Everything you need for accessible audio
NaturalTTS is built for education teams — clean enough for a single educator, powerful enough for a whole institution.
Natural-sounding voices
Six expressive voices powered by OpenAI TTS — warm, professional, and clear. Students and teachers prefer audio that sounds human, not robotic.
20 languages
English, Spanish, French, German, Italian, Portuguese, Polish, Dutch, Japanese, Chinese, Korean, Arabic, Hindi, Turkish, Russian, Swedish, Danish, Finnish, Norwegian, and Ukrainian.
PDF & DOCX upload
Upload lecture notes, study guides, or research papers. NaturalTTS extracts the text automatically and converts it to audio in seconds.
MP3 export
Download every conversion as a standard MP3 file. Works on any device, LMS, or podcast app — no proprietary format lock-in.
Speed control
Adjust playback speed from 0.25× to 2× at generation time. Useful for language learners, accessibility needs, or dense technical content.
Shared workspace
EDU Pilot and Team plans include a shared workspace where the whole team can convert, save history, and collaborate on a single account.
Admin analytics
See characters used, conversion count, usage per member, and top languages — all in one dashboard. Available on EDU Pilot and Team plans.
Quota & plan enforcement
Every generation is checked server-side against your plan's limits. No surprise overages — when quota runs out, you're prompted to upgrade.
Supported input formats
- Plain text (paste)
- PDF documents
- DOCX / Word files
Scanned PDFs (image-only) are not supported — the file must contain selectable text. Encrypted or password-protected files are rejected with a clear error message.