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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.

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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

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This page was last modified on Nov 26, 2025 by MDN contributors.

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