I'm using tcpdf to create pdf files with ajax call that send some data to pdf script for generating the pdf, then i would like to pass the pdf to iframe src

My tcpdf pdf creation ; last lines

    $p = header ("Content-Type: application/pdf");
    echo $pdf->Output('', 'S');

Ajax call

 var form = $("#submiEditCanevaForm");
        $.ajax({
            url: form.attr('action'),
            type: form.attr('method'),
            data: form.serialize(),
            success: function (data) {

                console.log(data);

                var blob = new Blob([data], { type: 'application/pdf' });
                var downloadUrl = URL.createObjectURL(blob);
                $('#pdf_file_edit').attr("src", downloadUrl);


   
            }


        });