diff --git a/ios/ExampleiOSApp/App.swift b/ios/ExampleiOSApp/App.swift
new file mode 100644
index 0000000..1be5703
--- /dev/null
+++ b/ios/ExampleiOSApp/App.swift
@@ -0,0 +1,10 @@
+import SwiftUI
+
+@main
+struct ExampleiOSApp: App {
+    var body: some Scene {
+        WindowGroup {
+            ContentView()
+        }
+    }
+}
diff --git a/ios/ExampleiOSApp/AudioPlayer.swift b/ios/ExampleiOSApp/AudioPlayer.swift
new file mode 100644
index 0000000..e6f178d
--- /dev/null
+++ b/ios/ExampleiOSApp/AudioPlayer.swift
@@ -0,0 +1,30 @@
+import Foundation
+import AVFoundation
+
+final class AudioPlayer: NSObject, AVAudioPlayerDelegate {
+    private var player: AVAudioPlayer?
+    private var onFinish: (() -> Void)?
+
+    func play(url: URL, onFinish: (() -> Void)? = nil) {
+        self.onFinish = onFinish
+        do {
+            let data = try Data(contentsOf: url)
+            let player = try AVAudioPlayer(data: data)
+            player.delegate = self
+            player.prepareToPlay()
+            player.play()
+            self.player = player
+        } catch {
+            print("Audio play error: \(error)")
+        }
+    }
+
+    func stop() {
+        player?.stop()
+        player = nil
+    }
+
+    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
+        onFinish?()
+    }
+}
diff --git a/ios/ExampleiOSApp/ContentView.swift b/ios/ExampleiOSApp/ContentView.swift
new file mode 100644
index 0000000..0d380af
--- /dev/null
+++ b/ios/ExampleiOSApp/ContentView.swift
@@ -0,0 +1,98 @@
+import SwiftUI
+
+struct ContentView: View {
+    @StateObject private var vm = TTSViewModel()
+
+    var body: some View {
+        ZStack {
+            LinearGradient(gradient: Gradient(colors: [Color(.systemBackground), Color(.secondarySystemBackground)]), startPoint: .topLeading, endPoint: .bottomTrailing)
+                .ignoresSafeArea()
+
+            VStack(spacing: 20) {
+                Spacer()
+
+                VStack(spacing: 12) {
+                    Text("SupertonicTTS iOS Demo")
+                        .font(.title2.weight(.semibold))
+                        .foregroundColor(.primary)
+
+                    ZStack(alignment: .topLeading) {
+                        if vm.text.isEmpty {
+                            Text("Type text to synthesize")
+                                .foregroundColor(.secondary)
+                                .padding(.horizontal, 14)
+                                .padding(.vertical, 12)
+                        }
+                        TextEditor(text: $vm.text)
+                            .frame(minHeight: 120, maxHeight: 180)
+                            .padding(8)
+                            .background(Color(.secondarySystemBackground))
+                            .cornerRadius(12)
+                            .overlay(
+                                RoundedRectangle(cornerRadius: 12)
+                                    .stroke(Color.secondary.opacity(0.3), lineWidth: 1)
+                            )
+                    }
+                    .padding(.horizontal)
+
+                    HStack(spacing: 12) {
+                        Text("NFE")
+                            .font(.subheadline)
+                            .foregroundColor(.secondary)
+                        Slider(value: $vm.nfe, in: 2...15, step: 1)
+                        Text("\(Int(vm.nfe))")
+                            .font(.subheadline.monospacedDigit())
+                            .frame(width: 36)
+                    }
+                    .padding(.horizontal)
+
+                    Picker("Voice", selection: $vm.voice) {
+                        Text("M").tag(TTSService.Voice.male)
+                        Text("F").tag(TTSService.Voice.female)
+                    }
+                    .pickerStyle(SegmentedPickerStyle())
+                    .padding(.horizontal)
+                }
+
+                HStack(spacing: 16) {
+                    Button(action: { vm.generate() }) {
+                        Label(vm.isGenerating ? "Generating..." : "Generate", systemImage: vm.isGenerating ? "hourglass" : "wand.and.stars"
+                        )
+                        .labelStyle(.titleAndIcon)
+                    }
+                    .buttonStyle(.borderedProminent)
+                    .tint(.accentColor)
+                    .disabled(vm.isGenerating)
+
+                    Button(action: { vm.togglePlay() }) {
+                        Label(vm.isPlaying ? "Stop" : "Play", systemImage: vm.isPlaying ? "stop.fill" : "play.fill")
+                    }
+                    .buttonStyle(.bordered)
+                    .disabled(vm.audioURL == nil)
+                }
+
+                if let rtf = vm.rtfText {
+                    Text(rtf)
+                        .font(.footnote.monospacedDigit())
+                        .foregroundColor(.secondary)
+                        .padding(.top, 2)
+                }
+
+                if let error = vm.errorMessage {
+                    Text(error)
+                        .foregroundColor(.red)
+                        .font(.footnote)
+                        .multilineTextAlignment(.center)
+                        .padding(.horizontal)
+                }
+
+                Spacer()
+            }
+        }
+        .onAppear { vm.startup() }
+    }
+}
+
+#Preview {
+    ContentView()
+}
diff --git a/ios/ExampleiOSApp/Info.plist b/ios/ExampleiOSApp/Info.plist
new file mode 100644
index 0000000..aa1ea23
--- /dev/null
+++ b/ios/ExampleiOSApp/Info.plist
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>ExampleiOSApp</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>UILaunchScreen</key>
+	<dict/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+	</dict>
+</dict>
+</plist>
diff --git a/ios/ExampleiOSApp/TTSService.swift b/ios/ExampleiOSApp/TTSService.swift
new file mode 100644
index 0000000..5d3189e
--- /dev/null
+++ b/ios/ExampleiOSApp/TTSService.swift
@@ -0,0 +1,140 @@
+import Foundation
+import OnnxRuntimeBindings
+
+final class TTSService {
+    enum Voice { case male, female }
+
+    struct Settings {
+        var nTest: Int = 1
+    }
+
+    struct SynthesisResult {
+        let url: URL
+        let elapsedSeconds: Double
+        let audioSeconds: Double
+        var rtf: Double { elapsedSeconds / max(audioSeconds, 1e-6) }
+    }
+
+    private let env: ORTEnv
+    private let textToSpeech: TextToSpeech
+    private let bundleOnnxDir: String
+    private let sampleRate: Int
+
+    // Cached style per voice (precomputed at startup or on first use)
+    private var cachedStyle: [Voice: Style] = [:]
+
+    init() throws {
+        bundleOnnxDir = try Self.locateOnnxDirInBundle()
+        env = try ORTEnv(loggingLevel: .warning)
+        textToSpeech = try loadTextToSpeech(bundleOnnxDir, false, env)
+        sampleRate = textToSpeech.sampleRate
+    }
+
+    // Public warmup: precompute styles and run a quick generation to warm models
+    func warmup(nfe: Int = 1) async {
+        do { try precomputeStyle(for: .male) } catch { print("Warmup style (M) error: \(error)") }
+        do { try precomputeStyle(for: .female) } catch { print("Warmup style (F) error: \(error)") }
+        // Run a tiny synthesis to JIT/warm up kernels; discard file
+        do {
+            let res = try await synthesize(text: "Warm up", nfe: max(1, nfe), voice: .male)
+            try? FileManager.default.removeItem(at: res.url)
+        } catch {
+            print("Warmup synth error: \(error)")
+        }
+    }
+
+    func synthesize(text: String, nfe: Int, voice: Voice, settings: Settings = Settings()) async throws -> SynthesisResult {
+        let tic = Date()
+
+        // 1) Get or compute style for the selected voice
+        let style = try getStyle(voice: voice)
+
+        // 2) Synthesize via packed TextToSpeech component
+        let (wav, duration) = try textToSpeech.call([text], style, nfe)
+        let audioSeconds = Double(duration[0])
+        let wavLenSample = min(Int(Double(sampleRate) * audioSeconds), wav.count)
+        let wavOut = Array(wav[0..<wavLenSample])
+
+        let tmpURL = FileManager.default.temporaryDirectory.appendingPathComponent("supertonic_tts_\(UUID().uuidString).wav")
+        try writeWavFile(tmpURL.path, wavOut, sampleRate)
+
+        let elapsed = Date().timeIntervalSince(tic)
+        return SynthesisResult(url: tmpURL, elapsedSeconds: elapsed, audioSeconds: audioSeconds)
+    }
+
+    // MARK: - Style helpers
+    private func precomputeStyle(for voice: Voice) throws {
+        if cachedStyle[voice] != nil { return }
+        let styleURL = try Self.locateVoiceStyleURL(voice: voice)
+        let style = try loadVoiceStyle([styleURL.path], verbose: false)
+        cachedStyle[voice] = style
+    }
+
+    private func getStyle(voice: Voice) throws -> Style {
+        if let style = cachedStyle[voice] { return style }
+        try precomputeStyle(for: voice)
+        return cachedStyle[voice]!
