Information Security Stack Exchange is a question and answer site for information security professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Does the web speech API send the audio to a third-party web service in order to do the speech-to-text conversion, or is everything built into the browser?

I'm trying to work out how secure this API is, for example as implemented in Chrome 25.

share|improve this question
up vote 3 down vote accepted

The speech input API specification doesn't mention how it should be implemented. But in the requirements section there is a bullet point about encrypting communications with remote speech servers[1], it's a not a requirement for now. As for Chrome, it seems to be using a remote speech to text server using a POST over https according to this article[2], note this it's about Chrome 11 and it might have changed in the recent release.

share|improve this answer
That's great, thanks. – Andrew Feb 22 '13 at 12:14

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.