Hello OnlyOffice Team,

I am a user of OnlyOffice Desktop Editors and I am very satisfied with the software. However, I would like to suggest a critical feature: the ability to digitally sign PDF files using a security token/smart card.

Currently, the "Signature" option under the "Protection" tab is available for DOCX files but is missing for PDFs. Since PDF is the standard format for exchanging signed official documents, I still have to use external software (like Adobe Acrobat) just to apply a signature.

Adding native PDF signing (PAdES standard) would make OnlyOffice a complete solution for my workflow. Thank you for considering this