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Free online tool

Duplicate Line Remover

Remove repeated lines while preserving their original order.

About This Tool

The Duplicate Line Remover scans a block of text and strips out repeated lines, keeping the first occurrence and preserving your original order. It's a practical fix for messy lists — email lists with accidental repeats, keyword lists pulled from multiple sources, or notes copied from several documents that ended up with the same line twice. Paste your list, clean it in one click, and copy the result.

How It Works

  1. Paste your list of lines into the box — one item per line.
  2. The tool scans through and identifies any lines that repeat.
  3. Copy the cleaned list, now with every duplicate removed and original order preserved.

Use Cases

  • Cleaning email or contact lists before a mail merge.
  • Removing repeated keywords from an SEO keyword list.
  • Tidying up combined notes from multiple sources.
  • Developers cleaning duplicate entries in text-based data files.
  • Students merging research notes without repeating the same line twice.

Helpful answers

Frequently Asked Questions

FAQs for Duplicate Line Remover

A free tool that removes repeated lines from a block of text while keeping the original order intact.

Yes. You can use this tool online for free without creating an account.

Paste a list or multi-line text. Select Remove Duplicate Lines. Copy the cleaned list with its original order preserved.

No. The tool is available without registration or sign-in.

No. The tool processes your text in your browser and does not send it to our server.

By default, lines are compared exactly as typed, so "Apple" and "apple" are treated as different lines unless they match exactly.