Free Content Toolkit

Analyze, detect, and rewrite content entirely in your browser. No data leaves your device. No API keys. No subscriptions. Ever.

🔒 100% Private ⚡ Client-Only 📴 Works Offline 🆓 Always Free
✦ Available Tools
📝
Plagiarism Checker

Jaccard & Cosine similarity between sentences. Get a uniqueness score.

 🤖
AI Text Detector

Heuristic phrase patterns, burstiness & vocabulary analysis.

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Image Reverse Search

Extract hash, metadata & colors. Match against local mock dataset.
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AI Image Detector

Pixel noise, smoothness & resolution pattern heuristics.

 AI POWERED ✍
Content Rewriter

Synonym replacement, passive→active voice & humanizer engine.

 NEW ▶
YouTube Tools

Real title/desc/tags extractor, thumbnail downloader & SEO analyzer.
⚠ Disclaimer: ContentGuard Lite uses heuristic-based local analysis. Results are approximations and are not guaranteed to be accurate. Do not use as definitive evidence in academic, legal, or professional contexts.