Examine source code of Ad Cleaner

{
  "manifest_version": 2,
  "name": "Ad Cleaner",
  "version": "2.0",
  "description": "A powerful ad blocker with tracker visibility and site-specific controls",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>",
    "tabs",
    "webNavigation",
    "*://*.youtube.com/*",
    "*://*.googlesyndication.com/*",
    "*://*.doubleclick.net/*",
    "*://*.google-analytics.com/*",
    "*://*.googleadservices.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "youtube-cleaner.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon.png",
      "96": "icons/icon.png"
    }
  },
  "icons": {
    "48": "icons/icon.png",
    "96": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8091756-e4f3-4308-a548-de9d59f787ae}"
    }
  }
}