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Text Similarity Checker

Paste two passages and instantly see how similar they are. Choose n-gram size, ignore stopwords/punctuation, and highlight overlaps. All processing happens locally in your browser.

Text Similarity Checker
Client-side onlyFast & private

Input

n-gram size
Token filters

Off = case-insensitive

Remove , . ! ? ( ) …

the, a, to, of, …

Tip

Jaccard & Dice use your selected n-gram size. Cosine uses unigram term frequency to catch topical similarity. Levenshtein measures edit distance across whole strings.

Output

Similarity metrics
n=1 • Insensitive • No punct • Stopwords off
Jaccard (1-gram)50.0%
Dice (1-gram)66.7%
Cosine (unigram)66.7%
Levenshtein (normalized)60.4%
Overlap highlights (normalized view)
Text A

quickbrownfoxjumpslazydog

Text B

quickauburnfoxleapedlazydog

Tokens & Overlap
Tokens (A)6
Tokens (B)6
Unique tokens (A)6
Unique tokens (B)6
Overlap tokens (unigram)4
Overlap n-grams (1)4
Top common tokens
quick×2fox×2lazy×2dog×2

How to Use

  1. Paste your two texts into Text A and Text B.
  2. Pick the n-gram size (1=words, 2=phrases of 2 words, etc.) and adjust filters.
  3. Review the metrics and the highlighted overlaps.
  4. Copy Stats (JSON) or download a CSV summary for reporting.