Examine source code of Site Search

{
  "manifest_version": 3,
  "name": "Site Searcher",
  "version": "1.0",
  "description": "Search within the current site using your preferred search engine.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9151a4ba-739f-4484-bd33-920706d78b37}",
      "strict_min_version": "115.0"
    }
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "19": "icons/icon-19.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+P"
      },
      "description": "Open Site Searcher popup"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "19": "icons/icon-19.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}