DecompressionStream: DecompressionStream() constructor

Baseline 2023

Newly available

Since May 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

Note: This feature is available in Web Workers.

The DecompressionStream() constructor creates a new DecompressionStream object which decompresses a stream of data.

Syntax

js
new DecompressionStream(format)

Parameters

format

One of the following compression formats:

"gzip"

Decompress the stream using the GZIP format.

"deflate"

Decompress the stream using the DEFLATE algorithm in ZLIB Compressed Data Format. The ZLIB format includes a header with information about the compression method and the uncompressed size of the data, and a trailing checksum for verifying the integrity of the data

"deflate-raw"

Decompress the stream using the DEFLATE algorithm without a header and trailing checksum.

Exceptions

TypeError

Thrown if the format passed to the constructor is not supported.

Examples

In this example a gzip-compressed blob is decompressed.

js
const ds = new DecompressionStream("gzip");
const decompressedStream = blob.stream().pipeThrough(ds);

Specifications

Specification
Compression Standard
# dom-decompressionstream-decompressionstream

Browser compatibility

BCD tables only load in the browser