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# Plugins
The Glean JavaScript SDK accepts a plugin array as an initialization parameter.
```js
import Glean from "@mozilla/glean/webext"
// This is not a real available plugin,
// it is a hypothetical one for illustration purposes.
import HypotheticalPlugin from "@mozilla/glean/plugins/hypothetical"
Glean.initialize(
"my.fancy.modified.app",
uploadStatus,
{
plugins: [
new HypotheticalPlugin("with", "hypothetical", "arguments")
]
}
);
```
Plugins attach to specific internal events on the SDK and can modify its behavior.
A big advantage of plugins is that they can address very specific use cases of Glean without bloating the final size of the SDK or overloading Glean's configuration object.
{{#include ../../../../shared/blockquote-info.html}}
## On writing your own plugins
> It is not currently possible for users to write their own plugins,
> as this feature is still in its infancy.
## Available plugins
### [PingEncryptionPlugin](./encryption.md)
The `PingEncryptionPlugin` encrypts the pings payloads before pings are sent.