Remove Duplicate Lines
Remove duplicate lines with options for case, whitespace, sorting and empty lines.
Files never leave your device Instant results 100% free No sign-up
How to use the Remove Duplicate Lines
- Paste or type your text into the editor.
- Choose the options you need — output updates live.
- Copy the result with one click or download as .txt.
Private & secure
Processing happens locally with JavaScript, Canvas and Web APIs.
No uploads, no storage, no account. Close the tab and it is gone.
Works on desktop and mobile in any modern browser.