Hi I just spotted something on your code: you are appending an extra comma after processing the last column of each line in the worksheet. This can lead to problems specially if you're using the generated csv file to load data to a database for example. I did the change below to make sure that did not happen. I hope it helps

#!/usr/bin/perl

use strict;
use warnings;
use Spreadsheet::XLSX;
 
my $excel = Spreadsheet::XLSX -> new ('/tmp/myexcel.xlsx');
my $line;
foreach my $sheet (@{$excel -> {Worksheet}}) {
    printf("Sheet: %s\n", $sheet->{Name});
    $sheet -> {MaxRow} ||= $sheet -> {MinRow};
    foreach my $row ($sheet -> {MinRow} .. $sheet -> {MaxRow}) {
        $sheet -> {MaxCol} ||= $sheet -> {MinCol};
        foreach my $col ($sheet -> {MinCol} ..  $sheet -> {MaxCol}) {
            my $cell = $sheet -> {Cells} [$row] [$col];
            if ($cell) {
                $line .= "\"".$cell -> {Val}."\",";
                $line .= $cell -> {Val};
                if ($col != $sheet -> {MaxCol}) #appends the comma onl
+y if the column being processed is not the last
                {
                    $line .= ",";
                }
            }
        }
        chomp($line);
        print "$line\n";
        $line = '';
    }
}
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