SheetCleaner

Clean and deduplicate Excel files locally in your browser

About SheetCleaner

SheetCleaner helps you merge, clean, and deduplicate Excel and CSV files without uploading sensitive data. Set explicit rules for multi-column matching, keep the latest or highest-value record, apply numeric tolerance or regex, preview every change, and export a clean file. It supports multiple files and sheets, runs entirely in your browser, and works without signup.

Screenshots

Maker

Listed from Product Hunt. Claude Updates summarizes public launches and links back to the source.