Learn

How PDFs hide text, why hidden instructions are aimed at AI reviewers, and how to check a file for both. Plain explanations of the mechanisms this scanner detects.

• Hidden Prompts in Academic Papers: What Was Found, and What to Check Before You Review

  Instructions aimed at AI reviewers, hidden in papers — some planted by authors, some by the conference itself. How to tell the two apart before accusing anyone, and how to check a manuscript in under a minute.

  July 27, 2026

• Hidden Text in PDFs Exported from Word and Google Docs

  Where invisible text in an everyday exported PDF actually comes from — covered text, white fills, off-canvas objects, tracked changes — and how to find it before you send the file.

  July 27, 2026

• Embedded JavaScript and Attached Files in a PDF: What They Actually Do

  A PDF can carry scripts and whole files inside it. What runs where, why your browser is stricter than Acrobat, and how to judge a finding without assuming the worst.

  July 27, 2026

• You Found Hidden Text in a Candidate's Résumé. Now What?

  A practical policy for the hiring side — how to tell keyword stuffing from an instruction aimed at your AI screener, which findings are innocent artifacts, and how to check every candidate the same way.

  July 27, 2026

• 10 Places Text Can Hide Inside a PDF

  A tour of the ten places a PDF can keep text or payloads off the page while leaving it readable to software — and how to spot a deliberate one.

  July 7, 2026

• The White Font Résumé Trick — and Why It Backfires

  Padding a résumé with invisible white text to fool keyword filters used to work. Against modern AI screeners, it now backfires more than it helps.

  June 30, 2026

• PDF Prompt Injection: Hidden Instructions Aimed at AI Reviewers

  How authors hide instructions inside a PDF to steer the AI tools that read it — the mechanism, who it targets, and how to detect it.

  June 16, 2026

• How to Check a PDF for Hidden Text

  Practical ways to find text that a PDF hides from your eyes but keeps readable to software — from a quick Ctrl+A test to a structural scan.

  June 2, 2026