Flutter Web download pdf as files from Firebase storage

download_web.dart

import 'dart:html' as html;
import 'dart:typed_data';
import 'package:cross_file/cross_file.dart';
import 'package:firebase_storage/firebase_storage.dart';

downloadFileWeb(String url,String fileName) async {

    final httpsReference = FirebaseStorage.instance.refFromURL(url);

    try {
      const oneMegabyte = 1024 * 1024;
      final Uint8List? data = await httpsReference.getData(oneMegabyte);
      // Data for "images/island.jpg" is returned, use this as needed.
      XFile.fromData(data!,
              mimeType: "application/octet-stream", name: fileName + ".pdf")
          .saveTo("C:/"); // here Path is ignored
    } on FirebaseException catch (e) {
      // Handle any errors.
    }
  // for other platforms see this solution : https://firebase.google.com/docs/storage/flutter/download-files#download_to_a_local_file 
}
previewPDFFile(url) {
 html.window.open(url,"_blank"); //opens pdf in new tab 
}