DecompressionStream: DecompressionStream() constructor

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 Streams
# dom-decompressionstream-decompressionstream

Browser compatibility

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