Examine source code of Time Tracker Pro

{
  "manifest_version": 2,
  "name": "Time Tracker Pro",
  "version": "1.3",
  "description": "Track and analyze your browsing habits with detailed insights",
  "permissions": [
    "tabs",
    "storage",
    "idle",
    "alarms"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Time Tracker - See your browsing analytics"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0db2471e-c05e-4010-ac15-aa1288cc3c84}"
    }
  }
}