Support Information

PDFirma is a native macOS app for preparing, signing, and validating PDF documents with digital certificates.

If you need help with the app, certificate usage, signing workflow, or validation behavior, please contact support using the email address below.

Contact

Support email: pdfirma.app@gmail.com

What to Include in Your Message

• Your macOS version
• The PDFirma app version
• A short description of the issue
• Whether the issue happens while opening, preparing, signing, or validating a PDF

Privacy Policy

Please also review the Privacy Policy for information about data handling and network usage.