Examine source code of YouWant?YouGet! Gift Grab

{
  "manifest_version": 2,
  "name": "Save to Gift Registry",
  "version": "1.0.0",
  "description": "Save any product to your gift list with one click.",
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Save to Gift Registry"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "save-to-registry@youwantyouget.lovable.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent"
        ],
        "optional": []
      }
    }
  },
  "privacy_policy": "https://youwantyouget.lovable.app/privacy-policy.html",
  "data_collection_permission": {
    "collects_data": true,
    "collected_data": {
      "authentication": {
        "description": "A login token is stored locally to keep the user connected to their gift registry account.",
        "is_required": true
      },
      "website_content": {
        "description": "Product title, price, image and description are read from the active tab only when the user clicks the extension icon.",
        "is_required": true
      }
    }
  }
}