Examine source code of PopQuiz

{
  "manifest_version": 2,
  "name": "Study Pop Quiz",
  "version": "1.0.0",
  "description": "Practice multiple-choice questions while you browse.",
  "permissions": [
    "storage",
    "alarms",
    "notifications",
    "tabs"
  ],
  "web_accessible_resources": [
    "questions/*.json"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_title": "Study Pop Quiz",
    "default_popup": "settings.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6f03a06-ea3f-41af-b191-2b60ca080ddd}"
    }
  }
}