pdf-secrets — PDF Inspector & forensic metadata reveal

Reveal what is hidden inside any PDF: author and editor history, digital signatures, post-signing edits, embedded files, JavaScript, hidden text and forensic fingerprints.

Document forensics: creator tool, producer, document and instance IDs
Digital signature inspection with certificate chain and OCSP/CRL status
Detect modifications applied after a document was signed
Per-revision diff with text changes and page rotations
Hidden text and PDF/A compliance checks

What is pdf-secrets?

A forensic-grade PDF analysis tool that surfaces metadata, revision history, signatures and security signals that most PDF readers do not show.