readest-app/src/services/tts/TTSController.ts
index a911c8ab..370d81bd 100644
--- a/apps/readest-app/src/services/tts/TTSController.ts
+++ b/apps/readest-app/src/services/tts/TTSController.ts
@@ -219,6 +219,7 @@ export class TTSController extends EventTarget {
     await this.initViewTTS();
     this.#speak(ssml).catch((e) => this.error(e));
     this.preloadNextSSML();
+    this.dispatchSpeakMark();
   }
 
   play() {
@@ -357,8 +358,8 @@ export class TTSController extends EventTarget {
     return this.ttsClient.getSpeakingLang();
   }
 
-  dispatchSpeakMark(mark: TTSMark) {
-    this.dispatchEvent(new CustomEvent('tts-speak-mark', { detail: mark }));
+  dispatchSpeakMark(mark?: TTSMark) {
+    this.dispatchEvent(new CustomEvent('tts-speak-mark', { detail: mark || { text: '' } }));
   }
 
   error(e: unknown) {
diff --git a/apps/readest-app/wrangler.toml b/apps/readest-app/wrangler.toml
index 4886a927..cc654a61 100644
--- a/apps/readest-app/wrangler.toml
+++ b/apps/readest-app/wrangler.toml
@@ -5,7 +5,7 @@ compatibility_flags = ["nodejs_compat"]
 
 [observability]
 enabled = true
-head_sampling_rate = 1
+head_sampling_rate = 0.01
 
 [assets]
 directory = ".open-next/assets"