Examine source code of Password Maker

{
  "name": "Password Maker",
  "description": "Generate passwords based on a PIN, a phrase and the site name.",
  "version": "4.1",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "password-maker@till-dr.dev"
    }
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": "icons/icon.png"
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "activeTab"
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+P",
        "mac": "MacCtrl+Shift+P"
      }
    }
  }
}