Verify a SiteSign document

Check that a signed PDF from SiteSign is genuine and hasn’t been changed since it was issued. Your file stays on your device — only its digital fingerprint is checked.

Drop the PDF here, or tap to choose itSigned PDFs downloaded from SiteSign

How this works

Every signed PDF SiteSign issues gets a unique digital fingerprint, which we record. Changing anything in the file changes its fingerprint.
Copies are also digitally sealed. Adobe Acrobat Reader shows the seal in its Signatures panel and warns if the file was changed after sealing.
The last page of each copy is a signing certificate listing who signed, when, how and from which device.