CSV deduper
Clean Your Spreadsheets Instantly
Duplicate rows in CSV files can break data analysis, lead to double-billing in e-commerce, or ruin email marketing campaigns. This tool provides an instant, privacy-focused way to remove identical rows from any CSV string.
Frequently Asked Questions
Common questions about this tool.
How does it find duplicates? ▼
It compares the exact string contents of every row. If two rows are identical (including their columns), the second occurrence is removed.
Is my CSV uploaded to a server? ▼
No! The deduplication runs entirely on your device inside your web browser. We never see your data, making it completely secure for sensitive spreadsheets.
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