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Remove Duplicate Words

Delete repeated words from text, keeping the first of each, with optional case matching.

Free foreverRuns in your browserNo sign-up

About the Remove Duplicate Words

This tool removes repeated words from your text, leaving one copy of each unique word in its original order.

You can treat words as case-insensitive so that The and the count as the same word, or keep case sensitivity for exact matching.

It is useful for cleaning up keyword lists, tags and tidying writing where the same word was accidentally repeated.

Key features

  • Keep the first occurrence of each word
  • Optional case-insensitive matching
  • Preserves the original word order
  • Shows how many words were removed

How to use

  1. 1Paste your text into the box.
  2. 2Choose whether to ignore case.
  3. 3Click Remove duplicate words and copy the result.

Frequently asked questions

Does it keep punctuation?
Words are compared as whitespace-separated tokens, so punctuation attached to a word is treated as part of it. Clean the text first for looser matching.
Is the word order preserved?
Yes. The first time each word appears it is kept in place; later repeats are removed.
Is my text uploaded anywhere?
No. Everything runs in your browser, so your text never leaves your device.