Remove Duplicate Lines

Paste a list with repeated lines and get back a clean list — every line kept once, in order.

FREE TOOL · PRIVATE · NO SIGN-UP

The cleaned list below updates live as you type or change the options.

Lines in
0
Duplicates removed
0
Unique lines out
0

🧹 How to Use This Duplicate Line Remover

  1. 1.Paste your list. Emails, keywords, names, URLs, product codes — anything with one item per line.
  2. 2.Set the options. Turn on case-sensitive matching if "Apple" and "apple" should count as different lines; keep trim on to ignore stray spaces.
  3. 3.Check the counts. See exactly how many lines went in, how many duplicates were removed, and how many unique lines remain.
  4. 4.Copy the clean list. One click copies the result, ready to paste into a spreadsheet, a document or your app.

❓ FAQ

Is my text private when I use this duplicate line remover?

Yes. The cleaning happens entirely in your browser — your text is never uploaded, stored, or sent anywhere. You can close the tab and it's gone.

Does the order of my lines change?

No. The first occurrence of each line stays exactly where it was, and only the later repeats are removed, so your list keeps its original order.

What does the case-sensitive option do?

With case-sensitive matching on, "Apple" and "apple" count as different lines and both are kept. With it off, they count as the same line and only the first one is kept. The trim option ignores extra spaces at the start and end of each line when comparing.

Is this duplicate line remover free?

Yes — 100% free with no sign-up and no line limit. Clean a short list or a file with thousands of lines.