Remove Duplicate Lines
Paste a list and instantly remove all duplicate lines.
How it works
Paste a list of lines into the input box. The tool instantly removes all duplicate entries and returns only unique lines, preserving the original order. Optionally sort the output alphabetically.
Why use this tool?
Clean up email lists, keyword lists, product catalogs, or any data with repeated entries in seconds. Essential for data cleaning and deduplication tasks.
Frequently Asked Questions
Does it preserve line order?
Yes. By default, duplicate lines are removed while keeping the first occurrence and preserving the original order of the remaining lines.
Can I sort the output after deduplication?
Yes. Enable the sort option to alphabetically sort all unique lines after removing duplicates — useful for keyword lists and glossaries.
Is it case-sensitive?
Yes, by default. 'Apple' and 'apple' are treated as different lines. Enable case-insensitive mode to treat them as duplicates.
Is this free?
Yes, completely free. Paste your list and get unique lines instantly.
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