How to find duplicate orders in a csv before fulfilment
- Step 1Export the orders CSV — Download from Shopify, WooCommerce, or your OMS.
- Step 2Drop into CSV Duplicate Finder — Select Order ID as the key column.
- Step 3Review flagged rows — Duplicate rows are marked with a flag column. Identify which duplicates are errors.
- Step 4Resolve before despatch — Cancel or merge duplicate orders in your OMS, then re-export.
Frequently asked questions
Does this remove duplicates or just flag them?+
It flags them — all rows are kept and a duplicate indicator column is added. Use the CSV Deduplicator if you want duplicates removed.
Can I check duplicates on multiple columns at once?+
Yes. Select Customer Email and Product SKU together to find orders that are duplicate on both fields.
Is order data uploaded?+
No. Processing is in-browser only.
Privacy first
Processing runs locally in your browser with PapaParse. No file is uploaded — only metadata counters are saved for signed-in dashboard stats.