Examine source code of QueryFan Search Launcher

{
  "manifest_version": 2,
  "name": "QueryFan Search Launcher",
  "version": "1.0.0",
  "description": "Launch one search query across selected engines, save preferred engines locally, and reuse the current tab title as a quick query.",
  "author": "QueryFan Works",
  "browser_specific_settings": {
    "gecko": {
      "id": "{7938a188-55c8-40d7-b940-a6c5b7e80be5}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_popup": "popup/popup.html",
    "default_title": "QueryFan Search Launcher"
  },
  "permissions": [
    "tabs",
    "storage",
    "activeTab"
  ]
}