Blob: stream() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

See full compatibility

Note: This feature is available in Web Workers.

The stream() method of the Blob interface returns a ReadableStream which upon reading returns the data contained within the Blob.

Syntax

stream()

Parameters

None.

Return value

A ReadableStream which, upon reading, returns the contents of the Blob.

Usage notes

With stream() and the returned ReadableStream, you gain several interesting capabilities:

Call getReader() on the returned stream to get an object to use to read the data from the blob using methods such as the ReadableStreamDefaultReader interface's read() method.
Call the returned stream's pipeTo() method to pipe the blob's data to a writable stream.
Call the returned stream's tee() method to tee the readable stream. This returns an array containing two new ReadableStream objects, each of which returns the contents of the Blob.
Call the returned stream's pipeThrough() method to pipe the stream through a TransformStream or any other readable and writable pair.

Specifications

Specification
File API # dom-blob-stream

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
`stream()`	Chrome – Full support Chrome 76 (Release date: 2019-07-30) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 69 (Release date: 2019-09-03) footnote Full support	Opera – Full support Opera 63 (Release date: 2019-08-20) footnote Full support	Safari – Full support Safari 14.1 (Release date: 2021-04-26) footnote Full support	Chrome Android – Full support Chrome Android 76 (Release date: 2019-07-30) footnote Full support	Firefox for Android – Full support Firefox for Android 79 (Release date: 2020-07-28) footnote Full support	Opera Android – Full support Opera Android 54 (Release date: 2019-10-18) 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 12 (Release date: 2020-06-19) footnote Full support	WebView Android – Full support WebView Android 76 (Release date: 2019-07-30) 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 (Release date: 2023-09-08) footnote Full support	Deno – Full support Deno 1 (Release date: 2020-05-13) footnote Full support	Node.js – Full support Node.js 16.7 (Release date: 2021-08-17) footnote Full support

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Full support: Full support