Remove duplicate rows from a CSV, on the whole row or keyed on the columns you choose, and see exactly how many were dropped.. CSV Duplicate Remover is a free online tool from the ToolsRift Charts & Data Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Load your CSV, choose whether to match on the whole row or specific key columns, set case and whitespace handling, then download the deduplicated file.
By default two rows are duplicates only when every field matches. If you tick specific key columns instead, rows are compared on just those fields — so you can keep one record per email address or per order ID even when the other columns differ.
The first occurrence in the file order is kept and later matches are dropped, which preserves the original sequence of your data. The removed rows are counted and listed so you can confirm the tool did what you expected before downloading.
Yes. The case-insensitive option treats Alice and alice as the same value, and trimming ignores stray leading or trailing spaces. Both are common causes of near-duplicates in exported contact and lead lists.