+    }
+
+    // MARK: - Resource location helpers
+    private static func locateOnnxDirInBundle() throws -> String {
+        let bundle = Bundle.main
+        let fm = FileManager.default
+
+        func dirHasRequiredFiles(_ dir: URL) -> Bool {
+            let required = [
+                "tts.json",
+                "duration_predictor.onnx",
+                "text_encoder.onnx",
+                "vector_estimator.onnx",
+                "vocoder.onnx"
+            ]
+            return required.allSatisfy { fm.fileExists(atPath: dir.appendingPathComponent($0).path) }
+        }
+
+        var candidates: [URL] = []
+        if let dir = bundle.resourceURL?.appendingPathComponent("onnx", isDirectory: true) { candidates.append(dir) }
+        if let dir = bundle.resourceURL?.appendingPathComponent("assets/onnx", isDirectory: true) { candidates.append(dir) }
+        if let url = bundle.url(forResource: "tts", withExtension: "json", subdirectory: "onnx") { candidates.append(url.deletingLastPathComponent()) }
+        if let url = bundle.url(forResource: "tts", withExtension: "json", subdirectory: "assets/onnx") { candidates.append(url.deletingLastPathComponent()) }
+        if let url = bundle.url(forResource: "tts", withExtension: "json", subdirectory: nil) { candidates.append(url.deletingLastPathComponent()) }
+        if let root = bundle.resourceURL { candidates.append(root) }
+
+        for dir in candidates {
+            if dirHasRequiredFiles(dir) { return dir.path }
+        }
+        throw NSError(
+            domain: "TTS",
+            code: -100,
+            userInfo: [NSLocalizedDescriptionKey: "Could not find the onnx directory in the bundle. Please make sure the onnx folder (as a folder reference) is included in Copy Bundle Resources in Xcode."]
+        )
+    }
+
+    private static func locateVoiceStyleURL(voice: Voice) throws -> URL {
+        // Prefer M1/F1 defaults; search common subdirectories
+        let fileName = (voice == .male) ? "M1" : "F1"
+        let bundle = Bundle.main
+        let candidates: [URL?] = [
+            bundle.url(forResource: fileName, withExtension: "json", subdirectory: "voice_styles"),
+            bundle.url(forResource: fileName, withExtension: "json", subdirectory: "assets/voice_styles"),
+            bundle.url(forResource: fileName, withExtension: "json", subdirectory: nil)
+        ]
+        for url in candidates {
+            if let url = url { return url }
+        }
+        // Fallback: scan folders if needed
+        if let folder1 = bundle.resourceURL?.appendingPathComponent("voice_styles", isDirectory: true) {
+            let file = folder1.appendingPathComponent("\(fileName).json")
+            if FileManager.default.fileExists(atPath: file.path) { return file }
+        }
+        if let folder2 = bundle.resourceURL?.appendingPathComponent("assets/voice_styles", isDirectory: true) {
+            let file = folder2.appendingPathComponent("\(fileName).json")
+            if FileManager.default.fileExists(atPath: file.path) { return file }
+        }
+        throw NSError(
+            domain: "TTS",
+            code: -102,
+            userInfo: [NSLocalizedDescriptionKey: "Could not find the voice style JSON (\(fileName).json) in the bundle. Ensure voice_styles folder is included in Copy Bundle Resources."]
+        )
+    }
+}
diff --git a/ios/ExampleiOSApp/TTSViewModel.swift b/ios/ExampleiOSApp/TTSViewModel.swift
new file mode 100644
index 0000000..318c862
--- /dev/null
+++ b/ios/ExampleiOSApp/TTSViewModel.swift
@@ -0,0 +1,76 @@
+import Foundation
+import AVFoundation
+
+@MainActor
+final class TTSViewModel: ObservableObject {
+    @Published var text: String = "This morning, I took a walk in the park, and the sound of the birds and the breeze was so pleasant that I stopped for a long time just to listen."
+    @Published var nfe: Double = 5
+    @Published var voice: TTSService.Voice = .male
+    @Published var isGenerating: Bool = false
+    @Published var isPlaying: Bool = false
+    @Published var errorMessage: String?
+    @Published var audioURL: URL?
+
+    @Published var elapsedSeconds: Double?
+    @Published var audioSeconds: Double?
+
+    private var service: TTSService?
+    private var player = AudioPlayer()
+
+    var rtfText: String? {
+        guard let e = elapsedSeconds, let a = audioSeconds, a > 0 else { return nil }
+        let rtf = e / a
+        return String(format: "RTF %.2fx · %.2fs / %.2fs", rtf, e, a)
+    }
+
+    func startup() {
+        do {
+            service = try TTSService()
+            Task { await self.service?.warmup(nfe: 5) }
+        } catch {
+            errorMessage = "Failed to init TTS: \(error.localizedDescription)"
+        }
+    }
+
+    func generate() {
+        guard let service = service else { return }
+        isGenerating = true
+        errorMessage = nil
+        audioURL = nil
+        elapsedSeconds = nil
+        audioSeconds = nil
+        Task {
+            do {
+                let result = try await service.synthesize(text: text, nfe: Int(nfe), voice: voice)
+                await MainActor.run {
+                    self.audioURL = result.url
+                    self.elapsedSeconds = result.elapsedSeconds
+                    self.audioSeconds = result.audioSeconds
+                    self.isGenerating = false
+                }
+                self.play(url: result.url)
+            } catch {
+                await MainActor.run {
+                    self.errorMessage = error.localizedDescription
+                    self.isGenerating = false
+                }
+            }
+        }
+    }
+
+    func togglePlay() {
+        if isPlaying {
+            player.stop()
+            isPlaying = false
+        } else if let url = audioURL {
+            play(url: url)
+        }
+    }
+
+    private func play(url: URL) {
+        player.play(url: url) { [weak self] in
+            DispatchQueue.main.async { self?.isPlaying = false }
+        }
+        isPlaying = true
+    }
+}
diff --git a/ios/ExampleiOSApp/project.yml b/ios/ExampleiOSApp/project.yml
new file mode 100644
index 0000000..9bef665
--- /dev/null
+++ b/ios/ExampleiOSApp/project.yml
@@ -0,0 +1,29 @@
+name: ExampleiOSApp
+options:
+  minimumXcodeGenVersion: 2.37.0
+packages:
+  onnxruntime:
+    url: https://github.com/microsoft/onnxruntime-swift-package-manager.git
+    from: 1.16.0
+targets:
+  ExampleiOSApp:
+    type: application
+    platform: iOS
+    deploymentTarget: "15.0"
+    sources:
+      - path: .
+      - path: ../../swift/Sources/Helper.swift <<- 여기
+        type: file
+    resources:
+      - path: onnx
+        type: folder
+      - path: audio
+        type: folder
+    settings:
+      base:
+        PRODUCT_BUNDLE_IDENTIFIER: com.supertonic.ExampleiOSApp
+        SWIFT_VERSION: 5.9
+        INFOPLIST_FILE: Info.plist
+    dependencies:
+      - package: onnxruntime
+        product: onnxruntime
diff --git a/ios/README.md b/ios/README.md
new file mode 100644
index 0000000..9871218
--- /dev/null
+++ b/ios/README.md
@@ -0,0 +1,59 @@
+# Supertonic iOS Example App
+
+A minimal iOS demo that runs Supertonic (ONNX Runtime) on-device. The app shows:
+- Multiline text input
+- NFE (denoising steps) slider
+- Voice toggle (M/F)
+- Generate & Play buttons
+- RTF display (Elapsed / Audio seconds)
+
+All ONNX models/configs are reused from `Supertonic/assets/onnx`, and voice style JSON files from `Supertonic/assets/voice_styles`.
