This might not work but what do the cell values look like when the file is parsed using Excel::ValueReader::XLSX?

If you parse a lot of XLSX files and only need the values then Excel::ValueReader::XLSX is substantially faster at parsing files. Recent versions of Spreadsheet::Read are also able to use it as a backend if you want to be able to switch between parsers.

In reply to Re: Spreadsheet::ParseXLSX returning zero by swl
in thread Spreadsheet::ParseXLSX returning zero by bitingduck

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