Remove Duplicate Rows
Find and remove duplicate rows — across all columns or a chosen subset.
Everything runs in your browser — your file never leaves your device.
Tip: choose specific columns (e.g. just the email) to treat rows as duplicates even when other cells differ.
About Remove Duplicate Rows
Remove Duplicate Rows finds and deletes duplicates in a spreadsheet — across every column, or only the columns you select. Comparing by chosen columns is the powerful mode: match on just the email column, for instance, and rows count as duplicates even when other cells differ.
Matching is tunable: ignore case, trim surrounding spaces, and decide whether the first or the last occurrence of each duplicate group is kept. The result panel reports total data rows, unique rows and how many were removed, with a preview of the cleaned table.
The tool accepts XLSX, XLS, CSV, TSV and ODS files and runs entirely in your browser — your list never leaves your device, and the original file is never modified; you download a new, deduplicated copy.
How to use Remove Duplicate Rows
- Upload your spreadsheet — XLSX, XLS, CSV, TSV or ODS.
- Choose what to compare: all columns, or a subset such as just the email column.
- Tune the matching with “Ignore case” and “Trim spaces”, and pick whether to keep the first or last match.
- Review the stats — total, unique, removed — and the preview.
- Download the deduplicated file.