Examine source code of WebTime Tracker

{
  "name": "WebTime Tracker",
  "description": "Track active browsing time locally across websites with service/page views, periods, blacklist and export.",
  "version": "1.1",
  "manifest_version": 3,
  "permissions": [
    "tabs",
    "storage",
    "unlimitedStorage",
    "alarms",
    "idle",
    "windows"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    },
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "youtube.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "turbo@webtimetracker",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}