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Remove Duplicate Lines - Free Online Duplicate Line Remover

Remove Duplicate Lines - Free Online Duplicate Line Remover

Remove duplicate lines from text with case-sensitive and whitespace trimming options

Text Tools

Remove Duplicate Lines - Free Online Duplicate Line Remover

Case sensitive

Trim whitespace

Enter your text

0 words · 0 chars · 0 lines

How to Use

1Paste your text into the text area (one item per line)
2Choose whether to use case-sensitive comparison
3Optionally enable whitespace trimming to treat " Hello " and "Hello" as duplicates
4The result shows only unique lines and how many duplicates were removed

Frequently Asked Questions

Yes, the first occurrence of each line is kept and subsequent duplicates are removed. The original order of unique lines is preserved.

When case-sensitive is enabled, "Hello" and "hello" are treated as different lines. When disabled, they are treated as duplicates.

When enabled, leading and trailing spaces are removed from each line before comparison. So " Hello " and "Hello" would be treated as duplicates.

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