Translator

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The Translator interface of the Translator and Language Detector APIs contains all the associated translation functionality, including checking AI model availability, creating a new Translator instance, using it to create a translation, and more.

Instance properties

inputQuota Read only

The input quota available to the browser for generating translations.

sourceLanguage Read only

The expected language of the input text to be translated.

targetLanguage Read only

The language that the input text will be translated into.

Static methods

availability()

Returns an enumerated value that indicates the availability of the AI model for the given Translator configuration.

create()

Creates a new Translator instance from which to generate translations.

Instance methods

destroy()

Releases the resources assigned to the Translator instance it is called on and stops any further activity on it.

measureInputUsage()

Reports how much input quota would be used by a translation operation for a given text input.

translate()

Returns a string containing a translation of the input string.

translateStreaming()

Generates a translation of the input string as a ReadableStream.

Examples

See Using the Translator and Language Detector APIs for a complete example.

Creating a Translator instance

js
const translator = await Translator.create({
  sourceLanguage: "en",
  targetLanguage: "ja",
});

Generating a translation

js
const translation = await translator.translate(myTextString);
console.log(translation);

Generating a translation stream

js
const stream = translator.translateStreaming(myTextString);
let translation = "";

for await (const chunk of stream) {
  translation += chunk;
}

console.log("Stream complete");
console.log(translation);

Specifications

Specification
Translator and Language Detector APIs
# translator

Browser compatibility

desktop mobile server
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
Translator
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
availability() static method
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
create() static method
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
destroy() instance method
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
inputQuota property
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
measureInputUsage() instance method
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
sourceLanguage property
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
targetLanguage property
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
translate() instance method
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support
translateStreaming() instance method
Experimental
Chrome – Full support
Chrome 138 (Release date: 2025-06-24)
footnote
footnote Availability may be subject to geographical restrictions.
Edge – No support
Edge
footnote No support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 122 (Release date: 2025-09-11)
footnote
footnote Availability may be subject to geographical restrictions.
Safari – No support
Safari
footnote No support
Chrome Android – No support
Chrome Android
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support
Deno – No support
Deno
footnote No support
Node.js – No support
Node.js
footnote No support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.

See also