Examine source code of Tab Fortune Teller

{
  "manifest_version": 2,
  "name": "Tab Fortune Teller",
  "version": "1.0",
  "description": "Discover your fate with every tab! Get a random fortune or proverb when opening a new tab. Save favorites and customize settings in a vibrant interface.",
  "permissions": [
    "tabs",
    "storage",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{662b3d62-1c38-48da-b67d-3d050ef6efee}"
    }
  }
}