About Duplicate Row Remover
Deduplicate spreadsheet datasets with precision. Features 3 modes: Keep first occurrence, Keep last occurrence, or Extract duplicate records only. Target entire rows or specific key columns (e.g. Email, ID, SKU).
Key Capabilities & Features
- 3 Deduplication Modes: Keep First occurrence, Keep Last occurrence, or Extract Duplicates Only
- Deduplicate by entire row content or by a specific selected column (e.g. Email, Phone, SKU)
- Instant counter badge reporting the exact number and percentage of duplicates removed
- Case-insensitive matching option for emails, usernames, and identifiers
- Live Dataset Diff Metrics card reporting row reduction and modified totals
- Export deduplicated records directly to CSV, TSV, or genuine Excel (.xlsx)
How to Use Duplicate Row Remover
Load Your Dataset
Paste or open your CSV file in the deduplicator workspace.
Choose Mode & Column
Select your mode (Keep First, Keep Last, or Extract Duplicates) and choose the target column.
Remove Duplicates
Click 'Remove Duplicate Rows' to instantly purify your dataset.
Privacy & In-Browser Execution Guarantee
100% client-side privacy. All calculations, parsing, and charting execute locally in your browser with zero server uploads.
Frequently Asked Questions
Which instance of the duplicate is preserved?
You can choose! By default it keeps the first occurrence, but you can also choose to keep the last occurrence or isolate duplicate records only for investigation.
Can I inspect just the duplicates that were removed?
Yes! Select the 'Extract Duplicates Only' mode to view and export only the duplicate rows.