# Compression

Wisej.NET provides built-in compression support for all `HTTP` and `WebSocket` communications.

## Enabling Compression

Compression is enabled by default. Both browser and Wisej.NET server use `gzip` as the default compression system.

Wisej.NET automatically compresses all `HTTP` and `WebSocket` packets when the size exceeds a certain threshold, ensuring that compression doesn't result in larger packets.

You may disable `WebSocket` compression by setting the `enableWebSocketCompression` setting to `false` in `Default.json`.

Disabling `WebSocket` compression allows you to debug the frames when examining Network packets using the browser's Developer Tools.

```javascript
{
  "enableWebSocketCompression": false
}
```

## Brotli

Wisej.NET fully supports the [`Brotli`](https://en.wikipedia.org/wiki/Brotli) compression library - even on browsers without native `Brotli` support.

Use Add New Item and select Brotli to add the `Wisej.Web.Ext.Brotli` assembly. The source code for this extension is available in our Github repository: [Brotli extension source code](https://github.com/iceteagroup/wisej-extensions/tree/2.0/Wisej.Web.Ext.Brotli).

{% hint style="danger" %}
Under some still unknown circumstances, the `Brotli` implementation from Google may generate the error "Unused space" on the browser. If you encounter this error, simply remove `Wisej.Web.Ext.Brotli.dll`.
{% endhint %}