Remove Duplicates from List

Paste your list below to remove duplicate lines. Each line is treated as one item.

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Ignore case

Trim whitespace

Remove empty lines

Cannot be empty

Unique lines: Copy

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Remove duplicate lines utility

This online tool removes duplicate lines from your text. Paste a list with one item per line and instantly get a deduplicated result. The original order of first occurrences is preserved.

Options allow you to customize the deduplication:

• Ignore case: treats "Apple" and "apple" as the same item, keeping the first occurrence.
• Trim whitespace: strips leading and trailing spaces from each line before comparison, so " hello " and "hello" are considered duplicates.
• Remove empty lines: filters out blank lines from the output.

Common use cases for removing duplicates include:

• Cleaning data: remove repeated entries from CSV columns, log files, or exported lists.
• Email lists: deduplicate mailing lists or contact lists before sending.
• Programming: clean up lists of values, configuration entries, or test data.
• Content writing: identify and remove repeated keywords, tags, or phrases.

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