Examine source code of Email Format Converter

{
  "manifest_version": 2,
  "name": "Email Format Converter",
  "version": "1.0",
  "description": "Converts email addresses to alternative formats (e.g., [at], [dot]).",
  "permissions": [
    "clipboardWrite"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4758264c-83fe-4692-b08f-d856dbcf9db4}"
    }
  }
}