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Duplicate Line Remover
Paste a list and remove every repeated line, keeping only unique entries. Shows how many duplicates were removed.
✓ Free
✓ Instant
✓ No Signup
Result (0 duplicates removed)
Result will appear here...
Clean up lists in one click
Duplicate lines appear whenever you merge keyword lists, email lists, product exports or log files. This tool keeps the first occurrence of each line and removes the rest, preserving the original order.
Case insensitive mode treats Apple and apple as the same line, which is usually what you want for emails and keywords.
Common uses
- Cleaning SEO keyword lists exported from several tools
- Deduplicating email or contact lists
- Tidying spreadsheet columns pasted as text
- Removing repeated entries from log output
💡 Tip: Sort your list first with the Text Sorter if you also want it alphabetical.
Frequently Asked Questions
Does it keep the original order?
Yes. The first occurrence of each line stays in its original position.
What does case insensitive mean?
Lines that differ only by capitalisation are treated as duplicates.
Is my text saved or sent to a server?
No. Everything runs locally in your browser with JavaScript. Your text never leaves your device and we never see it.