Examine source code of Password Generator

{
  "manifest_version": 2,
  "name": "Password Generator",
  "permissions": [
    "clipboardWrite",
    "storage"
  ],
  "version": "1.0.12",
  "description": "Generates a random password.",
  "icons": {
    "48": "icons/key-48.png"
  },
  "browser_action": {
    "default_icon": "icons/key-48.png",
    "default_title": "Password Generator",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{78db6b2c-e2f4-4bab-b237-bf018f93f18a}"
    }
  }
}