Examine source code of o7 Password Generator

{
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{e817be08-5d46-4cb2-8de9-813c01bfb7c2}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "name": "o7 Password Generator",
  "version": "1.6",
  "description": "__MSG_appDescription__",
  "default_locale": "en",
  "action": {
    "default_icon": "img/icons/toolbar.png",
    "default_popup": "pgs/popup.html"
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "img/icons/icon16.png",
    "32": "img/icons/icon32.png",
    "48": "img/icons/icon48.png",
    "64": "img/icons/icon64.png",
    "96": "img/icons/icon96.png",
    "128": "img/icons/icon128.png"
  }
}