Examine source code of Pixel Detective

{
  "manifest_version": 2,
  "name": "Pixel Detective",
  "version": "1.0.0",
  "description": "Phát hiện Facebook Pixel, TikTok Pixel và Google Analytics trên bất kỳ website nào",
  "browser_specific_settings": {
    "gecko": {
      "id": "pixel-detective@extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon48.png"
    },
    "default_title": "Pixel Detective"
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/detector.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "persistent": false
  }
}