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TextDecoderStream

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.

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Note: This feature is available in Web Workers.

The TextDecoderStream interface of the Encoding API converts a stream of text in a binary encoding, such as UTF-8 etc., to a stream of strings. It is the streaming equivalent of TextDecoder. It implements the same shape as a TransformStream, allowing it to be used in ReadableStream.pipeThrough() and similar methods.

Constructor

TextDecoderStream(): Creates a new TextDecoderStream object.

Instance properties

TextDecoderStream.encoding Read only: An encoding.
TextDecoderStream.fatal Read only: A Boolean indicating if the error mode is fatal.
TextDecoderStream.ignoreBOM Read only: A Boolean indicating whether the byte order mark is ignored.
TextDecoderStream.readable Read only: Returns the ReadableStream instance controlled by this object.
TextDecoderStream.writable Read only: Returns the WritableStream instance controlled by this object.

Examples

Examples of streaming structured data and HTML

Specifications

Specification
Encoding # interface-textdecoderstream

Browser compatibility

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This page was last modified on May 21, 2026 by MDN contributors.

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