import 'dart:html' as html; import 'dart:typed_data'; Future saveFileBytes(Uint8List bytes, String fileName) async { final blob = html.Blob([bytes], 'text/plain; charset=utf-8'); final url = html.Url.createObjectUrlFromBlob(blob); final anchor = html.AnchorElement(href: url) ..setAttribute("download", fileName) ..style.display = "none"; html.document.body?.append(anchor); anchor.click(); anchor.remove(); html.Url.revokeObjectUrl(url); }