ContentGuard AI

ContentGuard AI

ContentGuard AI is a free browser tool that combines AI content detection, plagiarism, grammar checks, readability, and citation output.

free
AI detectionplagiarism checkergrammar checkerreadabilitycitation generatorfree toolwriting analysisstudent tool
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3.7 (0 Number of reviews)

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What ContentGuard AI Does

ContentGuard AI is a free, browser-based writing analysis tool that runs without signup. Users can paste text or upload PDF, DOCX, or TXT files, and the tool returns a report covering AI detection, plagiarism matches, grammar, readability, and citations.

Detection and Analysis

  • AI content detection against outputs from ChatGPT, Claude, and Gemini, using perplexity and burstiness signals per the site.
  • Plagiarism matching that highlights sentences with their sources.
  • Grammar, spelling, and readability scoring with sentence-level breakdowns.
  • Citation generation in APA, MLA, Harvard, and Chicago formats.

Who It Fits

Writers, students, editors, and content teams who want a quick second opinion on originality and quality without setting up an account. The site states documents are not stored and content stays private during the session.

Pros & Cons

Pros

  • Free to use with no signup and no document storage on the server per the site
  • Bundles AI detection, plagiarism, grammar, and citations in one flow
  • Accepts pasted text plus PDF, DOCX, and TXT uploads

Cons

  • Statistical AI detection can misclassify heavily edited human writing
  • Hosted on a Cloudflare Workers subdomain rather than a branded domain, so trust must be established by each user

Frequently Asked Questions

Is ContentGuard AI free?

Yes, the site states it is free forever and requires no signup.

What files can I upload?

You can paste text directly or upload PDF, DOCX, and TXT files.

Which AI writers does it try to detect?

The site reports detecting content from ChatGPT, Claude, and Gemini using statistical markers.

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