TextDecoderStream: encoding property

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.

Note: This feature is available in Web Workers.

The encoding read-only property of the TextDecoderStream interface returns a string containing the name of the encoding algorithm used by the specific decoder.

The encoding is set by the constructor label parameter, and defaults to utf-8.

Value

A string containing the lower-cased ASCII name of the encoding format.

The allowed values are the same as those listed in TextDecoder.encoding (the labels in Encoding API Encodings).

Examples

Returning the value of encoding from a TextDecoderStream.

js
stream = new TextDecoderStream();
console.log(stream.encoding); // returns the default "utf-8"

Specifications

Specification
Encoding
# dom-textdecoder-encoding

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
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

Legend

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

Full support
Full support