Data Deduplicator
Find and remove duplicate rows in your CSV files. Compare by all columns or select specific ones to match on.
- 100% client-side — your data never leaves your browser
- Choose which columns to compare for duplicates
- Preview duplicates before removing
- Download deduplicated CSV
Drop your CSV file here or click to browse
CSV files up to 5 MB
Compare Columns
Select which columns to use for duplicate detection. Rows matching on ALL selected columns are considered duplicates.