Examine source code of Gerador de Documentos

{
  "manifest_version": 3,
  "name": "Gerador de Documentos",
  "version": "1.0",
  "description": "Gera CPF, RG, CNPJ e Inscrição Estadual (formato válido) para uso em testes.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icone-16.png",
      "32": "icons/icone-32.png",
      "48": "icons/icone-48.png",
      "128": "icons/icone-128.png"
    }
  },
  "icons": {
    "16": "icons/icone-16.png",
    "32": "icons/icone-32.png",
    "48": "icons/icone-48.png",
    "128": "icons/icone-128.png"
  },
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "gerador.js",
        "configuracao.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gerador-cpf-rg@andrelmi",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}