Remove Duplicate Lines

Remove duplicate lines from any text. Keeps the first occurrence of each line and removes all subsequent duplicates. Option to ignore case when comparing.

Runs locallyInstantPrivate
Input
Output
Text with duplicates removed will appear here…

How to Use

  1. Paste your text with duplicate lines.
  2. Toggle Ignore case to match lines regardless of capitalization.
  3. The cleaned text appears instantly in the Output panel.
  4. Once duplicates are removed, use the sort lines tool to alphabetize the result.

Related tools

Remove Extra SpacesCollapse runs of spaces and trim line ends.Remove Empty LinesStrip blank lines from pasted lists or logs.Remove EmojisStrip all emoji characters from text.Remove PunctuationStrip punctuation marks from text, with options to keep apostrophes and hyphens.