Plagiarism Checker – Compare Text Similarity Free

★ 4.8

(215 votes)

Check similarity between two texts using n-gram Jaccard, TF-IDF cosine, and sentence matching. Find copied or paraphrased content. 100% private.

Text-to-text comparison only

This tool compares two texts you provide. It does not search the internet or databases. For web-based plagiarism detection (e.g. checking if content was copied from websites), use Copyscape, Turnitin, or Grammarly. Useful for: comparing drafts, checking student submissions against each other, verifying rewrites.

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100% private

Your texts are processed entirely in your browser. Nothing is sent to any server.

Limitations

Cannot detect plagiarism from the internet. Best for comparing two specific texts. Paraphrasing with synonyms may lower the score.