Examine source code of Currency.Wiki - Currency Converter & Rates

{
  "manifest_version": 3,
  "name": "__MSG_app_name__",
  "version": "2.0.15",
  "description": "__MSG_app_description__",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "currency-wiki@currency.wiki",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity"
        ],
        "optional": [
          "websiteContent",
          "technicalAndInteraction"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "__MSG_app_name__"
  },
  "sidebar_action": {
    "default_title": "__MSG_app_name__ - AI Smart Scanner",
    "default_panel": "ai-smart-scanner.html",
    "open_at_install": false,
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-loader.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage",
    "alarms",
    "downloads",
    "identity",
    "activeTab",
    "notifications"
  ],
  "host_permissions": [
    "https://currency.wiki/*",
    "https://*.currency.wiki/*",
    "https://*/*"
  ],
  "optional_permissions": [],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*",
        "assets/*",
        "content.js",
        "chart.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+U",
        "mac": "Command+Shift+U"
      },
      "description": "__MSG_keyboard_shortcut_desc__"
    }
  }
}