DATA CLEANING
Remove duplicate rows from Excel or CSV
Clean exact repeated rows from the first sheet of a spreadsheet without uploading it for server processing.
How to remove duplicate rows
- Select an Excel or CSV file.
- Choose Remove duplicates.
- The first row is treated as the header.
- Exact repeated data rows are removed and a new XLSX file is downloaded.
Why exact-row matching is the safe starting point
Deduplication can mean different things. Two customer rows might share an email address but have different dates, or two exported records may differ only in a status field. This launch version removes only exact whole-row duplicates so that it does not guess which column should define identity.
Before using the cleaned file
Keep the original. Spreadsheet cleaning can affect downstream totals, formulas and audit trails. Review the reported before/after row count and confirm that exact-row matching fits your workflow.
Frequently asked questions
How are duplicates detected?
The launch version compares the values across the entire row. A row is removed only when all represented cell values match an earlier row.
Does it remove duplicates based on one column?
Not yet. Column-selective duplicate rules are a planned enhancement. The current tool performs exact whole-row deduplication.
Which worksheet is processed?
Only the first worksheet is processed in this initial version. The output is saved as a new XLSX file with a sheet named Cleaned.