TextEncoderStream

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2022.

See full compatibility

Note: This feature is available in Web Workers.

The TextEncoderStream interface of the Encoding API converts a stream of strings into bytes in the UTF-8 encoding. It is the streaming equivalent of TextEncoder. It implements the same shape as a TransformStream, allowing it to be used in ReadableStream.pipeThrough() and similar methods.

Constructor

TextEncoderStream(): Creates a new TextEncoderStream object.

Instance properties

TextEncoderStream.encoding Read only: Always returns "utf-8".
TextEncoderStream.readable Read only: Returns the ReadableStream instance controlled by this object.
TextEncoderStream.writable Read only: Returns the WritableStream instance controlled by this object.

Examples

Examples of streaming structured data and HTML

Specifications

Specification
Encoding # interface-textencoderstream

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	Bun	Deno	Node.js
`TextEncoderStream`	Chrome – Full support Chrome 71 (Release date: 2018-12-04) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 105 (Release date: 2022-09-20) footnote Full support	Opera – Full support Opera 58 (Release date: 2019-01-23) footnote Full support	Safari – Full support Safari 14.1 (Release date: 2021-04-26) footnote Full support	Chrome Android – Full support Chrome Android 71 (Release date: 2018-12-04) footnote Full support	Firefox for Android – Full support Firefox for Android 105 (Release date: 2022-09-20) footnote Full support	Opera Android – Full support Opera Android 50 (Release date: 2019-02-18) footnote Full support	Safari on iOS – Full support Safari on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Samsung Internet – Full support Samsung Internet 10 (Release date: 2019-08-22) footnote Full support	WebView Android – Full support WebView Android 71 (Release date: 2018-12-04) footnote Full support	WebView on iOS – Full support WebView on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Bun – Full support Bun 1.1.23 (Release date: 2024-08-14) footnote Full support	Deno – Full support Deno 1.11 (Release date: 2021-06-08) footnote Full support	Node.js – Partial support Node.js 16.6 – 17.5 (Release date: 2021-07-29) footnote Partial support footnote Available as a part of the `stream/web` module. Node.js – Full support Node.js 18 (Release date: 2022-04-19) footnote Full support
`TextEncoderStream()` constructor	Chrome – Full support Chrome 71 (Release date: 2018-12-04) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 105 (Release date: 2022-09-20) footnote Full support	Opera – Full support Opera 58 (Release date: 2019-01-23) footnote Full support	Safari – Full support Safari 14.1 (Release date: 2021-04-26) footnote Full support	Chrome Android – Full support Chrome Android 71 (Release date: 2018-12-04) footnote Full support	Firefox for Android – Full support Firefox for Android 105 (Release date: 2022-09-20) footnote Full support	Opera Android – Full support Opera Android 50 (Release date: 2019-02-18) footnote Full support	Safari on iOS – Full support Safari on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Samsung Internet – Full support Samsung Internet 10 (Release date: 2019-08-22) footnote Full support	WebView Android – Full support WebView Android 71 (Release date: 2018-12-04) footnote Full support	WebView on iOS – Full support WebView on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Bun – Full support Bun 1.1.23 (Release date: 2024-08-14) footnote Full support	Deno – Full support Deno 1.11 (Release date: 2021-06-08) footnote Full support	Node.js – Full support Node.js 16.6 (Release date: 2021-07-29) footnote Full support
`encoding`	Chrome – Full support Chrome 71 (Release date: 2018-12-04) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 105 (Release date: 2022-09-20) footnote Full support	Opera – Full support Opera 58 (Release date: 2019-01-23) footnote Full support	Safari – Full support Safari 14.1 (Release date: 2021-04-26) footnote Full support	Chrome Android – Full support Chrome Android 71 (Release date: 2018-12-04) footnote Full support	Firefox for Android – Full support Firefox for Android 105 (Release date: 2022-09-20) footnote Full support	Opera Android – Full support Opera Android 50 (Release date: 2019-02-18) footnote Full support	Safari on iOS – Full support Safari on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Samsung Internet – Full support Samsung Internet 10 (Release date: 2019-08-22) footnote Full support	WebView Android – Full support WebView Android 71 (Release date: 2018-12-04) footnote Full support	WebView on iOS – Full support WebView on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Bun – Full support Bun 1.1.23 (Release date: 2024-08-14) footnote Full support	Deno – Full support Deno 1.11 (Release date: 2021-06-08) footnote Full support	Node.js – Full support Node.js 16.6 (Release date: 2021-07-29) footnote Full support
`readable`	Chrome – Full support Chrome 71 (Release date: 2018-12-04) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 105 (Release date: 2022-09-20) footnote Full support	Opera – Full support Opera 58 (Release date: 2019-01-23) footnote Full support	Safari – Full support Safari 14.1 (Release date: 2021-04-26) footnote Full support	Chrome Android – Full support Chrome Android 71 (Release date: 2018-12-04) footnote Full support	Firefox for Android – Full support Firefox for Android 105 (Release date: 2022-09-20) footnote Full support	Opera Android – Full support Opera Android 50 (Release date: 2019-02-18) footnote Full support	Safari on iOS – Full support Safari on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Samsung Internet – Full support Samsung Internet 10 (Release date: 2019-08-22) footnote Full support	WebView Android – Full support WebView Android 71 (Release date: 2018-12-04) footnote Full support	WebView on iOS – Full support WebView on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Bun – Full support Bun 1.1.23 (Release date: 2024-08-14) footnote Full support	Deno – Full support Deno 1.11 (Release date: 2021-06-08) footnote Full support	Node.js – Full support Node.js 16.6 (Release date: 2021-07-29) footnote Full support
`writable`	Chrome – Full support Chrome 71 (Release date: 2018-12-04) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 105 (Release date: 2022-09-20) footnote Full support	Opera – Full support Opera 58 (Release date: 2019-01-23) footnote Full support	Safari – Full support Safari 14.1 (Release date: 2021-04-26) footnote Full support	Chrome Android – Full support Chrome Android 71 (Release date: 2018-12-04) footnote Full support	Firefox for Android – Full support Firefox for Android 105 (Release date: 2022-09-20) footnote Full support	Opera Android – Full support Opera Android 50 (Release date: 2019-02-18) footnote Full support	Safari on iOS – Full support Safari on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Samsung Internet – Full support Samsung Internet 10 (Release date: 2019-08-22) footnote Full support	WebView Android – Full support WebView Android 71 (Release date: 2018-12-04) footnote Full support	WebView on iOS – Full support WebView on iOS 14.5 (Release date: 2021-04-26) footnote Full support	Bun – Full support Bun 1.1.23 (Release date: 2024-08-14) footnote Full support	Deno – Full support Deno 1.11 (Release date: 2021-06-08) footnote Full support	Node.js – Full support Node.js 16.6 (Release date: 2021-07-29) footnote Full support

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

Full support: Full support
Partial support: Partial support
: Has more compatibility info.