Contact emails
[email protected]

Explainer
https://github.com/WebAudio/web-speech-api/blob/main/explainers/unspoken-punctuation.md


Specification
https://webaudio.github.io/web-speech-api


Summary
Adds the unspokenPunctuation boolean attribute to the SpeechRecognition 
interface of the Web Speech API. When enabled (true), this attribute directs 
the speech recognition engine to automatically infer and insert punctuation 
marks (such as periods, commas, and question marks) based on the user's natural 
pauses, grammatical structure, and prosody, without requiring explicit spoken 
punctuation commands.


Blink component
Blink>Speech


Web Feature ID
speech-recognition


Motivation
Currently, developers building voice-enabled web applications—such as casual 
dictation tools, automated transcription services, or conversational 
assistants—receive raw, unpunctuated text streams from the Web Speech API. To 
make this text readable and polished, developers are often forced to implement 
and maintain complex downstream NLP models to infer basic formatting. 
Additionally, from an end-user perspective, having to explicitly dictate 
punctuation (eg, stopping to say "comma" or "period") disrupts the natural flow 
of continuous speech and significantly increases cognitive load. Introducing 
the unspokenPunctuation attribute solves this by moving automatic, 
prosody-aware punctuation directly into the browser's speech recognition 
engine. This provides an intuitive, conversational voice typing experience for 
users out-of-the-box, while dramatically lowering the barrier to entry for 
developers building voice-driven web apps.


Initial public proposal
No information provided


TAG review
No information provided


TAG review status
Not applicable


Goals for experimentation
None


Risks




Interoperability and Compatibility
No information provided

Gecko: Positive 
(https://github.com/WebAudio/web-speech-api/issues/187#issuecomment-4479796822)

WebKit: No signal

Web developers: No signals

Other signals:


Ergonomics
N/A


Activation
N/A


Security
N/A


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?
N/A, Not supported on Android



Debuggability
None required.


Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, 
ChromeOS, Android, and Android WebView)?
No
On-device Web Speech is only supported on Mac, Windows, and Linux.


Is this feature fully tested by web-platform-tests?
Yes



Flag name on about://flags
No information provided


Finch feature name
WebSpeechUnspokenPunctuation


Rollout plan
Will ship enabled for all users


Requires code in //chrome?
True


Tracking bug
https://bugs.chromium.org/b/514764702


Measurement
N/A


Adoption expectation
Feature is used by specific partner (Google Meet) to provide functionality 
within 12 months of launch in Chrome.


Estimated milestones


Shipping on desktop 151

DevTrial on desktop 150




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, changing to naming or structure of the API in a 
non-backward-compatible way).
https://github.com/WebAudio/web-speech-api/pull/188/changes#diff-5e793325cd2bfc452e268a4aa2f02b4024dd9584bd1db3c2595f61f1ecf7b985


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/4785284026859520?gate=4835184634626048


This intent message was generated by Chrome Platform Status.

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