Offline & on-device recognition
Privacy on a teleprompter comes down to one question: where do your script and your voice actually go? With letter maps, the answer is your own device.
Where your script lives
- Scripts and settings are saved in your browser's localStorage only.
- Nothing is sent to or stored on a server — there's no account and no database.
- Clearing your browser's site data deletes them; switching devices won't carry them over.
Where your voice is processed
- In auto-scroll mode, no microphone is used at all.
- In standard voice mode, microphone audio is sent to your browser's speech service (e.g. Google) for transcription.
- On Chrome 139+ with on-device recognition enabled, speech runs locally and microphone audio never leaves your machine.
Using on-device recognition
Turn it on in settings on a supported browser. The first time you use a language, Chrome downloads a model once; after that, voice-following works locally — even offline — with audio kept on the device. It's the most private way to use voice mode.
Frequently asked questions
- Does my script get uploaded anywhere?
- No. Your script stays in your browser's localStorage — there's no server copy and no account.
- Is my microphone audio sent to the cloud?
- In standard voice mode it's sent to your browser's speech service for transcription. With on-device recognition on Chrome 139+, audio stays on your machine.
- Can I use voice-following completely offline?
- Yes, on Chrome 139+ with on-device recognition enabled and the language model already downloaded.
Related: Browser support, Features, Pricing