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Show JavaScript in a PDF

PDFs can contain JavaScript that runs when the file opens. This shows you that code before you trust the document, which is a sensible check on anything arriving from outside.

How to Show JavaScript in a PDF

  1. Upload the PDF.
  2. Run the inspection.
  3. Read any scripts that are found.

When you would use this

  • Checking a PDF from an unknown sender before opening it widely.
  • Auditing files before they enter a secure archive.
  • Understanding why a form behaves unexpectedly.

Questions

Is JavaScript in a PDF always malicious?

No. Forms legitimately use it for validation and calculation. Seeing the code lets you judge.

What should I do if I find something suspicious?

Run Sanitize PDF to strip the scripts, and do not open the original in a reader that allows scripting.

Nothing was found, is that good?

It means no scripts are embedded, which is normal for most documents.

Need this at scale?

These tools handle one document at a time. When the job is thousands of files, Greenbooks handles document digitization as a managed service, including bulk scanning, OCR and metadata capture, with the output loaded into DocuVenta DMS. Talk to us about volume work.

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