+
+## Prerequisites
+- macOS 13+, Xcode 15+
+- Swift 5.9+
+- iOS 15+ device (recommended)
+- Homebrew, XcodeGen
+
+Install tools (if needed):
+```bash
+brew install xcodegen
+```
+
+## Quick Start (zero-click in Xcode)
+0) Prepare assets next to the iOS target (one-time)
+```bash
+cd ios/ExampleiOSApp
+mkdir -p onnx voice_styles
+rsync -a ../../assets/onnx/ onnx/
+rsync -a ../../assets/voice_styles/ voice_styles/
+```
+
+1) Generate the Xcode project with XcodeGen
+```bash
+xcodegen generate
+open ExampleiOSApp.xcodeproj
+```
+
+2) Open in Xcode and select your iPhone as the run destination
+- Targets → ExampleiOSApp → Signing & Capabilities: Select your Team
+- iOS Deployment Target: 15.0+
+
+3) Build & Run on device
+- Type text → adjust NFE/Voice → Tap Generate → Audio plays automatically
+- An RTF line shows like: `RTF 0.30x · 3.04s / 10.11s`
+
+## What's included (generated project)
+- SwiftUI app files: `App.swift`, `ContentView.swift`, `TTSViewModel.swift`, `AudioPlayer.swift`
+- Runtime wrapper: `TTSService.swift` (includes TTS inference logic)
+- Resources (local, vendored in `ios/ExampleiOSApp/onnx` and `ios/ExampleiOSApp/voice_styles` after step 0)
+
+These references are defined in `project.yml` and added to the app bundle by XcodeGen.
+
+## App Controls
+- **Text**: Multiline `TextEditor`
+- **NFE**: Denoising steps (default 5)
+- **Voice**: M1/M2/F1/F2 voice style selector (4 pre-extracted styles)
+- **Generate**: Runs end-to-end synthesis
+- **Play/Stop**: Controls playback of the last output
+- **RTF**: Shows Elapsed / Audio seconds for quick performance intuition
\ No newline at end of file
diff --git a/web/.gitignore b/web/.gitignore
new file mode 100644
index 0000000..9451024
--- /dev/null
+++ b/web/.gitignore
@@ -0,0 +1,4 @@
+node_modules/
+dist/
+.DS_Store
+*.log
diff --git a/web/README.md b/web/README.md
new file mode 100644
index 0000000..1daf225
--- /dev/null
+++ b/web/README.md
@@ -0,0 +1,106 @@
+# Supertonic Web Example
+
+This example demonstrates how to use Supertonic in a web browser using ONNX Runtime Web.
+
+## 📰 Update News
+
+**2025.11.23** - Enhanced text preprocessing with comprehensive normalization, emoji removal, symbol replacement, and punctuation handling for improved synthesis quality.
+
+**2025.11.19** - Added speed control slider to adjust speech synthesis speed (default: 1.05, recommended range: 0.9-1.5).
+
+**2025.11.19** - Added automatic text chunking for long-form inference. Long texts are split into chunks and synthesized with natural pauses.
+
+## Features
+
+- 🌐 Runs entirely in the browser (no server required for inference)
+- 🚀 WebGPU support with automatic fallback to WebAssembly
+- ⚡ Pre-extracted voice styles for instant generation
+- 🎨 Modern, responsive UI
+- 🎭 Multiple voice style presets (2 Male, 2 Female)
+- 💾 Download generated audio as WAV files
+- 📊 Detailed generation statistics (audio length, generation time)
+- ⏱️ Real-time progress tracking
+
+## Requirements
+
+- Node.js (for development server)
+- Modern web browser (Chrome, Edge, Firefox, Safari)
+
+## Installation
+
+1. Install dependencies:
+
+```bash
+npm install
+```
+
+## Running the Demo
+
+Start the development server:
+
+```bash
+npm run dev
+```
+
+This will start a local development server (usually at http://localhost:3000) and open the demo in your browser.
+
+## Usage
+
+1. **Wait for Models to Load**: The app will automatically load models and the default voice style (M1)
+2. **Select Voice Style**: Choose from available voice presets
+   - **Male 1 (M1)**: Default male voice
+   - **Male 2 (M2)**: Alternative male voice
+   - **Female 1 (F1)**: Default female voice
+   - **Female 2 (F2)**: Alternative female voice
+3. **Enter Text**: Type or paste the text you want to convert to speech
+4. **Adjust Settings** (optional):
+   - **Total Steps**: More steps = better quality but slower (default: 5)
+5. **Generate Speech**: Click the "Generate Speech" button
+6. **View Results**: 
+   - See the full input text
+   - View audio length and generation time statistics
+   - Play the generated audio in the browser
+   - Download as WAV file
+
+## Technical Details
+
+### Browser Compatibility
+
+This demo uses:
+- **ONNX Runtime Web**: For running models in the browser
+- **Web Audio API**: For playing generated audio
+- **Vite**: For development and bundling
+
+## Notes
+
+- The ONNX models must be accessible at `assets/onnx/` relative to the web root
+- Voice style JSON files must be accessible at `assets/voice_styles/` relative to the web root
+- Pre-extracted voice styles enable instant generation without audio processing
+- Four voice style presets are provided (M1, M2, F1, F2)
+
+## Troubleshooting
+
+### Models not loading
+- Check browser console for errors
+- Ensure `assets/onnx/` path is correct and models are accessible
+- Check CORS settings if serving from a different domain
+
+### WebGPU not available
+- WebGPU is only available in recent Chrome/Edge browsers (version 113+)
+- The app will automatically fall back to WebAssembly if WebGPU is not available
+- Check the backend badge to see which execution provider is being used
+
+### Out of memory errors
+- Try shorter text inputs
+- Reduce denoising steps
+- Use a browser with more available memory
+- Close other tabs to free up memory
+
+### Audio quality issues
+- Try different voice style presets
+- Increase denoising steps for better quality
+
+### Slow generation
+- If using WebAssembly, try a browser that supports WebGPU
+- Ensure no other heavy processes are running
+- Consider using fewer denoising steps for faster (but lower quality) results
\ No newline at end of file
diff --git a/web/assets b/web/assets
new file mode 120000
index 0000000..ec2e4be
--- /dev/null
+++ b/web/assets
@@ -0,0 +1 @@
+../assets
\ No newline at end of file
diff --git a/web/helper.js b/web/helper.js
new file mode 100644
index 0000000..2022866
--- /dev/null
+++ b/web/helper.js
@@ -0,0 +1,550 @@
+import * as ort from 'onnxruntime-web';
+
+/**
+ * Unicode Text Processor
+ */
+export class UnicodeProcessor {
+    constructor(indexer) {
+        this.indexer = indexer;
+    }
+
+    call(textList) {
+        const processedTexts = textList.map(text => this.preprocessText(text));
+        
+        const textIdsLengths = processedTexts.map(text => text.length);
+        const maxLen = Math.max(...textIdsLengths);
+        
+        const textIds = processedTexts.map(text => {
+            const row = new Array(maxLen).fill(0);
+            for (let j = 0; j < text.length; j++) {
+                const codePoint = text.codePointAt(j);
+                row[j] = (codePoint < this.indexer.length) ? this.indexer[codePoint] : -1;
+            }
+            return row;
+        });
+        
+        const textMask = this.getTextMask(textIdsLengths);
+        return { textIds, textMask };
+    }
+
+    preprocessText(text) {
+        // TODO: Need advanced normalizer for better performance
+        text = text.normalize('NFKD');
+
+        // FIXME: this should be fixed for non-English languages
+
+        // Remove emojis (wide Unicode range)
+        const emojiPattern = /[\u{1F600}-\u{1F64F}\u{1F300}-\u{1F5FF}\u{1F680}-\u{1F6FF}\u{1F700}-\u{1F77F}\u{1F780}-\u{1F7FF}\u{1F800}-\u{1F8FF}\u{1F900}-\u{1F9FF}\u{1FA00}-\u{1FA6F}\u{1FA70}-\u{1FAFF}\u{2600}-\u{26FF}\u{2700}-\u{27BF}\u{1F1E6}-\u{1F1FF}]+/gu;
+        text = text.replace(emojiPattern, '');
+
+        // Replace various dashes and symbols
+        const replacements = {
+            '–': '-',
+            '‑': '-',
+            '—': '-',
+            '¯': ' ',
+            '_': ' ',
