Remove duplicate lines
Keep a clean list without repeated entries.
Processed on your device. Your files are never uploaded. · Free · No signup
Three steps. That’s all.
Paste one item per line and choose how duplicates are compared.
Adjust the options and review the result.
Copy or use the result directly.
A little more about this tool
Keep a clean list without repeated entries. Case-sensitive matching treats A and a as different. Whitespace rules can affect which lines are duplicates.
Why this tool is useful
- See the result immediately while keeping your text private.
- Use it for free without creating an account.
- Use the same focused interface on mobile or desktop.
Good to know
What should I know before using Remove duplicate lines?
Case-sensitive matching treats A and a as different. Whitespace rules can affect which lines are duplicates.
Does my input leave my device?
No. This tool processes your input in your browser. It does not send your files or entered content to a conversion service.
Do I need an account or a subscription?
No account, payment or subscription is required. Device memory and browser capabilities may limit large operations.