What this tool checks
Jaccard similarity measures shared unique five-word phrases divided by all unique phrases across both passages. This does not search the web or academic databases and cannot certify originality.
Read the methodologyCompare two texts using shared five-word phrases. Clear results, without invented sources.
Your text stays on this device. Nothing is uploaded or saved.
Jaccard similarity measures shared unique five-word phrases divided by all unique phrases across both passages. This does not search the web or academic databases and cannot certify originality.
Understand the method before making your next edit.
Jaccard similarity measures shared unique five-word phrases divided by all unique phrases across both passages. This does not search the web or academic databases and cannot certify originality.
Read the methodologyPaste your text or load a UTF-8 TXT or Markdown file. Each passage supports up to 20,000 characters. Try an example to explore the rules before checking your own work.
Review each observation in context. Copy, export, or print your report when you’re ready.
These are deterministic English-language heuristics. They can miss problems and flag intentional choices. Results do not establish authorship, originality, or factual accuracy.
No paid model, search engine, or external citation database is called.