🧼 Duplicate Word Remover

📝 Text Input

Duplicates will be detected and removed automatically

⚙️ Processing Options

⚡ Quick Actions

📊 Processing Statistics

Original Words
{{ stats.originalWords }}
Unique Words
{{ stats.uniqueWords }}
Duplicates Removed
{{ stats.duplicatesRemoved }}
Reduction
{{ stats.reductionPercentage }}%

✨ Cleaned Text (No Duplicate Words)

{{ outputText }}
{{ stats.uniqueWords }} unique words ({{ stats.duplicatesRemoved }} duplicates removed)

🔍 Duplicate Analysis

{{ duplicate.word }}
Found {{ duplicate.count }} times

✨ Cleaned Text

Enter text above to remove duplicate words...

⚠️ {{ error }}

ℹ️ About Duplicate Word Remover

Duplicate Word Remover turns pasted text into a unique word list for keyword cleanup, tag lists, vocabulary work, prompt terms, and quick text preprocessing. It removes repeated word tokens while keeping the first displayed occurrence, or it can sort the unique words alphabetically.

The tool splits input on whitespace, compares each token, and removes later matches. By default, matching is case-insensitive, so Apple, apple, and APPLE count as the same word. Enable case-sensitive comparison when capitalization should create separate entries.

Example: apple banana apple cherry banana becomes apple banana cherry. With punctuation removal enabled, hello, hello! becomes hello, because punctuation is ignored for matching but the first original token is preserved in the output.

Good uses:

  • Deduplicating SEO keyword lists before import
  • Cleaning repeated tags, labels, and metadata fields
  • Building a compact vocabulary list from notes or source text
  • Preparing word lists for frequency checks, sorting, or diffing
  • Finding the most repeated terms in the duplicate analysis panel

Options:

  • Preserve order: keep the first occurrence of each unique word token.
  • Sort results: alphabetize the deduplicated list after comparison.
  • Case sensitivity: choose whether Word and word match.
  • Punctuation handling: ignore punctuation for comparison while preserving the first display form.
  • Output format: return words separated by spaces, one per line, or comma-separated.

Limitations: this is a deterministic text-cleanup tool, not a full natural-language tokenizer. It treats whitespace as the token boundary and uses JavaScript regular-expression character classes for punctuation cleanup, so contractions, hyphenated terms, emoji, and languages that do not separate words with spaces may need manual review.

For language-aware word-boundary behavior, see Unicode Standard Annex #29. For the regular-expression character classes behind whitespace and word-character matching, see the ECMAScript specification.

Privacy: the interactive cleanup runs in your browser. Use the API example only when you intentionally want to send text to the server-side endpoint.

API Usage Example:

POST /api/tools/text/duplicate-word-remover
Content-Type: application/json

{
    "text": "apple banana apple",
    "caseSensitive": false,
    "removePunctuation": true,
    "sortResults": false,
    "outputFormat": "spaces"
}
Ready