Remove Duplicate Lines — Free Online Remove Duplicate Lines

Paste a list and remove repeated lines instantly — plus sort A–Z, delete blank lines and trim extra spaces. Perfect for cleaning lists, emails, roll numbers and data.

The Remove Duplicate Lines is part of Toolio's Text & Web Tools collection — one of 64 free tools on the site. It is made for students, creators, office workers and anyone who needs a reliable remove duplicate lines without installing software or creating an account. It works on phones, tablets and computers, right in the browser.

How to use the Remove Duplicate Lines

  1. Paste your list or text — one item per line.
  2. Tick the clean-ups you want: remove duplicates, sort, remove blank lines, trim spaces.
  3. Copy the cleaned result or download it as a .txt file.

Remove Duplicate Lines — Frequently Asked Questions

Is this Remove Duplicate Lines free?

Yes — completely free. No sign-up, no account, no installation and no usage fees. Open the page and use it as much as you like.

Do my files leave my device?

No. This tool runs entirely in your browser using JavaScript — your files and text are processed on your own device and are never uploaded to a server.

Does it work on mobile?

Yes. Toolio is built mobile-first, so the Remove Duplicate Lines works in any modern phone browser — Android and iPhone — as well as on tablets and desktop computers, with nothing to install.

Related tools