How do I remove duplicate SKUs from a combined Excel product catalog export?

Upload the workbook to Deliteful and enter 'sku' (or your SKU column name) in the column field. The tool removes all rows after the first occurrence of each SKU per worksheet and returns a clean file.

Can I deduplicate order exports that span multiple sheets by month?

Yes — each sheet is processed independently in a single upload. Duplicate order IDs within the same sheet are removed; deduplication does not run across sheets.

Will this remove duplicate customer emails from a mailing list export?

Yes. Enter 'email' as the key column and Deliteful will keep only the first row for each unique email address per worksheet.

Does the tool handle .xls files from older system exports?

Yes, both .xlsx and .xls formats are supported.

Remove Duplicate SKUs and Orders from Excel Exports

Product catalog exports, order reports, and customer lists pulled from Shopify, WooCommerce, or marketplace dashboards routinely contain duplicate rows — from overlapping date ranges, multi-channel merges, or manual additions. Deliteful strips these duplicates from every worksheet in your Excel workbook using a SKU, order ID, or email column, so your data is clean before you import, analyze, or reprice.

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E-commerce managers working across multiple sales channels face a specific deduplication challenge: the same product, order, or customer can appear in exports from Amazon Seller Central, Shopify, and a warehouse management system simultaneously. When these exports are combined into a single Excel workbook for analysis or upload to a repricing tool or ERP, duplicates inflate inventory counts, double-count revenue, and cause import errors. A single duplicated SKU in a bulk upload can overwrite correct stock levels.

Deliteful deduplicates every worksheet in an uploaded workbook in one pass. Specify 'sku', 'order_id', or 'email' as your key column and the tool removes all subsequent duplicate rows per sheet, keeping the first occurrence. If a sheet doesn't have that column, full-row comparison is used as a fallback. Output is a clean Excel file — values only, no formatting — ready for import or analysis.

How it works

1
Pull your export from Shopify, Amazon, or your ERP
Export your product catalog, order report, or customer list as an .xlsx or .xls file.
2
Upload to Deliteful
Upload the file — multi-sheet workbooks are handled in a single step.
3
Enter your key column
Type the column name (e.g., 'sku' or 'order_id') to deduplicate by that identifier.
4
Download and import the clean file
Download the deduplicated workbook and import it into your inventory system, repricing tool, or analytics platform.

Frequently asked questions

How do I remove duplicate SKUs from a combined Excel product catalog export?: Upload the workbook to Deliteful and enter 'sku' (or your SKU column name) in the column field. The tool removes all rows after the first occurrence of each SKU per worksheet and returns a clean file.
Can I deduplicate order exports that span multiple sheets by month?: Yes — each sheet is processed independently in a single upload. Duplicate order IDs within the same sheet are removed; deduplication does not run across sheets.
Will this remove duplicate customer emails from a mailing list export?: Yes. Enter 'email' as the key column and Deliteful will keep only the first row for each unique email address per worksheet.
Does the tool handle .xls files from older system exports?: Yes, both .xlsx and .xls formats are supported.

Create your free Deliteful account with Google and clean your catalog or order exports before your next import — no card required, ready in seconds.