Does this tool preserve the original line order?

Yes. Duplicate lines are removed while keeping the first occurrence in its original position.

Is the comparison case-sensitive?

You can toggle case sensitivity. When case-insensitive mode is on, 'Hello' and 'hello' are treated as the same line.

Yes! Toggle 'Remove blank lines' to strip all empty lines from the output.

Remove duplicate lines from text instantly. Keeps first occurrence, preserves order.

No signup. 100% private. Processed in your browser.

Case sensitiveRemove blank lines

Input (8 lines)

4 unique lines

apple
banana
cherry
date

Removed 4 duplicate lines

1

Paste your text with duplicate lines

2

Toggle case sensitivity and blank line options

3

Copy the deduplicated result

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Clean up whitespace

Count words & characters

Text case conversion

Compare two texts