Examine source code of Productivity Time Tracker

{
  "manifest_version": 2,
  "name": "Productivity Time Tracker",
  "version": "1.0",
  "description": "Track your web usage time, set limits, and get detailed reports",
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "webNavigation",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cead4bb0-5c6d-4ca7-ba52-ec5d168aa6e0}"
    }
  }
}