Fact · Dictation in your apps
By default, speech recognition on a web page sends your audio to a server-based recognition service, so it does not work offline.
Checked against its source on October 16, 2026
In the source's own words
“By default, using speech recognition on a web page involves a server-based recognition engine. Your audio is sent to a web service for recognition processing, so it won't work offline.”
Using the Web Speech API, MDN contributors, MDN Web Docs (Mozilla), 2026, Speech recognition section.
Open the original- What it measures
- The guide goes on to explain that a page can ask for on-device recognition, which needs a one-time language pack download.
- What it does not show
- Browser support for on-device recognition differs between browsers and versions.
Source
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