Online Plagiarism Checker

The tool analyzes input text or uploaded documents to detect content similarity against a broad corpus, including public web pages and academic sources. It provides an overall similarity score, per-source matches, and an exportable report suitable for submissions, reviews, or audits.
Users can paste text or upload common document formats (txt, pdf, docx). Results highlight matching sources with exact or near-exact passages and provide a downloadable report for record-keeping.
How it works conceptually: text is tokenized and compared against indexed sources using a combination of exact-match and fuzzy similarity methods. The algorithm aggregates matches by source, computes a total similarity percentage, and flags longer copied passages for easier review. Paraphrase detection is supported to a practical extent, with caveats noted in the report.
Audience and value: students, teachers, editors, and researchers benefit from rapid checks, provenance-aware reporting, and exportable results that support integrity reviews, revision guidance, and academic submissions. Unique value includes privacy-friendly checks without mandatory accounts, support for multiple file types, and a straightforward per-source report that can be shared with instructors or editors. Core features include input flexibility, source-by-source reporting, export options, and clear guidance on interpreting results. Use cases span assignment verification, manuscript screening, and content audits.