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Duplicate Line Remover: strip duplicate lines from a text list
Paste your text list. Repeated lines get removed automatically, order stays intact.
Original list
Deduplicated
Your text never leaves this browser.
Why use this Duplicate Line Remover?
- Order stays intact. The first occurrence of each line stays put. Nothing gets reshuffled.
- Flexible options. Set case sensitivity and how blank lines get handled, your call.
- Private by design. Every step runs in your browser.
How to remove duplicate lines
- Paste your list, one item per line.
- Set case sensitivity, whitespace trimming, and blank line handling as needed.
- Watch the deduplicated result appear in the right column.
- Click Copy to copy the result to your clipboard.
When you need this tool
Email lists, contact lists, and keyword lists often pick up repeated entries after merging several sources.
Developers clean up log files or dependency lists with identical lines before further processing.
Frequently asked questions
Does the line order stay the same?+–
Yes. The first occurrence of each line keeps its position. Later repeats get removed.
What's the difference between case-sensitive and not?+–
With case-sensitive on, "Apple" and "apple" count as two different lines. Turn it off and both count as the same, with one removed as a duplicate.
Does leading/trailing whitespace affect duplicate detection?+–
With Trim whitespace per line on, leading and trailing spaces get ignored during comparison. "word " and "word" then count as the same.
Is my text uploaded to a server?+–
No. The whole process runs in your browser. Nothing gets sent to any server.