Supported PDF documents: PDF, PDF/A and PDF/X; unprotected and password-protected files (if the PDF file is password protected, the open or owner password of the PDF file must be supplied to open the file). Processing of a single file or batch processing of multiple files is supported. The application is fully macOS 13 Ventura compatible, native Apple Silicon architecture of new Macs is supported.
• Editing PDF metadata
• Setting access permissions of PDF files
• Digitally sign PDF files with document signing certificates
A digital signature can be used to authenticate the identity of the author and the contents of the PDF document. The signature stores information about the signer and the state of the document when it was signed. Once a PDF file was digitally signed, it is impossible to change the file without invalidating the signature. Because of this, it is always possible to check whether a document has been changed or not.
- certificates in the PKCS#12 (.p12, .pfx) format with up to 4096 bits encrypted private/public key pairs are supported (If the PDF file is password protected, the owner password of the PDF file must be supplied to digitally sign the PDF file).
PDF file passwords
PDF files support two different passwords - Open password and Owner password.
If an Open password is set, the PDF file cannot be opened without entering the Open password. The Open password causes the file to be opened with user privileges and only non-restricted features of the PDF file can be used. If no Open password is set, a PDF viewer opens the PDF file with user privileges without asking for a password. A PDF viewer asks for the Owner password when the user tries to use restricted features (usually printing or copying). So, the Owner password grants full access to the PDF file. If the author of the PDF file wants to set the Open password (for opening the PDF document or to restrict some features), the Owner password must be set first. If no passwords are set by the author of the document, there are no restrictions to open the PDF file and the user has the full access to the PDF file.
PDF/A and PDF/X files
PDF/A is an ISO standard for long-term preservation, these files are primarily used for archiving. PDF/X is an ISO standard for graphic content exchange, these files fulfill a series of printing-related requirements. Editing such files and using encryption cause the PDF to no longer comply with the PDF/A or PDF-X standard and the file will have attributes of a standard PDF file. Editing the file without encryption can be performed and the compliance will be preserved. (Note: Setting access permissions of PDF files requires encryption. All other editing features and signing can be used without encryption.)
What is new
• macOS 13 Ventura compatibility
• macOS 10.13 or later