Convert EPUB books to M4B audiobooks with AI-powered TTS (Edge TTS, Kokoro, Piper)
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Updated
Feb 5, 2026 - Python
Convert EPUB books to M4B audiobooks with AI-powered TTS (Edge TTS, Kokoro, Piper)
Book-to-audiobook API — turn any EPUB/PDF/TXT into an audiobook in 600+ languages, with optional translation. Pay per character with Bitcoin Lightning. No signup.
Input an EPUB file and get an audiobook out. Local Text to Speech with Kokoro 82M — no cloud, no API keys. M4B with chapter markers. Mac / Linux / Windows.
Self-hosted EPUB → M4B audiobook converter that narrates locally with Chatterbox TTS — no cloud, no per-word billing. Review chapters before hours of narration, audition ten voices on your own book, then listen and read along in the browser. Web UI + API + PostgreSQL in Docker; the narrator runs natively on an Apple Silicon Mac.
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