Remove the digital certificate from the PDF

The Remove Certificate Sign feature allows users to remove digital signatures from PDF documents to modify or re-sign the documents. This is useful for users who need to modify or re-sign digitally signed PDF documents. For example, in legal documents, users may need to modify digitally signed contracts or agreements and then re-sign them; in enterprise document management, users may need to update digitally signed documents and then re-sign them. Additionally, this feature can be used to remove old signatures from PDF documents to add new signatures or timestamps. By removing certificate signatures, users can ensure the flexibility and modifiability of PDF documents and easily manage and distribute them.