Remove Duplicate Lines
Remove repeated lines automatically and show before/after line counts.
Case ConverterWord CounterRemove Duplicate LinesSort Text LinesRemove Empty LinesRemove Extra SpacesRemove Line BreaksAdd Prefix and SuffixFind and ReplaceDelimiter ConverterText Diff Checker
Input
Common examples
Operations
This tool updates results in real time and does not need extra parameters.
Results
Enter text to see live output.
FAQ
Does deduplication change order?
No. It preserves the original first-seen order.
Are empty lines treated as duplicates?
Yes. Repeated empty lines are also deduplicated.
Is it suitable for large text?
Yes for everyday bulk cleanup. Speed depends on text size and device performance.