+            '"': '"',
+            '"': '"',
+            '\u2018': "'",  // left single quote
+            '\u2019': "'",  // right single quote
+            '´': "'",
+            '`': "'",
+            '[': ' ',
+            ']': ' ',
+            '|': ' ',
+            '/': ' ',
+            '#': ' ',
+            '→': ' ',
+            '←': ' ',
+        };
+        for (const [k, v] of Object.entries(replacements)) {
+            text = text.replaceAll(k, v);
+        }
+
+        // Remove combining diacritics // FIXME: this should be fixed for non-English languages
+        text = text.replace(/[\u0302\u0303\u0304\u0305\u0306\u0307\u0308\u030A\u030B\u030C\u0327\u0328\u0329\u032A\u032B\u032C\u032D\u032E\u032F]/g, '');
+
+        // Remove special symbols
+        text = text.replace(/[♥☆♡©\\]/g, '');
+
+        // Replace known expressions
+        const exprReplacements = {
+            '@': ' at ',
+            'e.g.,': 'for example, ',
+            'i.e.,': 'that is, ',
+        };
+        for (const [k, v] of Object.entries(exprReplacements)) {
+            text = text.replaceAll(k, v);
+        }
+
+        // Fix spacing around punctuation
+        text = text.replace(/ ,/g, ',');
+        text = text.replace(/ \./g, '.');
+        text = text.replace(/ !/g, '!');
+        text = text.replace(/ \?/g, '?');
+        text = text.replace(/ ;/g, ';');
+        text = text.replace(/ :/g, ':');
+        text = text.replace(/ '/g, "'");
+
+        // Remove duplicate quotes
+        while (text.includes('""')) {
+            text = text.replace('""', '"');
+        }
+        while (text.includes("''")) {
+            text = text.replace("''", "'");
+        }
+        while (text.includes('``')) {
+            text = text.replace('``', '`');
+        }
+
+        // Remove extra spaces
+        text = text.replace(/\s+/g, ' ').trim();
+
+        // If text doesn't end with punctuation, quotes, or closing brackets, add a period
+        if (!/[.!?;:,'\"')\]}…。」』】〉》›»]$/.test(text)) {
+            text += '.';
+        }
+
+        return text;
+    }
+
+    getTextMask(textIdsLengths) {
+        const maxLen = Math.max(...textIdsLengths);
+        return this.lengthToMask(textIdsLengths, maxLen);
+    }
+
+    lengthToMask(lengths, maxLen = null) {
+        const actualMaxLen = maxLen || Math.max(...lengths);
+        return lengths.map(len => {
+            const row = new Array(actualMaxLen).fill(0.0);
+            for (let j = 0; j < Math.min(len, actualMaxLen); j++) {
+                row[j] = 1.0;
+            }
+            return [row];
+        });
+    }
+}
+
+/**
+ * Style class to hold TTL and DP tensors
+ */
+export class Style {
+    constructor(ttlTensor, dpTensor) {
+        this.ttl = ttlTensor;
+        this.dp = dpTensor;
+    }
+}
+
+/**
+ * Text-to-Speech class
+ */
+export class TextToSpeech {
+    constructor(cfgs, textProcessor, dpOrt, textEncOrt, vectorEstOrt, vocoderOrt) {
+        this.cfgs = cfgs;
+        this.textProcessor = textProcessor;
+        this.dpOrt = dpOrt;
+        this.textEncOrt = textEncOrt;
+        this.vectorEstOrt = vectorEstOrt;
+        this.vocoderOrt = vocoderOrt;
+        this.sampleRate = cfgs.ae.sample_rate;
+    }
+
+    async _infer(textList, style, totalStep, speed = 1.05, progressCallback = null) {
+        const bsz = textList.length;
+        
+        // Process text
+        const { textIds, textMask } = this.textProcessor.call(textList);
+        
+        const textIdsFlat = new BigInt64Array(textIds.flat().map(x => BigInt(x)));
+        const textIdsShape = [bsz, textIds[0].length];
+        const textIdsTensor = new ort.Tensor('int64', textIdsFlat, textIdsShape);
+        
+        const textMaskFlat = new Float32Array(textMask.flat(2));
+        const textMaskShape = [bsz, 1, textMask[0][0].length];
+        const textMaskTensor = new ort.Tensor('float32', textMaskFlat, textMaskShape);
+        
+        // Predict duration
+        const dpOutputs = await this.dpOrt.run({
+            text_ids: textIdsTensor,
+            style_dp: style.dp,
+            text_mask: textMaskTensor
+        });
+        const duration = Array.from(dpOutputs.duration.data);
+        
+        // Apply speed factor to duration
+        for (let i = 0; i < duration.length; i++) {
+            duration[i] /= speed;
+        }
+        
+        // Encode text
+        const textEncOutputs = await this.textEncOrt.run({
+            text_ids: textIdsTensor,
+            style_ttl: style.ttl,
+            text_mask: textMaskTensor
+        });
+        const textEmb = textEncOutputs.text_emb;
+        
+        // Sample noisy latent
+        let { xt, latentMask } = this.sampleNoisyLatent(
+            duration,
+            this.sampleRate,
+            this.cfgs.ae.base_chunk_size,
+            this.cfgs.ttl.chunk_compress_factor,
+            this.cfgs.ttl.latent_dim
+        );
+        
+        const latentMaskFlat = new Float32Array(latentMask.flat(2));
+        const latentMaskShape = [bsz, 1, latentMask[0][0].length];
+        const latentMaskTensor = new ort.Tensor('float32', latentMaskFlat, latentMaskShape);
+        
+        // Prepare constant arrays
+        const totalStepArray = new Float32Array(bsz).fill(totalStep);
+        const totalStepTensor = new ort.Tensor('float32', totalStepArray, [bsz]);
+        
+        // Denoising loop
+        for (let step = 0; step < totalStep; step++) {
+            if (progressCallback) {
+                progressCallback(step + 1, totalStep);
+            }
+            
+            const currentStepArray = new Float32Array(bsz).fill(step);
+            const currentStepTensor = new ort.Tensor('float32', currentStepArray, [bsz]);
+            
+            const xtFlat = new Float32Array(xt.flat(2));
+            const xtShape = [bsz, xt[0].length, xt[0][0].length];
+            const xtTensor = new ort.Tensor('float32', xtFlat, xtShape);
+            
+            const vectorEstOutputs = await this.vectorEstOrt.run({
+                noisy_latent: xtTensor,
+                text_emb: textEmb,
+                style_ttl: style.ttl,
+                latent_mask: latentMaskTensor,
+                text_mask: textMaskTensor,
+                current_step: currentStepTensor,
+                total_step: totalStepTensor
+            });
+            
+            const denoised = Array.from(vectorEstOutputs.denoised_latent.data);
+            
+            // Reshape to 3D
+            const latentDim = xt[0].length;
+            const latentLen = xt[0][0].length;
+            xt = [];
+            let idx = 0;
+            for (let b = 0; b < bsz; b++) {
+                const batch = [];
+                for (let d = 0; d < latentDim; d++) {
+                    const row = [];
+                    for (let t = 0; t < latentLen; t++) {
+                        row.push(denoised[idx++]);
+                    }
+                    batch.push(row);
+                }
+                xt.push(batch);
+            }
+        }
+        
+        // Generate waveform
+        const finalXtFlat = new Float32Array(xt.flat(2));
+        const finalXtShape = [bsz, xt[0].length, xt[0][0].length];
+        const finalXtTensor = new ort.Tensor('float32', finalXtFlat, finalXtShape);
+        
+        const vocoderOutputs = await this.vocoderOrt.run({
+            latent: finalXtTensor
+        });
+        
+        const wav = Array.from(vocoderOutputs.wav_tts.data);
+        
+        return { wav, duration };
+    }
+
+    async call(text, style, totalStep, speed = 1.05, silenceDuration = 0.3, progressCallback = null) {
