SheetPair

SheetPair とは？

Deterministic CSV and Excel reconciliation. Upload two files, map key columns, and see every match, difference, and missing row in seconds. No AI in the match path — same files always produce the same result. Auditable and reproducible. All processing runs in your browser via Web Workers, so your data never leaves your machine. Exact + Jaro-Winkler fuzzy + numeric tolerance matching. Export to CSV or Excel. Free for 3 comparisons/month, up to 1,000 rows. No signup.