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Remove Duplicate Lines
Paste a list and remove all duplicate lines instantly. Case-sensitive or case-insensitive matching.
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How to remove duplicate lines
Paste your list into the left box above. Duplicate lines are removed automatically and the result appears in the right box. Click Copy result to copy it to your clipboard.
Options explained
- Case-sensitive matching — when enabled, "Apple" and "apple" are treated as different lines. Disable this to treat them as the same.
- Trim whitespace — removes leading and trailing spaces from each line before comparing.
- Remove empty lines — filters out blank lines from the result.
Common use cases
- Cleaning up email lists or contact exports
- Deduplicating CSV columns pasted into a text editor
- Removing repeated log entries
- Consolidating tag or keyword lists