Examine source code of Advanced copy

{
  "name": "__MSG_extensionName__",
  "default_locale": "en",
  "version": "1.0",
  "description": "__MSG_extensionDescription__",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "author": "Enmanuel Toribio",
  "permissions": [
    "contextMenus",
    "clipboardWrite"
  ],
  "manifest_version": 2
}