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KoKoFish is a local, offline-capable Audiobook Studio for Windows. Convert text, ebooks, and documents into spoken audio using multiple AI voices, clone your own voice, transcribe audio back to text, translate content into other languages, and use AI writing tools to polish your text before it ever hits the speaker.
Everything runs on your machine. No cloud. No API keys. No subscriptions.
| Section | Description |
|---|---|
| Getting Started | Installation, first run, what to expect |
| Speech Lab | Read files aloud — main TTS interface |
| Voice Lab | Clone and manage voices (Fish-Speech) |
| Text Lab | Transcribe audio to text using Whisper |
| File Lab | Convert documents and audio formats |
| Listen Lab | Transcribe, translate, and re-read audio |
| Prompt Lab | Chat directly with your local AI model |
| Text Editor | In-depth editing with AI tone, grammar, translate, and tag tools |
| Assisted Flow | AI preprocessing pipeline — grammar → translate → enhance |
| Translation Guide | How translation works, and how Kokoro and Fish-Speech differ |
| TTS Engines & Hardware | Engine comparison and recommended hardware |
| LLM Models | Choosing the right AI writing model |
| Settings | Full settings reference |
- Read any document aloud — .txt, .pdf, .docx, .epub
- 54+ preset voices across 10 languages (Kokoro engine)
- Voice cloning — record or upload a clip and create a reusable voice profile (Fish-Speech)
- Blend two voices together at any ratio (Kokoro)
- Transcribe audio to text using Whisper (7 model sizes)
- Translate text or audio into 12+ languages — locally, with no API
- Re-read translated audio — transcribe foreign audio, translate it, speak it in your target language
- AI text tools — grammar check, tone rewriting, TTS enhancement, tag generation, translation
- Convert audiobook files — combine chapters, export M4B, MP3, WAV, FLAC
- Chat with a local AI — Prompt Lab with multiple personality presets
| Format | Read Aloud | Transcribe | Convert |
|---|---|---|---|
| .txt | ✅ | — | ✅ |
| ✅ | — | ✅ | |
| .docx | ✅ | — | ✅ |
| .epub | ✅ | — | ✅ |
| .wav | — | ✅ | ✅ |
| .mp3 | — | ✅ | ✅ |
| .m4a / .m4b | — | ✅ | ✅ |
| .flac | — | ✅ | ✅ |
| .ogg | — | ✅ | — |