Most file converters ask you to hand your data to a stranger's server. For anyone working with client figures, personnel lists, or anything covered by a confidentiality clause, that is a non-starter. So I built one that doesn't. The Excelized Converter is a single HTML file that runs entirely in your browser. You open it, drop in a file, and it reads, cleans, and exports — with no upload, no account, and no backend. The file you drop in never leaves your device. What it does
