Duplicate Line Remover

Paste a list and keep only one copy of each line. It is the quickest way to dedupe email lists, keywords, URLs or spreadsheet columns without formulas.

How to use the Duplicate Line Remover

  1. Type or paste your text into the box on the left.
  2. Adjust the options above if you need to. The result updates as you type.
  3. Click Copy result or Download to use your result.

What you can use it for

  • Dedupe email or contact lists
  • Clean keyword and URL lists for SEO
  • Remove repeated rows copied from spreadsheets

Private by design

The Duplicate Line Remover runs entirely in your browser. Your text and files are never uploaded or stored on a server, so it is safe for work documents and personal information. It is free, with no sign-up and no limits on how often you use it.

Frequently asked questions

Does it keep the original order?

Yes, by default the first copy of each line stays where it was. You can sort A to Z or Z to A instead.

Are "Apple" and "apple" duplicates?

Only if you tick "Ignore case". Otherwise they count as different lines.

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