Examine source code of TabQuiz

{
  "manifest_version": 2,
  "name": "TabQuiz",
  "version": "1.0.0",
  "description": "Show a short multiple-choice quiz on each new tab. Questions rotate daily. Scores stored locally.",
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tabquiz@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}