TidyCSV

TidyCSV is a free CSV cleaner that runs locally in your browser. Remove duplicate rows, trim whitespace, collapse repeated spaces and drop empty rows. Compare before and after, then export every row. It supports comma, semicolon, tab and pipe separators, plus UTF-8 and Windows-1250 imports. Leading zeros stay as text. The complete offline kit includes MIT-licensed source. No analytics or file uploads in the application. Optional USDT support; no features require payment. Built with AI assistance.