Find duplicates using selected columns and preview the cleaned result before saving it.
Add one file to process.
Files are handled securely and the originals are never changed.
TOOL GUIDE
Find duplicates using selected columns and preview the cleaned result before saving it.
1. Prepare the input
Choose a file in CSV, XLSX format. Where available, use a sample file to inspect the complete result flow first.
2. Confirm the processing rules
Process one file at a time. For Excel files, you can choose the exact sheet to use.
3. Review and save the result
After processing, review the summary metrics and before-and-after preview, then save only the result you need.
Columns used to detect duplicates
Enter multiple columns separated by commas.
Keep the first value
When values repeat, keep the first row.
Your original upload is never modified. A separate result file is created.
Review how the result will change before saving it.
Choose the relevant options and start right away.