Multi-Column Key Deduplication Engine

CSV Duplicate Remover

Yes. When enabled, values like 'user@example.com' and 'USER@EXAMPLE.COM' are recognized as identical duplicates.

Identify and remove duplicate spreadsheet records by specific key columns with case-insensitive matching in your browser.

Drop your CSV file here to deduplicate

Eliminate redundant records by entire row or specific matching criteria.

Initial Rows

Unique Kept

Duplicates Removed

Matching Criteria (Check columns to base duplicate checks on):

Case-insensitive comparison Trim whitespace before comparison

Can I remove duplicates based on only one column (like Email)?

Yes. Select the specific column checkbox (e.g., 'Email') to purge rows that share duplicate emails while ignoring differences in other columns.

Does the tool support case-insensitive duplicate matching?

Yes. When enabled, values like '[email protected]' and '[email protected]' are recognized as identical duplicates.

Is my customer data uploaded to any remote server?

No. All deduplication calculations run directly inside your device's browser memory sandbox.