Remove Duplicate Lines
Paste any list or text to remove all duplicate lines instantly. Case-insensitive matching and whitespace trimming included.
Frequently Asked Questions
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The first occurrence of each line is kept. All subsequent duplicates are removed, preserving original order.
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Yes. Enable "Case insensitive" to treat "Apple" and "apple" as duplicates.
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No. Handles any number of lines instantly in your browser.
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Yes, completely free.