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Duplicate Line Remover
Remove exact duplicate lines while preserving the first occurrence. Case and whitespace are significant.
Processed in your browser. No uploads.
How to use Duplicate Line Remover
- Paste a list with one entry per line.
- Remove duplicates to keep the first occurrence of each exact line.
- Copy the cleaned list; different casing and whitespace remain distinct.
Example and limitations
A list containing “apple”, “banana”, “apple” becomes “apple”, “banana”. “Apple” and “apple” remain separate entries.
Are my files or text uploaded?
No. Processing happens in your browser. No account is required. Save your result before closing or refreshing the page.