Neural Voices does not collect, store or send any personal data. There is no account, no tracking and no analytics.

The text you listen to is turned into speech inside your browser and never leaves your computer. Its language is recognised by the browser's built-in detector, which also runs on your computer.

Your settings and downloaded voices are kept in your browser's storage for the add-on. You can delete the voices in Settings, or remove everything by removing the add-on.

The add-on uses the internet only for:
- downloading a voice the first time you use it, from Piper's voice collection on Hugging Face (huggingface.co/rhasspy/piper-voices);
- playing a short voice sample from rhasspy.github.io when you press "Try" in Settings;
- loading a PDF you ask it to read, from the site where that PDF is.
These requests contain only the file being fetched, never your text or settings.