How to remove duplicate lines
- Paste your list or text, with one item per line.
- Choose options like Ignore case or Sort A–Z.
- Copy the cleaned list or download it as a text file.
About the Remove Duplicate Lines tool
Great for cleaning email lists, keywords, product codes, names and any data copied from spreadsheets. The first time each line appears is kept and later copies are removed, so your list stays in its original order unless you choose to sort it.
100% free
No limits, no watermarks and no sign-up.
Private
Your text stays in your browser — nothing is sent or saved.
Fast
No uploading or waiting in a queue. Results in seconds.
Works everywhere
Windows, Mac, iPhone, Android and Chromebook.
Frequently asked questions
Which copy of a duplicate line is kept?
The first one. Every later copy is removed, and the order of your list stays the same.
What does “Ignore case” do?
With it switched on, “Apple” and “apple” count as the same line, and only the first one is kept.
Can it handle very long lists?
Yes. Lists with hundreds of thousands of lines are processed in an instant.
Is my data private?
Yes. Your list is processed in your browser and never sent anywhere.