We have the final board packet that must not be altered; certify the PDF so any later changes show as invalid and send…
Open the PDF document you want to certify in Adobe Acrobat.
Go to the Tools pane and select Protect.
In the Protect toolbar, click Certify with Visible Signature or Certify with Invisible Signature depending on your preference.
Drag to draw the signature field on the page if prompted for a visible signature, or confirm placement for an invisible signature.
In the dialog that appears, select your digital ID from the list or add a new one if necessary.
Set the Permissions options to control what changes are allowed after certifying (e.g., no changes, form fill-in only, or comments only).
Optionally, enter a reason for certifying the document.
Click Sign to apply the certifying signature.
Save the PDF when prompted to complete the certification process.
Best practiceIf you need to allow others to fill forms or add comments after certification, choose the appropriate restriction option before signing.
After certifying a PDF, Acrobat will display a blue ribbon in the document’s toolbar to indicate the document is certified and show any allowed changes.
This runs in the Acrobat app - there is no separate API for this task.
A regular digital signature can be applied to a PDF that already has other signatures. A certificate signature, however, can only be applied to a PDF that has no other signatures. It provides a higher level of trust and integrity for the document, indicating that the content is approved and has not been modified since certification.
You can get a Digital ID from a trusted third-party certificate authority, or you can create a self-signed Digital ID within Adobe Acrobat for personal use. For official or legal purposes, it is usually best to get one from a recognized certificate authority to ensure wider acceptance and trust.
A certificate signature is meant to establish the first and highest level of trust for a document. If other signatures were already present, it would be unclear whose signature holds primary authority or if the document was altered before certification. By requiring no other signatures, the certificate signature ensures that the certified version is the original, untampered document from its source.
The 'certify-ribbon icon' is a visual indicator on a PDF document. It means that the document has been successfully certified with a certificate signature. This icon quickly tells anyone viewing the PDF that its content is approved and has not been changed since it was certified.
Yes, for automating the sealing of many PDF documents, you can use the PDF Electronic Seal API. However, it's important to know that this API applies an organization's seal, not a personal certificate signature. This is suitable for bulk processing of documents that need an official organizational mark, but it's distinct from a person's digital ID used for individual certification.