What is Plag?

Plag is a plagiarism and AI detection platform that supports 129 languages and compares user documents against a database of more than 80 million academic articles. It identifies various forms of plagiarism, including copy‑paste, paraphrasing, improper citations, and AI‑generated content, and highlights them in distinct colors for easy review.

The tool provides a similarity index, a plagiarism risk score, and direct links to source references, allowing users to verify and correct citations. For students, the service offers free, detailed similarity reports and a quick, accurate assessment of potential plagiarism.

Educators can access a free plan that allows up to 20 documents per month, share results with students, and benefit from real‑time search against recently published web content. All uploaded files remain confidential and are not stored in public comparison databases.

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Plag's key features

AI plagiarism detection
129‑language support
Real‑time similarity search
80 million scientific articles
Color‑coded match highlighting
Source document linking
Citation verification and flagging

Plag use cases

Verify the originality of a multilingual thesis by scanning the manuscript against 80 million academic articles, automatically highlighting copied passages, providing similarity scores, and linking to the original sources for easy citation correction
Provide educators with a secure, confidential plagiarism audit of submitted student papers in 129 languages, including AI-generated content detection and a risk-score report to support transparent grading decisions
Assist research institutions in maintaining publication integrity by cross-checking draft manuscripts against a global database, generating detailed similarity reports, and offering real-time source reference linking for accurate bibliography management