+        if (style.ttl.dims[0] !== 1) {
+            throw new Error('Single speaker text to speech only supports single style');
+        }
+        const textList = chunkText(text);
+        let wavCat = [];
+        let durCat = 0;
+        
+        for (const chunk of textList) {
+            const { wav, duration } = await this._infer([chunk], style, totalStep, speed, progressCallback);
+            
+            if (wavCat.length === 0) {
+                wavCat = wav;
+                durCat = duration[0];
+            } else {
+                const silenceLen = Math.floor(silenceDuration * this.sampleRate);
+                const silence = new Array(silenceLen).fill(0);
+                wavCat = [...wavCat, ...silence, ...wav];
+                durCat += duration[0] + silenceDuration;
+            }
+        }
+        
+        return { wav: wavCat, duration: [durCat] };
+    }
+
+    async batch(textList, style, totalStep, speed = 1.05, progressCallback = null) {
+        return await this._infer(textList, style, totalStep, speed, progressCallback);
+    }
+
+    sampleNoisyLatent(duration, sampleRate, baseChunkSize, chunkCompress, latentDim) {
+        const bsz = duration.length;
+        const maxDur = Math.max(...duration);
+        
+        const wavLenMax = Math.floor(maxDur * sampleRate);
+        const wavLengths = duration.map(d => Math.floor(d * sampleRate));
+        
+        const chunkSize = baseChunkSize * chunkCompress;
+        const latentLen = Math.floor((wavLenMax + chunkSize - 1) / chunkSize);
+        const latentDimVal = latentDim * chunkCompress;
+        
+        const xt = [];
+        for (let b = 0; b < bsz; b++) {
+            const batch = [];
+            for (let d = 0; d < latentDimVal; d++) {
+                const row = [];
+                for (let t = 0; t < latentLen; t++) {
+                    // Box-Muller transform
+                    const u1 = Math.max(0.0001, Math.random());
+                    const u2 = Math.random();
+                    const val = Math.sqrt(-2.0 * Math.log(u1)) * Math.cos(2.0 * Math.PI * u2);
+                    row.push(val);
+                }
+                batch.push(row);
+            }
+            xt.push(batch);
+        }
+        
+        const latentLengths = wavLengths.map(len => Math.floor((len + chunkSize - 1) / chunkSize));
+        const latentMask = this.lengthToMask(latentLengths, latentLen);
+        
+        // Apply mask
+        for (let b = 0; b < bsz; b++) {
+            for (let d = 0; d < latentDimVal; d++) {
+                for (let t = 0; t < latentLen; t++) {
+                    xt[b][d][t] *= latentMask[b][0][t];
+                }
+            }
+        }
+        
+        return { xt, latentMask };
+    }
+
+    lengthToMask(lengths, maxLen = null) {
+        const actualMaxLen = maxLen || Math.max(...lengths);
+        return lengths.map(len => {
+            const row = new Array(actualMaxLen).fill(0.0);
+            for (let j = 0; j < Math.min(len, actualMaxLen); j++) {
+                row[j] = 1.0;
+            }
+            return [row];
+        });
+    }
+}
+
+/**
+ * Load voice style from JSON files
+ */
+export async function loadVoiceStyle(voiceStylePaths, verbose = false) {
+    const bsz = voiceStylePaths.length;
+    
+    // Read first file to get dimensions
+    const firstResponse = await fetch(voiceStylePaths[0]);
+    const firstStyle = await firstResponse.json();
+    
+    const ttlDims = firstStyle.style_ttl.dims;
+    const dpDims = firstStyle.style_dp.dims;
+    
+    const ttlDim1 = ttlDims[1];
+    const ttlDim2 = ttlDims[2];
+    const dpDim1 = dpDims[1];
+    const dpDim2 = dpDims[2];
+    
+    // Pre-allocate arrays with full batch size
+    const ttlSize = bsz * ttlDim1 * ttlDim2;
+    const dpSize = bsz * dpDim1 * dpDim2;
+    const ttlFlat = new Float32Array(ttlSize);
+    const dpFlat = new Float32Array(dpSize);
+    
+    // Fill in the data
+    for (let i = 0; i < bsz; i++) {
+        const response = await fetch(voiceStylePaths[i]);
+        const voiceStyle = await response.json();
+        
+        // Flatten TTL data
+        const ttlData = voiceStyle.style_ttl.data.flat(Infinity);
+        const ttlOffset = i * ttlDim1 * ttlDim2;
+        ttlFlat.set(ttlData, ttlOffset);
+        
+        // Flatten DP data
+        const dpData = voiceStyle.style_dp.data.flat(Infinity);
+        const dpOffset = i * dpDim1 * dpDim2;
+        dpFlat.set(dpData, dpOffset);
+    }
+    
+    const ttlShape = [bsz, ttlDim1, ttlDim2];
+    const dpShape = [bsz, dpDim1, dpDim2];
+    
+    const ttlTensor = new ort.Tensor('float32', ttlFlat, ttlShape);
+    const dpTensor = new ort.Tensor('float32', dpFlat, dpShape);
+    
+    if (verbose) {
+        console.log(`Loaded ${bsz} voice styles`);
+    }
+    
+    return new Style(ttlTensor, dpTensor);
+}
+
+/**
+ * Load configuration from JSON
+ */
+export async function loadCfgs(onnxDir) {
+    const response = await fetch(`${onnxDir}/tts.json`);
+    const cfgs = await response.json();
+    return cfgs;
+}
+
+/**
+ * Load text processor
+ */
+export async function loadTextProcessor(onnxDir) {
+    const response = await fetch(`${onnxDir}/unicode_indexer.json`);
+    const indexer = await response.json();
+    return new UnicodeProcessor(indexer);
+}
+
+/**
+ * Load ONNX model
+ */
+export async function loadOnnx(onnxPath, options) {
+    const session = await ort.InferenceSession.create(onnxPath, options);
+    return session;
+}
+
+/**
+ * Load all TTS components
+ */
+export async function loadTextToSpeech(onnxDir, sessionOptions = {}, progressCallback = null) {
+    console.log('Using WebAssembly/WebGPU for inference');
+    
+    const cfgs = await loadCfgs(onnxDir);
+    
+    const dpPath = `${onnxDir}/duration_predictor.onnx`;
+    const textEncPath = `${onnxDir}/text_encoder.onnx`;
+    const vectorEstPath = `${onnxDir}/vector_estimator.onnx`;
+    const vocoderPath = `${onnxDir}/vocoder.onnx`;
+    
+    const modelPaths = [
+        { name: 'Duration Predictor', path: dpPath },
+        { name: 'Text Encoder', path: textEncPath },
+        { name: 'Vector Estimator', path: vectorEstPath },
+        { name: 'Vocoder', path: vocoderPath }
+    ];
+    
+    const sessions = [];
+    for (let i = 0; i < modelPaths.length; i++) {
+        if (progressCallback) {
+            progressCallback(modelPaths[i].name, i + 1, modelPaths.length);
+        }
+        const session = await loadOnnx(modelPaths[i].path, sessionOptions);
+        sessions.push(session);
+    }
+    
+    const [dpOrt, textEncOrt, vectorEstOrt, vocoderOrt] = sessions;
+    
+    const textProcessor = await loadTextProcessor(onnxDir);
+    const textToSpeech = new TextToSpeech(cfgs, textProcessor, dpOrt, textEncOrt, vectorEstOrt, vocoderOrt);
+    
+    return { textToSpeech, cfgs };
+}
+
+/**
+ * Chunk text into manageable segments
+ */
+function chunkText(text, maxLen = 300) {
+    if (typeof text !== 'string') {
+        throw new Error(`chunkText expects a string, got ${typeof text}`);
+    }
+    
+    // Split by paragraph (two or more newlines)
+    const paragraphs = text.trim().split(/\n\s*\n+/).filter(p => p.trim());
+    
+    const chunks = [];
+    
+    for (let paragraph of paragraphs) {
+        paragraph = paragraph.trim();
+        if (!paragraph) continue;
+        
+        // Split by sentence boundaries (period, question mark, exclamation mark followed by space)
+        // But exclude common abbreviations like Mr., Mrs., Dr., etc. and single capital letters like F.
