Fact · Dictation in your apps
Chrome's 139 release notes say the Web Speech API gained on-device speech recognition, so a website can make sure neither audio nor transcribed speech is sent to a third-party service.
Checked against its source on October 17, 2026
In the source's own words
“This feature adds on-device speech recognition support to the Web Speech API, allowing websites to ensure that neither audio nor transcribed speech are sent to a third-party service for processing.”
Chrome 139 release notes, Google Chrome for Developers, 2025, On-device AI section.
Open the original- What it measures
- Chrome's release notes describe the feature as a way for a website to choose on-device recognition. The website, not the user, makes the choice in code.
- What it does not show
- The note describes the feature, not whether a given language is installed on a given computer. Language packs are a separate requirement.
Source
Cited on
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