Everything at a glance
For every signature you see who signed, when, whether the document was changed after signing and whether those changes were allowed, such as filled-in form fields.
Verify PDF signatures
See who signed a PDF and when, whether it was changed afterwards and if the signature is qualified
Free
Online
No limits
Secure
😀 100% free thanks to advertising
Information
Windows Linux MAC iPhone Android
Qualified signatures (eIDAS)
Certificates are checked against the EU trust list, so qualified electronic signatures and seals under eIDAS are recognized, with their provider and country. Timestamps and embedded validation data (PAdES B-T to B-LTA) are checked as well.
Revocation on request
On request the tool asks the certification authorities whether a certificate was revoked (OCSP or revocation list). The result of the check can be printed or saved as a PDF report.
We care about security
This app does not store your files longer than necessary on our server. Your files and results are completely removed from our system shortly after processing.
Developed by Stefan Ziegler