Remove Duplicate Lines
Remove repeated lines from a text block while keeping the original first occurrence order.
Remove Duplicate Lines tool
The tool keeps the first unique line and removes later duplicates. Original order is preserved.
Result will appear here.
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Privacy: processing runs locally in your browser. No text is stored or transmitted.
Paste line-based text, choose how duplicates should be compared, and remove repeated lines while preserving the first occurrence.
Examples
- Clean repeated email lists or keyword lists
- Remove duplicates while ignoring case
- Trim spaces before comparison for cleaner deduplication
FAQ
- What does this duplicate line remover do?
It removes repeated lines from your text and keeps only the first occurrence of each unique line.
- Can it ignore case differences?
Yes. You can treat uppercase and lowercase versions of the same line as duplicates.
- Can it trim spaces before comparing lines?
Yes. You can trim leading and trailing spaces before duplicate detection.
- Is my text stored?
No. Processing runs locally in your browser and no text is stored or transmitted.