Compression Streams API

The Compression Streams API provides a JavaScript API for compressing and decompressing streams of data using the gzip or deflate formats.

Built in compression means that JavaScript applications will not need to include a compression library, which makes the download size of the application smaller.

Interfaces

CompressionStream

Compresses a stream of data.

DecompressionStream

Decompresses a stream of data.

Examples

In this example a stream is compressed using gzip compression.

const compressedReadableStream = inputReadableStream.pipeThrough(new CompressionStream('gzip'));

In the following example a function decompresses a blob using gzip.

async function DecompressBlob(blob) {
  const ds = new DecompressionStream('gzip');
  const decompressedStream = blob.stream().pipeThrough(ds);
  return await new Response(decompressedStream).blob();
}

Specifications

Specification
Compression Streams
# compression-stream

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
Compression_Streams_API
80
80
No
No
67
No
80
80
No
57
No
13.0
CompressionStream
80
80
No
No
67
No
80
80
No
57
No
13.0
readable
80
80
No
No
67
No
80
80
No
57
No
13.0
writable
80
80
No
No
67
No
80
80
No
57
No
13.0

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Compression_Streams_API