Text cleanup
Duplicate line remover
Clean lists, logs, and exports by collapsing repeated lines without sorting.
Processed in your browser — nothing is uploaded
Walks lines top to bottom and keeps the first time each exact line appears, including blank lines as their own key.
Last reviewed 2026-09-10.
FAQ
Questions, answered
Is comparison exact?
Yes. Trailing spaces make lines different. Trim first if you need that.
Does it sort?
No. Order of first appearance is kept. Use the sort tool if you want alphabetical.
Does my text leave the browser?
No. The duplicate line remover runs in JavaScript on this page. Your paste is not uploaded.
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