How are audiobook chapters automatically determined?

Blank lines in the text input are automatically recognized as new chapters.

Which voice features and settings can I change?

You can select a voice and adjust the speed, pitch, and volume percentage.

Audiobook TTS – Free Text to Speech

📝 Text (blank line = new chapter)

74 words · ~0.5 min (at 1x speed) · 6 chapters

🗣️ Voice

Speed: 1x

Pitch: 1.0

Volume: 100%

🎧 MP3 download voice (server)

📚 Chapters (6)

💡 How it works: In-browser playback uses your browser's own voice engine (Chrome/Edge work best) — handy for a quick preview, but it stops if the tab closes or the phone locks. The "🎧 MP3" button next to each chapter instead renders that chapter on the server with a real neural voice (edge-tts, with an offline Piper fallback) and downloads an actual MP3 file — no need to keep the tab open, and it works on mobile too. The older "Save" button still captures browser audio via tab audio sharing (.webm/opus or .m4a) if you prefer that route. Your chapter position is saved automatically. Everything is free.

Auto-deleted in 7 days

256-bit SSL

Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Add topic / document

Type your topic or upload PDF/text source.

Pick mode / difficulty

Quiz type, count, difficulty or study mode.

Generate

AI structures the study material.

Solve / download

Solve inline or export to Anki/JSON/PDF.

Frequently asked questions

You can change the speed setting between 0.5 and 2x and adjust the pitch.

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