Remove Duplicate Lines
Find and delete duplicate lines to clean up your text.
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∞ No limits
About Remove Duplicate Lines
Find and delete duplicate lines to clean up your text. It runs entirely in your browser — no content you enter is ever sent to our servers or stored anywhere.
Free to use with no daily limits and no account required.
❓ Frequently Asked Questions
Yes — the first occurrence of each line is kept and subsequent duplicates are removed, preserving the original order.
By default, no. Check "Case sensitive" to treat "Apple" and "apple" as different lines.
Only exact character-for-character matches. Lines with different punctuation or spacing are treated as unique.
Cleaning up email lists, keyword research lists, CSV data, log files, and any dataset where duplicate entries cause problems.