Fact · Dictation in your apps
The specification defines a downloadable status for on-device recognition that the browser supports but that is not yet installed.
Checked against its source on October 17, 2026
In the source's own words
“Indicates that on-device speech recognition for the specified language(s) is supported by the user agent but not yet installed.”
Web Speech API (W3C Community Group draft), W3C Web Speech API Community Group, 2026, SpeechRecognitionAvailabilityStatus enum.
Open the original- What it measures
- The availability status values are unavailable, downloadable, downloading and available.
- What it does not show
- A page can check this status with the available method and ask the user to install the language with install. The spec notes that the browser may prompt the user before a download.