Is the original order preserved?
Yes. The first occurrence stays in its original position.
Duplicate Line Remover
Remove repeated lines while preserving their original order.
Calculations happen locally. We do not send your values to our server.
Example
The lines Apple, Banana, Apple, Orange become Apple, Banana, Orange.
Calculation method
Lines are scanned from top to bottom. The first occurrence is kept and later matching lines are removed.
Important notes
Case-sensitive mode treats “Apple” and “apple” as different lines.
Frequently asked questions
Are blank lines treated as duplicates?
Yes. Repeated identical blank lines are reduced to one.
Can matching ignore uppercase and lowercase?
Yes. Disable case-sensitive matching.