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Plagiarism & AI Checker

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Detect AI-generated text and check originality with a free client-side plagiarism and AI writing detector.


A plagiarism and AI checker analyzes your text for AI-writing signatures and originality indicators. It helps students, content creators, and SEO professionals verify that their content reads as authentic human writing before publishing or submitting.

This tool evaluates four key metrics: sentence-length burstiness (how varied your sentence structure is), vocabulary diversity (ratio of unique words), phrase pattern originality (absence of common AI cliches), and sentence entropy (variety in how sentences begin). These signals are combined into a single Originality Score from 0 to 100.

All analysis runs entirely in your browser using statistical text analysis. Your text is never sent to a server and never stored, making it safe to check unpublished drafts and private documents.