How do I combine product listings from multiple Excel files and remove duplicate SKUs?

Upload all your product Excel files to Deliteful and enter `sku` in the key columns field. The tool merges all files and keeps only the first occurrence of each SKU, with the full column set from all sources in the output.

Can I deduplicate customer lists from multiple sales channels?

Yes. Upload your channel export files and use `email` or `customer_id` as the deduplication key. The tool removes duplicate customer records across files and outputs one consolidated list.

Will orders that appear in both my platform and payment processor exports be deduplicated?

Yes, if they share a common identifier column like `order_id`. Enter that column name as the key, and the tool will keep only the first occurrence of each order ID across both files.

Does the tool work with exports that have extra or different columns?

Yes. The output includes the union of all columns found across all uploaded files. Extra columns from one source are preserved; rows from files that lack them will have blank values.

Deduplicate Excel Product and Order Files for E-commerce Teams

E-commerce teams pulling exports from multiple channels — Shopify, Amazon, wholesale portals, 3PL systems — end up with the same SKUs, orders, or customers duplicated across files. Consolidating without deduplicating inflates inventory counts, order totals, and customer metrics. Deliteful merges your Excel exports and removes duplicate rows on any key column, giving you one clean dataset per operation.

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Multi-channel e-commerce operations generate overlapping data constantly. A product exported from Shopify and from your 3PL will share SKUs. An order that appears in both your platform export and your payment processor export creates a duplicate line item in any consolidated report. Running a promotion analysis or reconciling inventory without deduplicating first produces numbers you can't trust — and errors that surface only after decisions have been made.

Deliteful handles cross-file Excel deduplication in three steps: upload your exports, specify the key column (e.g., `sku`, `order_id`, `customer_email`), download one clean file. All sheets from all uploaded files are merged before deduplication runs. The output preserves every column found across all files, with blanks for missing values — no data is silently dropped. For product catalog work, this means variant data from one file and pricing data from another can coexist in the same output row.

How it works

1
Upload your channel exports
Add all Excel files from your sales channels, inventory systems, or fulfillment platforms.
2
Enter your unique record identifier
Type the column name that defines uniqueness — `sku`, `order_id`, or `customer_email` are common choices.
3
Download the consolidated clean file
Get one Excel file with all duplicate rows removed and the full column set from every source.

Frequently asked questions

How do I combine product listings from multiple Excel files and remove duplicate SKUs?: Upload all your product Excel files to Deliteful and enter `sku` in the key columns field. The tool merges all files and keeps only the first occurrence of each SKU, with the full column set from all sources in the output.
Can I deduplicate customer lists from multiple sales channels?: Yes. Upload your channel export files and use `email` or `customer_id` as the deduplication key. The tool removes duplicate customer records across files and outputs one consolidated list.
Will orders that appear in both my platform and payment processor exports be deduplicated?: Yes, if they share a common identifier column like `order_id`. Enter that column name as the key, and the tool will keep only the first occurrence of each order ID across both files.
Does the tool work with exports that have extra or different columns?: Yes. The output includes the union of all columns found across all uploaded files. Extra columns from one source are preserved; rows from files that lack them will have blank values.

Create your free Deliteful account with Google and start deduplicating your channel exports into one clean master file.