Examine source code of Universal Ad Blocker

{
  "manifest_version": 2,
  "name": "Ultra Ad Blocker & Security Shield",
  "version": "3.0.0",
  "description": "Maximum protection: blocks ads, popups, hidden elements, malicious downloads, and background scripts",
  "browser_specific_settings": {
    "gecko": {
      "id": "universal-adblocker@avinash.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "downloads",
    "<all_urls>",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_title": "Ultra Ad Blocker & Security"
  },
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  }
}