Examine source code of XAF to ERN

{
  "manifest_version": 3,
  "name": "XAF to ERN",
  "version": "1.0",
  "description": "Convert XAF to ERN",
  "browser_specific_settings": {
    "gecko": {
      "id": "xaf-to-ern@example.com"
    }
  }
}