PDF Signature Checker

Verify digital signatures in PDF documents, check document integrity and signature validity.

Note

This tool performs basic signature checking. For legal or business purposes, please use professional PDF validation tools.

Select PDF File

Select a PDF document to check digital signatures

Drag PDF file here

Or click to select file

User Guide

Supported Features

  • • Check PDF digital signatures
  • • Verify document integrity
  • • Display signer information
  • • View certificate details
  • • Verify signing time

Signature Types

  • Certification Signature: Locks all document content
  • Approval Signature: Locks specific parts only
  • Visible Signature: Shows signature appearance
  • Invisible Signature: Contains signature data only