ResponsiveVoice language voices
日本語テキスト読み上げ
ResponsiveVoice helps add Japanese text to speech to websites, apps, learning content and accessibility experiences.
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Available voices
Japanese voices for websites and apps
Use a friendly ResponsiveVoice voice name such as Japanese Female, or select by BCP-47 language code with { lang: 'ja-JP' }. The browser SDK uses native speech where it fits and falls back to ResponsiveVoice server audio when a closer voice is needed.
| Voice name | Language code | How to select it |
|---|---|---|
| Japanese Female | ja-JP | Use by exact name, pattern, or language query. |
| Japanese Male | ja-JP | Use by exact name, pattern, or language query. |
One-line browser setup
Add Japanese speech with JavaScript
<script src="https://cdn.responsivevoice.org/sdk/latest/responsivevoice.js"></script>
<script>
responsiveVoice.init({ apiKey: 'YOUR_API_KEY' });
responsiveVoice.speak("ResponsiveVoiceでウェブサイトやアプリに日本語の音声読み上げを追加できます。", "Japanese Female");
</script>For a first demo you can initialize without an API key and use the device voice. Register and verify your website domain to unlock the full voice catalog. For backend audio generation, use the REST API with your API key and secret.
The listening experience
Give Japanese readers a page they can hear
The ResponsiveVoice web player can narrate article content with paragraph-level highlighting, click-to-jump reading, speed controls, and a sticky mini-player after the controls scroll away. Set the player voice to Japanese Female for a page-level Japanese listening experience.
- Paragraph highlighting
- Voice override per page
- 0.5x to 3x speed cycle
- Skip non-readable elements
Use cases
Where Japanese text to speech helps
Accessibility
Let visitors listen to page content, instructions and support flows when reading is difficult or inconvenient.
Learning
Support language learning, pronunciation practice and e-learning narration with a voice selected for this page.
Apps and product UX
Speak confirmations, alerts, onboarding steps and generated content from the browser or your backend.
FAQ
Japanese text to speech questions
Which Japanese voice should I use?
Start with Japanese Female. If your app needs another tone or gender, test the other listed ResponsiveVoice voices and choose the one that best matches your audience.
Can I use Japanese text to speech in a browser?
Yes. Use the ResponsiveVoice browser library from npm or the CDN. The browser can use native speech and ResponsiveVoice fallback audio depending on the selected voice and platform.
Can I generate Japanese audio on a server?
Yes. Use the ResponsiveVoice REST API or API client with an API key and API secret. Keep the secret server-side only.
