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Remove Duplicate Lines
Paste your list and deduplicate by line with flexible rules. Keep order or sort, then copy or download the result.
Input
Lines: 0
Chars: 0
Ready
Auto update
Output
Input 0
Unique 0
Removed 0
FAQ
Q
Can I keep the original order?
Yes. Choose “Keep input order” to keep the first appearance and preserve order.
Q
Does it distinguish uppercase and lowercase?
Toggle “Case sensitive” to decide whether A and a are treated as different.
Q
Can I ignore leading/trailing spaces?
Turn on “Ignore leading/trailing spaces (trim)” for comparison.
Q
Are empty lines removed?
Enable “Remove empty lines” to drop blank or whitespace-only lines.
Q
Is my data uploaded anywhere?
No. Everything runs locally in your browser.