Examine source code of Copy Link

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "version": "1.1.1",
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "clipboardWrite",
    "notifications"
  ],
  "icons": {
    "60": "icons/icon-add-60.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{244c6d75-aa86-4571-b753-355045dade65}"
    }
  }
}