Why Remove Duplicate Lines
- Removes exact duplicate lines while preserving first-occurrence order.
- Whitespace-only lines are kept untouched.
- Live, runs as you paste.
Common questions
Is Remove Duplicate Lines free to use?
Yes. Remove Duplicate Lines is completely free. There is no sign up, no trial, and no usage cap.
Do I need an account to use Remove Duplicate Lines?
No. You can start using Remove Duplicate Lines straight away. We do not ask for an email address or a login.
Is my data uploaded to a server when I use Remove Duplicate Lines?
No. Remove Duplicate Lines runs entirely inside your browser, so the text you enter never leaves your device and nothing is sent to us.
Do you store the text I use with Remove Duplicate Lines?
No. Because everything happens locally in your browser, there is nothing for us to store. Close the tab and it is gone.
Is there a character or word limit in Remove Duplicate Lines?
There is no fixed limit. Because Remove Duplicate Lines runs in your browser, only very large amounts of text may slow things down.
Does Remove Duplicate Lines keep my text private?
Yes. Your text is processed locally in the browser and is not sent to a server.
How do I use Remove Duplicate Lines?
Enter or paste your text and Remove Duplicate Lines updates the result as you go. When it looks right, copy or download it with one click.
Does Remove Duplicate Lines work on phones and tablets?
Yes. Remove Duplicate Lines is responsive and works in any modern browser on mobile, tablet, and desktop.
Which browsers does Remove Duplicate Lines support?
It works in current versions of Chrome, Firefox, Safari, and Edge. For the best experience, keep your browser up to date.
Is there a limit on how often I can use Remove Duplicate Lines?
No. You can use Remove Duplicate Lines as many times as you need, at no cost.
Can I use Remove Duplicate Lines for commercial or client work?
Yes. You are free to use the output in personal, educational, and commercial projects.
Why is Remove Duplicate Lines free?
The site is supported by advertising, which lets us keep every tool free and open to everyone.
What should I do if Remove Duplicate Lines gives an unexpected result?
First check that your text is formatted as expected. If something still looks wrong, use the feedback link on the page and we will take a look.