Your PDF.
Every character cast.
Fully narrated.
Upload the print-ready PDF you already have. AI extracts the text, splits chapters from your bookmarks, detects every speaking character, and narrates the whole book — dialogue in character voices, narration held steady.
Free. No credit card required.
[warm] The rain hammered against the window. [short pause] She knew, [reflective] even before opening the letter, that everything was about to change.
How it works
Four steps, free to start. The print-ready PDF sitting on your desktop already is the audiobook — it just needs a voice.
Drop the file. AI extracts the text with layout-aware parsing, reads your PDF bookmarks or outline to split chapters, and falls back to heading detection if there are none. Scanned pages run through OCR automatically.
AI scans the text for dialogue tags — “she said,” “he whispered” — identifies every speaking character, and assigns a distinct voice from 550+. Review the cast, preview, and swap before anything generates.
Per-paragraph scene direction shapes the atmosphere. Inline emotion tags like [whisper] and [urgent] drop at the exact line where delivery shifts. Dialogue and narration each get the right treatment.
whisperWait. breathlessThis can't be right.
Chapters render in parallel — a novel-length PDF finishes in 10–20 minutes. Export per-chapter MP3s or a merged file at ACX-spec 192 kbps. Publish on Spotify, Apple Books, Google Play, Kobo — anywhere that accepts AI narration.
Built for real PDFs
Print-ready exports, bookmarked manuscripts, even scanned editions — the converter is built around the files authors actually have on their desktop.
Already published on Amazon KDP? The print-ready PDF you uploaded for the paperback is the same file Notevibes turns into an audiobook. Same book, new revenue stream — without re-keying a single word.
Export your PDF with bookmarks — the outline panel in Acrobat, or “create bookmarks from headings” in Word. The AI uses them to split the book into chapters automatically. No bookmarks? Heading detection takes over.
Image-only scans run through OCR automatically before narration, so an old scanned edition works as well as a fresh export. Uploads are encrypted, source files are deleted after processing, and your PDFs are never used to train AI models.
The economics
A professional narrator charges $2,000–$5,000 per finished hour. Most indie books never recoup that. AI narration changes the math.
No studio. No voice actors. No re-keying the manuscript. Upload the PDF, approve the cast, and generate — chapter by chapter or the whole book. Building voice AI since 2018.
Frequently asked questions
The full picture
Traditional audiobook production is expensive. A professional narrator charges $2,000–$5,000 per finished hour, so a 10-hour audiobook can cost $20,000–$50,000 before distribution — plus studio rental, editing, mastering, and weeks of scheduling. Most indie authors never recoup that investment, which is why most books never get an audiobook at all.
AI changes the math. You already wrote and laid out the book; the print-ready PDF on your desktop is the audiobook — it just needs a voice. Upload it to the Notevibes PDF to audiobook converter, approve the cast, and generate a complete audiobook in minutes — free to start, with full commercial rights and ACX-spec files ready for every distributor that accepts AI narration.
Great audiobooks don't use one voice for everything. When you upload a PDF, the AI scans for dialogue tags like “she said” and “he whispered,” identifies characters by name, maps who speaks each line, and suggests a voice for each one. You review the cast list, swap voices if you want, and hit generate. Every line of dialogue plays in the right voice; narration stays consistent across the whole book.
Related: AI Audiobook Generator · All 550+ voices · Narrator voices
The converter reads PDF bookmarks — the outline panel in Acrobat — and uses them as chapter markers, with heading detection as the fallback. Scanned image-only PDFs run through OCR automatically. Export per-chapter MP3s (Chapter_01.mp3, Chapter_02.mp3, …) or one merged file at 192 kbps CBR, the ACX technical spec, with volume normalization applied automatically.
Related: PDF to audio · Read PDF aloud · PDF to MP3
AI-narrated titles are accepted with disclosure on Spotify (via Findaway Voices), Apple Books, Google Play Books, Kobo Writing Life, and Author's Republic — or sell direct on your own site with 100% revenue retention. Audible itself takes AI narration only through Amazon's Virtual Voice program for KDP ebooks, since ACX requires human narration. Every paid plan includes full commercial rights: no royalty splits, no per-sale fees.
Related: Audiobook cost calculator · How to create an audiobook · How to market your audiobook
PDF is the workhorse, but the same pipeline accepts EPUB, Kindle (.mobi/.azw3), Word (.docx), and plain text. EPUB and .docx tend to give the cleanest chapter splits because their structure maps directly to chapter markers — if you have both a PDF and an EPUB of the same book, upload the EPUB.
Related: EPUB to audio · Word to audiobook · Kindle to audio