Turnitin AI Detector & Checker

Scan essays with Turnitin AI detector and checker. Verify AI detection scores for ChatGPT, Claude, and Gemini before submitting.

Turnitin AI Detector & Checker is an academic integrity scanner and AI writing checker built for students, teachers, researchers, and professional writers. Check essays, research papers, and assignments for AI-generated patterns and review your Turnitin AI Similarity Index before final submission. Featuring an authentic feedback interface inspired by academic grading studios, this extension analyzes text cadence, sentence length uniformity (burstiness), Shannon token entropy, and formulaic AI language. 🔍 HOW TO DO A TURNITIN AI SCAN IN YOUR BROWSER Wondering how to check your paper for AI before your instructor runs it through Turnitin? 1. Click the Turnitin AI Detector & Checker icon in your toolbar, or open the Chrome Side Panel for side-by-side editing. 2. Paste your draft, grab text from your active Google Doc or Canvas tab, or highlight any text on a webpage, right-click, and select "Scan with Turnitin AI Detector & Checker". 3. Click "Run Turnitin AI Inspection" to instantly generate a 100% full-document similarity report. 4. Review your overall AI percentage score and inspect highlighted sentences to understand why specific phrasing triggered detection. ✨ KEY FEATURES • Turnitin-Style AI Similarity Index: Displays an overall percentage rating (0% to 100%) indicating the proportion of document text exhibiting machine-generated traits. • Authentic Sentence Highlighting: Flagged passages are highlighted in cyan with sentence-by-sentence confidence breakdowns and forensic reasoning. • Shannon Token Entropy (Perplexity Analysis): Measures information dispersion across vocabulary to detect predictable token choices characteristic of LLMs. • Burstiness Index (Sentence Variation): Evaluates sentence length variance. Human writers naturally vary between short punchy sentences and complex clauses; AI models output uniform cadence. • Formulaic AI Cliché Detection: Flags overused transitional crutches including "delve into", "plays a crucial role", and "testament to". • 100% Document Coverage: Intelligent sentence-batching analyzes complete papers and long documents without truncation. • Triple Inspection Views: Dedicated Full Page Studio, native Chrome Side Panel, and Quick Toolbar Popup. • Multiple Detection Engines: Built-in Linguistic Heuristics (offline & private), Chrome Built-in AI (Gemini Nano on-device), and optional Cloud Deep Scan (Gemini 2.5 Flash / GPT-4o-mini). • Privacy by Default: Text analysis runs locally in your browser. Papers are never stored, sold, or sent to developer servers. ⚖️ DISCLAIMER & COMPLIANCE Turnitin AI Detector & Checker is an independent analysis tool and is not affiliated with, endorsed by, or sponsored by Turnitin, LLC. "Turnitin" is a registered trademark of Turnitin, LLC. All product names, logos, and brands are property of their respective owners. AI detection scores are probabilistic indicators intended to guide revision and human review; they do not constitute definitive proof of authorship.