Examine source code of Chart to Table Pro

{
  "manifest_version": 3,
  "name": "Chart to Table Pro",
  "version": "1.1",
  "description": "Extract data from charts and export to Excel.",
  "permissions": [
    "activeTab",
    "scripting",
    "downloads",
    "tabs",
    "webRequest"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "chart-to-table-pro@dinesh",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}