Examine source code of AdsFusion Pixel Detector

{
  "manifest_version": 2,
  "name": "AdsFusion Pixel Detector",
  "description": "Detect Facebook Pixel, Google Pixel, and Outbrain Pixel",
  "version": "1.0",
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb6c64ec-deed-4cbd-8c42-f47dd8d50ef4}"
    }
  }
}