Remove Duplicate Rows
Remove duplicate rows from Excel or CSV files by SKU, barcode, or email. Choose which row to keep, normalize whitespace, and export securely in your browser.
Excel (.xlsx, .xls) or CSV
Tips
- Columns labeled SKU, barcode, or ID are detected automatically but can be reassigned manually.
- Enable case and whitespace trimming to treat values like ABC-1 and abc-1 with trailing spaces as identical.
- Select keep last row when your spreadsheet is sorted chronologically so the newest pricing or stock level is retained.
How to use it
- 1 Drop your Excel or CSV file into the workspace.
- 2 Choose the primary key column to evaluate for duplicates.
- 3 Select whether to retain the first or last matching row and configure whitespace normalization.
- 4 Review the summary metrics and download the cleaned spreadsheet.
What you should know
Combining product catalog feeds, customer exports, or inventory sheets frequently introduces duplicate entries with conflicting data. Standard spreadsheet deduplication often compares entire rows, failing when trailing spaces, minor case differences, or mismatched secondary columns prevent an exact match. E-commerce platforms such as Shopify, WooCommerce, or regional marketplaces like Trendyol reject duplicate SKUs or silently overwrite previous entries, resulting in lost variations or corrupted inventory counts. Isolating a single authoritative key column, such as a barcode or universal product code, prevents duplicate imports before syncing catalogs across fulfillment channels and point-of-sale systems.
This tool identifies duplicates based on a single selected column rather than whole-row matching. You can sanitize values by ignoring case and stripping surrounding whitespace, and choose whether to retain the first occurrence or the most recent record. Rows with blank key values are preserved by default to avoid deleting unindexed products. Live statistics display retained, removed, and empty-key row counts before you export. All parsing and data handling execute locally in your web browser via client-side JavaScript, ensuring confidential inventory and pricing data never leave your device.
Frequently asked questions
Can I deduplicate based on multiple columns simultaneously?
This tool matches duplicates against a single designated column. To deduplicate by a composite key like SKU and warehouse location, create a combined helper column in your spreadsheet before importing.
Which record is kept when duplicates are found?
The first occurrence is preserved by default. If your file is sorted chronologically with recent updates at the bottom, switch the setting to keep the last row instead.
What happens to rows where the key column is empty?
Rows with empty key cells are not treated as duplicates of each other and remain untouched. You can toggle the blank-key option to remove them if your system requires complete records.
Guides
Articles and format references related to this tool.
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