Compare two texts side-by-side to detect identical phrases, paraphrase similarity, and citation gaps.
Compare an original text with a draft to review possible copied or paraphrased passages. The online analysis returns similarity estimates, sentence comments, and suggestions based on the two texts you supply.
Fast and easy from start to finish
Paste the original source in Document 1 and your draft in Document 2.
Run the comparison online.
Review matched passages in context and verify citations yourself.
What you can do with this tool
Two-document input: Paste a source passage and the draft to compare.
Similarity estimates: Review exact-match and semantic-similarity scores.
Sentence analysis: Inspect passages flagged as copied, paraphrased, or original.
Review guidance: Read suggestions for citation or revision.
File requirements, capabilities, and system limits
Both texts are sent to the online analysis endpoint. This is not an originality certificate or exhaustive plagiarism check.
Answers to common questions about Text Similarity & Plagiarism Diff Checker
No. The current endpoint compares only the two supplied texts. It does not run a web-wide plagiarism search.
No. AI-generated scores and sentence labels are estimates. Quotation, citation, shared terminology, and context need human review.
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