Examine source code of Daily Currency Rates

{
  "manifest_version": 3,
  "name": "Daily Currency Rates",
  "version": "1.1",
  "description": "Convert currencies using official daily exchange rates from the Frankfurter API.",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Daily Currency Rates",
    "default_icon": "icon-48.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "daily-currency-rates-philip-2026@addons.mozilla.org",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}