Three steps to an audiobook
Upload EPUB
Drop your .epub file. AI extracts chapters, detects characters and dialogue automatically.
Assign Voices
Pick from 550+ AI voices. Assign different voices to narrator and each character.
Download Audio
Generate narration chapter by chapter. Download as MP3 — full book or individual chapters.
What you get
What is EPUB?
EPUB (Electronic Publication) is an open ebook standard maintained by the W3C. It's the most widely supported ebook format in the world — used by Apple Books, Google Play Books, Kobo, Nook, and most ebook readers outside the Kindle ecosystem.
Under the hood, an EPUB file is a ZIP archive containing HTML chapters, CSS stylesheets, images, and an XML manifest describing the book's structure. This structured format makes it ideal for text-to-speech conversion — the chapter boundaries, paragraphs, and dialogue are already clearly defined in the markup.
Because EPUB preserves the full text and structure of a book, converting it to audio produces better results than converting a PDF (which often has broken paragraphs from page layout) or plain text (which has no chapter structure).
Why convert EPUB to audio?
Not every book has an audiobook edition. And professional audiobook production costs $2,000–$5,000 per finished hour. AI narration lets you turn any EPUB into a listenable book in minutes, not months.
- Listen while commuting. Turn dead time into reading time. Listen to your ebook library in the car, on the train, or walking.
- Accessibility. Make any book accessible to people with visual impairments, dyslexia, or reading fatigue.
- Learn faster. Studies show that combining reading with listening improves comprehension and retention.
- Multitask. Listen while cooking, exercising, or doing housework. Your ebook library becomes a podcast library.
- Language learning. Hear books in 57 languages with native-sounding AI voices. Follow along with the text.
- No audiobook available. Most books never get a professionally narrated audiobook. AI narration fills the gap.
Voices & Languages
Notevibes offers 550+ AI voices across 57 languages. Voices are powered by Google, Amazon, Microsoft, and OpenAI neural TTS engines — the same technology behind Alexa, Google Assistant, and Siri.
550+ voices
Male, female, and child voices. Conversational, narrative, and professional tones.
57 languages
English, Spanish, French, German, Japanese, Chinese, Arabic, Hindi, and 49 more.
Multi-voice books
Assign different voices to narrator and each character. AI detects dialogue automatically.
Reading vs Listening: when to convert
| Scenario | Read EPUB | Listen to Audio |
|---|---|---|
| Commuting or driving | Not possible | Perfect |
| Deep study or research | Better — can highlight | Good — for review |
| Before bed | Good — but screen light | Perfect — eyes closed |
| Exercising or walking | Impractical | Perfect |
| Visual impairment | Limited accessibility | Full accessibility |
| Learning a language | Good for reading | Better — hear pronunciation |
| Cooking or chores | Hands busy | Perfect — hands free |
| Detailed reference books | Better — can scan | Less practical |
The best approach is both. Keep the EPUB for when you can read, convert to audio for when you can't. Notevibes lets you do both from the same file.
Security & Privacy
Encrypted transfer
All file uploads use HTTPS encryption. Your EPUB is protected in transit.
Auto-deletion
Source files are processed and deleted. Only your generated audio is stored in your account.
Your content, your rights
Generated audiobooks are yours. Full commercial usage rights included on all plans.
Questions?
How do I convert EPUB to audio?
Upload your EPUB file at notevibes.com/audiobook-narration. The AI extracts chapters and text, detects characters and dialogue, and lets you assign voices. Click generate, and your audiobook is ready to download as MP3.
Is EPUB to audio conversion free?
You can try the converter free with up to 1,000 characters. Full audiobook conversion is available on paid plans starting at $19/month with 100,000 characters included.
How long does conversion take?
A typical novel (60,000–80,000 words) takes 10–20 minutes to generate. Short stories and chapters are ready in under a minute. You can preview individual chapters before generating the full book.
Can the AI detect different characters?
Yes. Notevibes AI scans your EPUB for dialogue tags and character names. It identifies who is speaking and lets you assign a unique voice to each character. You can review and adjust assignments before generating.
What audio quality do I get?
Audio is generated at high-quality MP3 (48kHz). Voices are powered by neural TTS engines from Google, Amazon, Microsoft, and OpenAI — the same technology behind modern voice assistants.
Can I convert DRM-protected EPUB files?
No. The converter only works with DRM-free EPUB files. If your ebook has DRM, check if the publisher offers a DRM-free download. See our EPUB download guide for help.
What languages are supported?
Notevibes supports 57 languages including English, Spanish, French, German, Portuguese, Japanese, Chinese, Korean, Arabic, Hindi, Russian, and many more. Each language has multiple voice options.
Can I sell the audiobook I create?
Yes. All paid plans include full commercial usage rights. You can distribute, sell, or publish the audiobooks you create with Notevibes on platforms like Audible, Google Play, or your own website.
What if I have a PDF instead of EPUB?
Notevibes also supports PDF to audio conversion. Upload your PDF at notevibes.com/pdf-to-audio. For best results, EPUB is preferred because it preserves chapter structure and clean text.
Your ebook, now an audiobook
Upload your EPUB and hear it come alive. AI detects characters, assigns voices, and generates narration. Your book, 550+ voices, minutes to audiobook.
Create Your Audiobook550+ voices · 57 languages · AI character detection · Full commercial rights