+        const sentences = paragraph.split(/(?<!Mr\.|Mrs\.|Ms\.|Dr\.|Prof\.|Sr\.|Jr\.|Ph\.D\.|etc\.|e\.g\.|i\.e\.|vs\.|Inc\.|Ltd\.|Co\.|Corp\.|St\.|Ave\.|Blvd\.)(?<!\b[A-Z]\.)(?<=[.!?])\s+/);
+        
+        let currentChunk = "";
+        
+        for (let sentence of sentences) {
+            if (currentChunk.length + sentence.length + 1 <= maxLen) {
+                currentChunk += (currentChunk ? " " : "") + sentence;
+            } else {
+                if (currentChunk) {
+                    chunks.push(currentChunk.trim());
+                }
+                currentChunk = sentence;
+            }
+        }
+        
+        if (currentChunk) {
+            chunks.push(currentChunk.trim());
+        }
+    }
+    
+    return chunks;
+}
+
+/**
+ * Write WAV file to ArrayBuffer
+ */
+export function writeWavFile(audioData, sampleRate) {
+    const numChannels = 1;
+    const bitsPerSample = 16;
+    const byteRate = sampleRate * numChannels * bitsPerSample / 8;
+    const blockAlign = numChannels * bitsPerSample / 8;
+    const dataSize = audioData.length * 2;
+    
+    // Create ArrayBuffer
+    const buffer = new ArrayBuffer(44 + dataSize);
+    const view = new DataView(buffer);
+    
+    // Write WAV header
+    const writeString = (offset, string) => {
+        for (let i = 0; i < string.length; i++) {
+            view.setUint8(offset + i, string.charCodeAt(i));
+        }
+    };
+    
+    writeString(0, 'RIFF');
+    view.setUint32(4, 36 + dataSize, true);
+    writeString(8, 'WAVE');
+    writeString(12, 'fmt ');
+    view.setUint32(16, 16, true);
+    view.setUint16(20, 1, true); // PCM
+    view.setUint16(22, numChannels, true);
+    view.setUint32(24, sampleRate, true);
+    view.setUint32(28, byteRate, true);
+    view.setUint16(32, blockAlign, true);
+    view.setUint16(34, bitsPerSample, true);
+    writeString(36, 'data');
+    view.setUint32(40, dataSize, true);
+    
+    // Write audio data
+    const int16Data = new Int16Array(audioData.length);
+    for (let i = 0; i < audioData.length; i++) {
+        const clamped = Math.max(-1.0, Math.min(1.0, audioData[i]));
+        int16Data[i] = Math.floor(clamped * 32767);
+    }
+    
+    const dataView = new Uint8Array(buffer, 44);
+    dataView.set(new Uint8Array(int16Data.buffer));
+    
+    return buffer;
+}
diff --git a/web/index.html b/web/index.html
new file mode 100644
index 0000000..816d5e9
--- /dev/null
+++ b/web/index.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <title>Supertonic - Web Demo</title>
+        <link rel="stylesheet" href="/style.css">
+    </head>
+    <body>
+        <div class="container">
+            <h1>🎤 Supertonic</h1>
+            <p class="subtitle">Text-to-Speech with ONNX Runtime Web</p>
+
+            <div id="statusBox" class="status-box">
+                <div class="status-text-wrapper">
+                    <div id="statusText">ℹ️ <strong>Loading models...</strong>
+                        Please wait...</div>
+                </div>
+                <div id="backendBadge" class="backend-badge">WebAssembly</div>
+            </div>
+
+            <div class="main-content">
+                <div class="left-panel">
+                    <div class="section">
+                        <div class="ref-audio-label">
+                            <label for="voiceStyleSelect">Voice Style: </label>
+                            <span id="voiceStyleInfo"
+                                class="ref-audio-info">Loading...</span>
+                        </div>
+                        <select id="voiceStyleSelect">
+                            <option value="assets/voice_styles/M1.json">Male 1 (M1)</option>
+                            <option value="assets/voice_styles/M2.json">Male 2 (M2)</option>
+                            <option value="assets/voice_styles/F1.json">Female 1 (F1)</option>
+                            <option value="assets/voice_styles/F2.json">Female 2 (F2)</option>
+                        </select>
+                    </div>
+
+                    <div class="section">
+                        <label for="text">Text to Synthesize:</label>
+                        <textarea id="text"
+                            placeholder="Enter the text you want to convert to speech...">This morning, I took a walk in the park, and the sound of the birds and the breeze was so pleasant that I stopped for a long time just to listen.</textarea>
+                    </div>
+
+                    <div class="params-grid">
+                        <div class="section">
+                            <label for="totalStep">Total Steps (higher = better
+                                quality):</label>
+                            <input type="number" id="totalStep" value="5"
+                                min="1" max="50">
+                        </div>
+                        
+                        <div class="section">
+                            <label for="speed">Speed (0.9-1.5 recommended):</label>
+                            <input type="number" id="speed" value="1.05"
+                                min="0.5" max="2.0" step="0.05">
+                        </div>
+
+                    </div>
+
+                    <button id="generateBtn">Generate Speech</button>
+
+                    <div id="error" class="error"></div>
+                </div>
+
+                <div class="right-panel">
+                    <div id="results" class="results">
+                        <div class="results-placeholder">
+                            <div class="results-placeholder-icon">🎤</div>
+                            <p>Generated speech will appear here</p>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <script type="module" src="/main.js"></script>
+    </body>
+</html>
diff --git a/web/main.js b/web/main.js
new file mode 100644
index 0000000..13155c5
--- /dev/null
+++ b/web/main.js
@@ -0,0 +1,288 @@
+import {
+    loadTextToSpeech,
+    loadVoiceStyle,
+    writeWavFile
+} from './helper.js';
+
+// Configuration
+const DEFAULT_VOICE_STYLE_PATH = 'assets/voice_styles/M1.json';
+
+// Helper function to extract filename from path
+function getFilenameFromPath(path) {
+    return path.split('/').pop();
+}
+
+// Global state
+let textToSpeech = null;
+let cfgs = null;
+
+// Pre-computed style
+let currentStyle = null;
+let currentStylePath = DEFAULT_VOICE_STYLE_PATH;
+
+// UI Elements
+const textInput = document.getElementById('text');
+const voiceStyleSelect = document.getElementById('voiceStyleSelect');
+const voiceStyleInfo = document.getElementById('voiceStyleInfo');
+const totalStepInput = document.getElementById('totalStep');
+const speedInput = document.getElementById('speed');
+const generateBtn = document.getElementById('generateBtn');
+const statusBox = document.getElementById('statusBox');
+const statusText = document.getElementById('statusText');
+const backendBadge = document.getElementById('backendBadge');
+const resultsContainer = document.getElementById('results');
+const errorBox = document.getElementById('error');
+
+function showStatus(message, type = 'info') {
+    statusText.innerHTML = message;
+    statusBox.className = 'status-box';
+    if (type === 'success') {
+        statusBox.classList.add('success');
+    } else if (type === 'error') {
+        statusBox.classList.add('error');
+    }
+}
+
+function showError(message) {
+    errorBox.textContent = message;
+    errorBox.classList.add('active');
+}
+
+function hideError() {
+    errorBox.classList.remove('active');
+}
+
+function showBackendBadge() {
+    backendBadge.classList.add('visible');
+}
+
+// Load voice style from JSON
+async function loadStyleFromJSON(stylePath) {
+    try {
+        const style = await loadVoiceStyle([stylePath], true);
+        return style;
+    } catch (error) {
+        console.error('Error loading voice style:', error);
+        throw error;
+    }
+}
+
+// Load models on page load
+async function initializeModels() {
+    try {
+        showStatus('ℹ️ <strong>Loading configuration...</strong>');
+        
+        const basePath = 'assets/onnx';
+        
+        // Try WebGPU first, fallback to WASM
+        let executionProvider = 'wasm';
+        try {
