---

title: "DecompressionStream: readable property"

short-title: readable

slug: Web/API/DecompressionStream/readable

page-type: web-api-instance-property

browser-compat: api.DecompressionStream.readable

---

{{APIRef("Compression Streams API")}}{{AvailableInWorkers}}

The **`readable`** read-only property of the {{domxref("DecompressionStream")}} interface returns a {{domxref("ReadableStream")}} that emits decompressed data as {{jsxref("Uint8Array")}} chunks.

## Value

A {{domxref("ReadableStream")}}.

## Examples

This example creates a `DecompressionStream` that performs gzip decompression. It writes some compressed binary data to the `writable` stream, then reads the decompressed data from the `readable` stream, decoding it as UTF-8 text.

```js

const stream = new DecompressionStream("gzip");

// Write data to be compressed

const data = Uint8Array.fromBase64(

"H4sIAAAAAAAAE/NIzcnJ11Eozy/KSVEEAObG5usNAAAA",

);

const writer = stream.writable.getWriter();

writer.write(data);

writer.close();

// Read compressed data

const reader = stream.readable.getReader();

let done = false;

let output = [];

while (!done) {

const result = await reader.read();

if (result.value) {

output.push(...result.value);

}

done = result.done;

}

console.log(new TextDecoder().decode(new Uint8Array(output))); // Hello, world!

```

## Specifications

{{Specifications}}

## Browser compatibility

{{Compat}}

## See also

- {{domxref("TransformStream.readable")}}