text tool
Remove Duplicate Lines
Keep the first copy of each line and remove repeats. Files and text are handled in your browser whenever this tool supports it.
Unique lines only · no upload
Your result will appear here.
How it works
Give the tool one clear input. ArcaThread keeps the controls close to the result and explains what happens to your data.
Privacy by default
No account is required. When processing can happen locally, the file does not need to leave your device.