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Remove Duplicate Words

Remove adjacent duplicate words from any text instantly in your browser.

Tool workspace

Deduplication runs in your browser. Nothing you paste is sent to our servers.

How it works

Paste or type text into the input. The tool splits text into words with the same Unicode whitespace rules as the Word Counter, then removes only adjacent duplicate words (for example `the the` → `the`) while preserving order.

Comparison is case-insensitive; the first original casing is kept. Remaining words are rejoined with a single space. Non-adjacent repeats are kept on purpose—this is safer than stripping every later occurrence of a word across the whole text.

Punctuation attached to a token stays with that word (`hello,` and `hello` are different). Empty input produces an empty result—no error. Processing runs entirely in your browser.

Examples

  • the the cat → the cat
  • Hello hello HELLO world → Hello world
  • the cat the dog → the cat the dog (non-adjacent kept)
  • Café café done → Café done
  • (empty or spaces only) → (empty)

Privacy

Privacy: this tool processes text locally in your browser. We do not log or store what you paste. Login is not required.

FAQ

Is my text uploaded to a server?

No. Duplicate-word removal runs entirely in your browser. Pasted content is not sent to Nova Engine.

Do I need an account?

No. All published tools work for guests without login.

Adjacent only, or every duplicate word?

Adjacent only by default. Repeated words that are not next to each other stay in the result.

How are words compared?

Each whitespace-separated token is compared case-insensitively. The first original token text is kept; an immediately following match is dropped.

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