+            const result = await loadTextToSpeech(basePath, {
+                executionProviders: ['webgpu'],
+                graphOptimizationLevel: 'all'
+            }, (modelName, current, total) => {
+                showStatus(`ℹ️ <strong>Loading ONNX models (${current}/${total}):</strong> ${modelName}...`);
+            });
+            
+            textToSpeech = result.textToSpeech;
+            cfgs = result.cfgs;
+            
+            executionProvider = 'webgpu';
+            backendBadge.textContent = 'WebGPU';
+            backendBadge.style.background = '#4caf50';
+        } catch (webgpuError) {
+            console.log('WebGPU not available, falling back to WebAssembly');
+            
+            const result = await loadTextToSpeech(basePath, {
+                executionProviders: ['wasm'],
+                graphOptimizationLevel: 'all'
+            }, (modelName, current, total) => {
+                showStatus(`ℹ️ <strong>Loading ONNX models (${current}/${total}):</strong> ${modelName}...`);
+            });
+            
+            textToSpeech = result.textToSpeech;
+            cfgs = result.cfgs;
+        }
+        
+        showStatus('ℹ️ <strong>Loading default voice style...</strong>');
+        
+        // Load default voice style
+        currentStyle = await loadStyleFromJSON(currentStylePath);
+        voiceStyleInfo.textContent = `${getFilenameFromPath(currentStylePath)} (default)`;
+        
+        showStatus(`✅ <strong>Models loaded!</strong> Using ${executionProvider.toUpperCase()}. You can now generate speech.`, 'success');
+        showBackendBadge();
+        
+        generateBtn.disabled = false;
+        
+    } catch (error) {
+        console.error('Error loading models:', error);
+        showStatus(`❌ <strong>Error loading models:</strong> ${error.message}`, 'error');
+    }
+}
+
+// Handle voice style selection
+voiceStyleSelect.addEventListener('change', async (e) => {
+    const selectedValue = e.target.value;
+    
+    if (!selectedValue) return;
+    
+    try {
+        generateBtn.disabled = true;
+        showStatus(`ℹ️ <strong>Loading voice style...</strong>`, 'info');
+        
+        currentStylePath = selectedValue;
+        currentStyle = await loadStyleFromJSON(currentStylePath);
+        voiceStyleInfo.textContent = getFilenameFromPath(currentStylePath);
+        
+        showStatus(`✅ <strong>Voice style loaded:</strong> ${getFilenameFromPath(currentStylePath)}`, 'success');
+        generateBtn.disabled = false;
+    } catch (error) {
+        showError(`Error loading voice style: ${error.message}`);
+        
+        // Restore default style
+        currentStylePath = DEFAULT_VOICE_STYLE_PATH;
+        voiceStyleSelect.value = currentStylePath;
+        try {
+            currentStyle = await loadStyleFromJSON(currentStylePath);
+            voiceStyleInfo.textContent = `${getFilenameFromPath(currentStylePath)} (default)`;
+        } catch (styleError) {
+            console.error('Error restoring default style:', styleError);
+        }
+        
+        generateBtn.disabled = false;
+    }
+});
+
+// Main synthesis function
+async function generateSpeech() {
+    const text = textInput.value.trim();
+    if (!text) {
+        showError('Please enter some text to synthesize.');
+        return;
+    }
+    
+    if (!textToSpeech || !cfgs) {
+        showError('Models are still loading. Please wait.');
+        return;
+    }
+    
+    if (!currentStyle) {
+        showError('Voice style is not ready. Please wait.');
+        return;
+    }
+    
+    const startTime = Date.now();
+    
+    try {
+        generateBtn.disabled = true;
+        hideError();
+        
+        // Clear results and show placeholder
+        resultsContainer.innerHTML = `
+            <div class="results-placeholder generating">
+                <div class="results-placeholder-icon">⏳</div>
+                <p>Generating speech...</p>
+            </div>
+        `;
+        
+        const totalStep = parseInt(totalStepInput.value);
+        const speed = parseFloat(speedInput.value);
+        
+        showStatus('ℹ️ <strong>Generating speech from text...</strong>');
+        const tic = Date.now();
+        
+        const { wav, duration } = await textToSpeech.call(
+            text, 
+            currentStyle, 
+            totalStep,
+            speed,
+            0.3,
+            (step, total) => {
+                showStatus(`ℹ️ <strong>Denoising (${step}/${total})...</strong>`);
+            }
+        );
+        
+        const toc = Date.now();
+        console.log(`Text-to-speech synthesis: ${((toc - tic) / 1000).toFixed(2)}s`);
+        
+        showStatus('ℹ️ <strong>Creating audio file...</strong>');
+        const wavLen = Math.floor(textToSpeech.sampleRate * duration[0]);
+        const wavOut = wav.slice(0, wavLen);
+        
+        // Create WAV file
+        const wavBuffer = writeWavFile(wavOut, textToSpeech.sampleRate);
+        const blob = new Blob([wavBuffer], { type: 'audio/wav' });
+        const url = URL.createObjectURL(blob);
+        
+        // Calculate total time and audio duration
+        const endTime = Date.now();
+        const totalTimeSec = ((endTime - startTime) / 1000).toFixed(2);
+        const audioDurationSec = duration[0].toFixed(2);
+        
+        // Display result with full text
+        resultsContainer.innerHTML = `
+            <div class="result-item">
+                <div class="result-text-container">
+                    <div class="result-text-label">Input Text</div>
+                    <div class="result-text">${text}</div>
+                </div>
+                <div class="result-info">
+                    <div class="info-item">
+                        <span>📊 Audio Length</span>
+                        <strong>${audioDurationSec}s</strong>
+                    </div>
+                    <div class="info-item">
+                        <span>⏱️ Generation Time</span>
+                        <strong>${totalTimeSec}s</strong>
+                    </div>
+                </div>
+                <div class="result-player">
+                    <audio controls>
+                        <source src="${url}" type="audio/wav">
+                    </audio>
+                </div>
+                <div class="result-actions">
+                    <button onclick="downloadAudio('${url}', 'synthesized_speech.wav')">
+                        <span>⬇️</span>
+                        <span>Download WAV</span>
+                    </button>
+                </div>
+            </div>
+        `;
+        
+        showStatus('✅ <strong>Speech synthesis completed successfully!</strong>', 'success');
+        
+    } catch (error) {
+        console.error('Error during synthesis:', error);
+        showStatus(`❌ <strong>Error during synthesis:</strong> ${error.message}`, 'error');
+        showError(`Error during synthesis: ${error.message}`);
+        
+        // Restore placeholder
+        resultsContainer.innerHTML = `
+            <div class="results-placeholder">
+                <div class="results-placeholder-icon">🎤</div>
+                <p>Generated speech will appear here</p>
+            </div>
+        `;
+    } finally {
+        generateBtn.disabled = false;
+    }
+}
+
+// Download handler (make it global so it can be called from onclick)
+window.downloadAudio = function(url, filename) {
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = filename;
+    a.click();
+};
+
+// Attach generate function to button
+generateBtn.addEventListener('click', generateSpeech);
+
+// Initialize on load
+window.addEventListener('load', async () => {
+    generateBtn.disabled = true;
+    await initializeModels();
+});
diff --git a/web/package.json b/web/package.json
new file mode 100644
index 0000000..80b7462
--- /dev/null
+++ b/web/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "tts-onnx-web",
+  "version": "1.0.0",
+  "description": "TTS inference using ONNX Runtime for Web Browser",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "keywords": ["tts", "onnx", "speech-synthesis", "web"],
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "fft.js": "^4.0.3",
+    "onnxruntime-web": "^1.17.0"
