How to Check PDF security settings

Use PDF.js locally on PDFs up to 20MB to report permissions, signature fields, document-level JavaScript, and embedded files. It does not validate or verify signatures.

4 min read PDF Security Checker Free, no signup required

Quick start

PDF Security Checker — Inspect local PDF bytes for security-related structural indicators.

Get started in under two minutes:

  1. Upload your PDF
  2. Run the structural scan
  3. Review the output
  4. Copy the result
Open PDF Security Checker

Step-by-step instructions

Follow these steps to get the best results from PDF Security Checker:

1

Upload your PDF

Click the upload area or drag and drop your PDF file.

Tip: If the PDF is password-protected, unlock it with the Unlock PDF tool first.
2

Run the PDF.js analysis

Select Analyze Security. PDF.js reports effective permissions, signature fields, document-level JavaScript, and embedded files.

Limitation: The tool does not validate or verify signatures and does not certify that a document is secure or safe.
3

Review the output

Check the result against what you expected. Look for any errors or unexpected output.

Tip: Verify the result before using it in production.
4

Copy the result

Click the "Copy" button to copy the output to your clipboard. The button briefly changes to "Copied!" to confirm the action.

Tip: Paste the result directly into your project, code editor, or document.
Open PDF Security Checker

Frequently asked questions

Is PDF Security Checker free to use?

Yes — PDF Security Checker is completely free with no account or signup required. All core features are available immediately.

What is the maximum file size supported?

PDF files up to 20MB are supported. Larger files are rejected before analysis.

Does this work on Mac, Windows, and Linux?

Yes — PDF Security Checker works in any modern web browser regardless of operating system. No installation or plugins required.

Does PDF Security Checker work on mobile devices?

Yes — PDF Security Checker works on smartphones and tablets through any modern mobile browser. The interface adapts to smaller screens automatically.

Ready to check PDF security settings?

PDF Security Checker is free to use. No account or signup required.

Open PDF Security Checker