CSV Deduplicator
CSV Deduplicator.
Remove duplicate rows from CSV, optionally by key column.
Your files never leave your device
Processing… 0%
Options
What it does
Remove duplicate rows from CSV, optionally by key column.
Why use it
CSV Deduplicator helps you deduplicate csv online in your browser — fast, private, no upload required.
Example input
name,email Alice,alice@example.com Alice,alice@example.com Bob,bob@example.com
Example output
name,email,signup_date Alice,alice@example.com,2024-01-15 Removed 1 duplicate row
Frequently Asked Questions
Is my data uploaded when using CSV Deduplicator?
No. All processing runs locally in your browser. Your files never leave your device.
Do I need an account?
No account is required. All tools are free and work instantly.