What is PortableSigner?
PortableSigner is a handy and easy-to-use portable application designed to help you apply digital signatures to PDF documents as well as Office files, without requiring administrator privileges on the computer.
This utility enables you to digitally sign files using keys and certificates stored on crypto-tokens and smart cards. It's focused on providing signature features, without dealing with other PDF manipulations.
Since it's portable, PortableSigner can be run from removable drives whose contents can't be altered by untrusted hosts. This makes it useful for applying trusted signatures when using public computers.
The intuitive interface allows you to quickly select the file you want to sign, choose the certificate to apply the signature with, set signing reasons and contact info, password-protect the document, timestamp it, and more.
Files signed with PortableSigner are compliant with the most widely adopted signature standards, including PAdES and XAdES, and can be validated using common software like Adobe Acrobat Reader.
Overall, PortableSigner delivers an easy way to digitally sign Office and PDF documents without needing to install additional tools or having admin access.