You don't say what your source data is, so this may not be what you're looking for, but have you considered using something like Excel::Writer::XLSX to create the Excel file, and something like Datatables (via DataTables) for the user preview for consultation?

Update: Fixed module name.

In reply to Re: XML Parsing in a "mixed content" file by marto
in thread XML Parsing in a "mixed content" file by llarochelle

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