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Check my paper for AI, free: step by step

Paste your paper or upload a Word or PDF file on the PaperCheck home page, press Check for AI, and sign in with Google. You get 5 free checks a week, up to 20,000 words each, with every flagged sentence highlighted.

Written by Adithyan, a student who builds PaperCheck. Last updated 2 November 2026.

Step by step

  1. Go to paper-check.me. Paste the text into the box, or use the upload box for a .docx or .pdf file.
  2. Press Check for AI. If you are not signed in, sign in with Google. Your text is kept while you do, so you do not paste it again.
  3. Wait for the result. Most papers finish within a few minutes.
  4. Open the highlighted sentences. Those are the ones that drove the score.

How to read the result

The score is the share of your words in sentences the detector flags. A high score with only a few paragraphs flagged is easier to fix than the same score spread across the whole paper. Treat it as an estimate, not proof: no detector can say for sure who wrote a text.

What to do if the score is high

Limits

5 free checks a week (they reset every Monday), up to 20,000 words each. The AI check needs at least 500 words to be reliable.

Common questions

Do I need an account?

A Google sign-in is needed to run a check. Your pasted text or file is kept through the sign-in.

How long can the paper be?

Up to 20,000 words per check.

Can I check a PDF?

Yes. You can upload a Word or PDF file or paste the text.

Check your paper: 5 free checks

More guides

PaperCheck is not affiliated with Turnitin, GPTZero, papercheck.in or papercheck.ai. Scores from any detector are estimates, not proof.