Duplicate Text Checker
Compare two passages and see which phrases they share. Matching runs on word sequences, so common vocabulary alone won’t register.
0 words
0 words
Phrase length
Shorter catches more, and raises false positives.
Common questions
Does this search the web for copied text?+
No. It compares the two passages you paste and nothing else, so it cannot tell you whether either was published elsewhere. It is for checking two drafts against each other.
Why does it match phrases rather than words?+
Two honest articles on one topic share plenty of vocabulary. Sharing a run of five words in the same order is what actually signals copied text, so matching works on word sequences.