XLS converter

XLS is yesterday's spreadsheet format carrying today's records. The PDF conversion renders it through a full office engine on our server and deletes the uploaded file within about an hour.

What is XLS?

XLS is the binary Excel format used up to Excel 2003: a closed container of sheets, formulas and formatting that XLSX replaced with open XML. Old exports, bank statements and business records still arrive as .xls, and while modern spreadsheet apps usually open them, layouts drift and some tooling refuses the format outright. Converting to PDF pins down exactly what the numbers looked like.