This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2018.
The default read-only property of the SpeechSynthesisVoice interface returns a boolean value indicating whether the voice is the default voice for the current app (true), or not (false.)
Note: For some devices, it might be the default voice for the voice's language. The spec is not very clear on which it should be, so some implementations may differ.
A boolean value.
for (const voice of voices) {
const option = document.createElement("option");
option.textContent = `${voice.name} (${voice.lang})`;
if (voice.default) {
option.textContent += " — DEFAULT";
}
option.setAttribute("data-lang", voice.lang);
option.setAttribute("data-name", voice.name);
voiceSelect.appendChild(option);
}
| Specification |
|---|
| Web Speech API> # dom-speechsynthesisvoice-default> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
default |
33 | 14 | 49 | 21 | 7 | 33 | 62 | No | 7 | 3.0 | No | 7 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisVoice/default