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