+  },
+  "devDependencies": {
+    "vite": "^5.0.0"
+  }
+}
diff --git a/web/style.css b/web/style.css
new file mode 100644
index 0000000..477bc99
--- /dev/null
+++ b/web/style.css
@@ -0,0 +1,453 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    min-height: 100vh;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    padding: 20px;
+}
+
+.container {
+    background: white;
+    border-radius: 20px;
+    padding: 40px;
+    max-width: 1400px;
+    width: 100%;
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
+}
+
+.main-content {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 40px;
+    margin-top: 30px;
+    align-items: start;
+}
+
+.left-panel {
+    display: flex;
+    flex-direction: column;
+}
+
+.right-panel {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+}
+
+@media (max-width: 1024px) {
+    .main-content {
+        grid-template-columns: 1fr;
+    }
+}
+
+h1 {
+    color: #333;
+    margin-bottom: 10px;
+    font-size: 2em;
+}
+
+.subtitle {
+    color: #666;
+    margin-bottom: 30px;
+    font-size: 1.1em;
+}
+
+.section {
+    margin-bottom: 25px;
+}
+
+label {
+    display: block;
+    font-weight: 600;
+    color: #333;
+    margin-bottom: 8px;
+    font-size: 0.95em;
+}
+
+input[type="file"],
+textarea,
+input[type="number"] {
+    width: 100%;
+    padding: 12px;
+    border: 2px solid #e0e0e0;
+    border-radius: 8px;
+    font-size: 1em;
+    transition: border-color 0.3s;
+}
+
+input[type="file"]:focus,
+textarea:focus,
+input[type="number"]:focus {
+    outline: none;
+    border-color: #667eea;
+}
+
+textarea {
+    resize: vertical;
+    min-height: 100px;
+    font-family: inherit;
+}
+
+.params-grid {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 15px;
+}
+
+button {
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    color: white;
+    border: none;
+    padding: 15px 30px;
+    font-size: 1.1em;
+    font-weight: 600;
+    border-radius: 8px;
+    cursor: pointer;
+    width: 100%;
+    transition: transform 0.2s, box-shadow 0.2s;
+}
+
+button:hover:not(:disabled) {
+    transform: translateY(-2px);
+    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
+}
+
+button:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+}
+
+.status-box {
+    background: #e3f2fd;
+    border-left: 4px solid #2196f3;
+    padding: 15px;
+    margin-bottom: 10px;
+    border-radius: 4px;
+    font-size: 0.9em;
+    color: #1565c0;
+    transition: all 0.3s ease;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 15px;
+    min-height: 50px;
+}
+
+.status-box.success {
+    background: #e8f5e9;
+    border-left-color: #4caf50;
+    color: #2e7d32;
+}
+
+.status-box.error {
+    background: #ffebee;
+    border-left-color: #f44336;
+    color: #c62828;
+}
+
+.status-text-wrapper {
+    flex: 1;
+    min-width: 200px;
+}
+
+.backend-badge {
+    display: inline-block;
+    visibility: hidden;
+    padding: 6px 12px;
+    background: #ff9800;
+    color: white;
+    border-radius: 12px;
+    font-size: 0.85em;
+    font-weight: 600;
+    margin-left: 10px;
+    white-space: nowrap;
+}
+
+.backend-badge.visible {
+    visibility: visible;
+}
+
+.ref-audio-info {
+    color: #4caf50;
+    font-weight: 700;
+    font-size: 0.95em;
+}
+
+.ref-audio-label {
+    margin-bottom: 8px;
+}
+
+.ref-audio-label label {
+    display: inline;
+    margin-bottom: 0;
+}
+
+
+.results {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+}
+
+.result-item {
+    background: white;
+    border-radius: 16px;
+    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
+    overflow: hidden;
+    transition: box-shadow 0.3s ease;
+    display: flex;
+    flex-direction: column;
+    flex: 1;
+}
+
+.result-item:hover {
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
+}
+
+.result-item h3 {
+    color: #667eea;
+    margin-bottom: 15px;
+    font-size: 1.2em;
+}
+
+.result-text-container {
+    padding: 20px;
+    background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
+    border-bottom: 1px solid #e8ecf5;
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+}
+
+.result-text-label {
+    font-size: 0.75em;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+    color: #667eea;
+    font-weight: 600;
+    margin-bottom: 8px;
+}
+
+.result-text {
+    color: #333;
+    line-height: 1.7;
+    font-size: 0.95em;
+    word-wrap: break-word;
+    white-space: pre-wrap;
+    overflow-y: auto;
+    padding-right: 8px;
+    flex: 1;
+}
+
+.result-text::-webkit-scrollbar {
+    width: 6px;
+}
+
+.result-text::-webkit-scrollbar-track {
+    background: #f0f0f0;
+    border-radius: 3px;
+}
+
+.result-text::-webkit-scrollbar-thumb {
+    background: #c0c0c0;
+    border-radius: 3px;
+}
+
+.result-text::-webkit-scrollbar-thumb:hover {
+    background: #a0a0a0;
+}
+
+.result-info {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 0;
+    background: #fafbff;
+}
+
+.info-item {
+    padding: 16px 20px;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    font-size: 0.9em;
+    color: #666;
+    border-bottom: 1px solid #e8ecf5;
+}
+
+.info-item:nth-child(1) {
+    border-right: 1px solid #e8ecf5;
+}
+
+.info-item strong {
+    color: #333;
+    font-size: 1.1em;
+    font-weight: 600;
+    margin-left: auto;
+}
+
+.result-player {
+    padding: 20px;
+    background: white;
+}
+
+.result-item audio {
+    width: 100%;
+    height: 48px;
+    outline: none;
+}
+
+.result-item audio:focus {
+    outline: 2px solid #667eea;
+    outline-offset: 2px;
+    border-radius: 4px;
+}
+
+.result-actions {
+    padding: 16px 20px 20px;
+    background: white;
+}
+
+.result-item button {
+    width: 100%;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    color: white;
+    border: none;
+    padding: 12px 24px;
+    font-size: 0.95em;
+    font-weight: 600;
+    border-radius: 8px;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 8px;
+}
+
+.result-item button:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
+}
+
+.result-item button:active {
+    transform: translateY(0);
+}
+
+@media (max-width: 640px) {
+    .result-info {
+        grid-template-columns: 1fr;
+    }
+    
+    .info-item:nth-child(1) {
+        border-right: none;
+    }
+}
+
+audio {
+    width: 100%;
+    margin-top: 10px;
+}
+
+.error {
+    background: #fee;
+    color: #c00;
+    padding: 15px;
+    border-radius: 8px;
+    margin-top: 20px;
+    display: none;
+}
+
+.error.active {
+    display: block;
+}
+
+.warning-box {
+    background: #fff3cd;
+    color: #856404;
+    padding: 12px 15px;
+    border-radius: 8px;
+    margin-top: 10px;
+    border-left: 4px solid #ffc107;
+    font-size: 0.9em;
+    display: none;
+    line-height: 1.5;
+}
+
+.warning-box.active {
+    display: block;
+}
+
+.warning-box::before {
+    content: "⚠️ ";
+    margin-right: 5px;
+}
+
+.results-placeholder {
+    background: white;
+    border-radius: 16px;
+    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
+    padding: 60px 40px;
+    text-align: center;
+    color: #999;
+    transition: all 0.3s ease;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    flex: 1;
+    min-height: 400px;
+}
+
+.results-placeholder:hover {
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
+}
+
+.results-placeholder-icon {
+    font-size: 4em;
+    margin-bottom: 20px;
+    opacity: 0.6;
+    animation: float 3s ease-in-out infinite;
+}
+
+.results-placeholder.generating .results-placeholder-icon {
+    animation: spin 2s linear infinite;
+}
+
+@keyframes float {
+    0%, 100% {
+        transform: translateY(0px);
+    }
+    50% {
+        transform: translateY(-10px);
+    }
+}
+
+@keyframes spin {
+    0% {
+        transform: rotate(0deg);
+    }
+    100% {
+        transform: rotate(360deg);
+    }
+}
+
+.results-placeholder p {
+    font-size: 1.05em;
+    color: #888;
+    font-weight: 500;
+    margin: 0;
+}
+
+.hidden {
+    display: none;
+}
diff --git a/web/vite.config.js b/web/vite.config.js
new file mode 100644
index 0000000..dd53065
--- /dev/null
+++ b/web/vite.config.js
@@ -0,0 +1,14 @@
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+  server: {
+    port: 3000,
+    open: true
+  },
+  build: {
+    target: 'esnext'
+  },
+  optimizeDeps: {
+    exclude: ['onnxruntime-web']
+  }
+});