Duplicate Line Remover
Delete repeated lines from text or code, with case and whitespace options.
Options
Input
- Characters:
- 0
- Words:
- 0
- Lines:
- 0
Output
- Characters:
- 0
- Words:
- 0
- Lines:
- 0
What Is the Duplicate Line Remover?
The Duplicate Line Remover is a free online tool that lets you delete repeated lines from text or code, with case and whitespace options. It runs entirely in your browser — your text and files never leave your device, so it's fast and private. There's nothing to install and no sign-up required.
How It Works
Using the Duplicate Line Remover takes seconds. Paste or type your content into the input area (or upload a file where supported), adjust any options to fit your needs, and the result updates instantly. You can then copy the output to your clipboard, download it, or clear everything and start again. Because all processing happens locally with JavaScript, it works offline once the page has loaded.
When to Use It
Reach for the Duplicate Line Remover whenever you need a quick, reliable way to delete repeated lines from text or code, with case and whitespace options. It's popular with writers, students, developers, marketers and anyone who works with text tools day to day. Bookmark it alongside the other Text Tools in our toolbox so it's always one click away.
Frequently Asked Questions
- Is the Duplicate Line Remover free to use?
- Yes. Every tool on the site is completely free, with no account, login or download required.
- Is my data private?
- Absolutely. The Duplicate Line Remover processes everything locally in your browser. Your text and files are never uploaded to a server, so your data stays on your device.
- Does it work on mobile?
- Yes. The Duplicate Line Remover is fully responsive and works on phones, tablets and desktops in any modern browser.
- Do I need to install anything?
- No installation is needed — it runs in the browser. We also offer an optional browser extension and mobile app for quick access to popular conversions.
Last reviewed: 2026-06-27