Remove Duplicate Lines
Remove duplicate lines from text. Options for case-sensitive matching, trimming whitespace, and sorting output.
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Frequently Asked Questions
How does duplicate detection work?▾
Each line is compared to all other lines. If two lines are identical (based on your settings), only the first occurrence is kept.
What does "case-sensitive" mean?▾
When enabled, "Hello" and "hello" are treated as different lines. When disabled, they are treated as duplicates.
What does "trim whitespace" do?▾
When enabled, leading and trailing whitespace is removed from each line before comparison. " hello " and "hello" would be considered duplicates.
Is my data secure?▾
Yes, all processing runs in your browser. No text is sent to any server.