Examine source code of Contact Search Pro

{
  "manifest_version": 2,
  "name": "Contact Search Pro",
  "version": "1.0",
  "description": "A completely FREE and feature rich email and social media extractor. No data collection - all data stays locally on your device.",
  "browser_specific_settings": {
    "gecko": {
      "id": "contactsearchpro@techbitan.eu",
      "strict_min_version": "79.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "developer": {
    "name": "Bitan Bhattachirjee",
    "url": "https://techbitan.eu"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "downloads",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Contact Search Pro",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "privacy_policy": "https://techbitan.eu/contactsearchproprivacypolicy2"
}