Paste CSV with headers
Add the complete export containing repeated records.
CSV record cleaner
CSV Duplicate Row Remover
Choose a key such as email, ID, or SKU and keep the first record for every unique value. The output remains valid CSV with quoted fields preserved.
No upload Free to use Works on mobile
Data tool
CSV Dedupe
Options
Deduplicated CSV
0 resultsHow to use CSV Dedupe
Select the dedupe column
Enter the exact header name used to identify duplicates.
Export clean CSV
The first matching row is kept and duplicate records are counted.
Common uses
Contact cleanup
Deduplicate subscriber and customer exports by email.
Product catalogs
Remove repeated SKUs before importing inventory.
System migrations
Clean duplicate IDs from staged records.
CSV Dedupe FAQ
Is CSV Dedupe free to use? +
Yes. CSV Dedupe is free to use without an account or usage meter.
Is my data uploaded or stored? +
No. The processing for this tool runs locally in your browser. Entered content is not sent to our server.
Which duplicate row is retained? +
The first row encountered for each key is retained so the original file order remains meaningful.
Keep working
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