Fact · Dictation in your apps
When a page sets processLocally to true, the specification requires that recognition run on the user's device.
Checked against its source on October 17, 2026
In the source's own words
“This attribute, when set to true, indicates a requirement that the speech recognition process MUST be performed locally on the user’s device.”
Web Speech API (W3C Community Group draft), W3C Web Speech API Community Group, 2026, processLocally attribute.
Open the original- What it measures
- The attribute definition in the Web Speech API draft, dated 15 October 2026.
- What it does not show
- This is a requirement on the browser. If the browser cannot do it on the device, it has no way to satisfy the setting, so the page must handle that case.