I want to sign PDF documents with a legally valid signature
With a PDF certificate an 'advanced electronic signature' is placed on a PDF document. This is the second highest level digital signature on which the legality can be used for most appliances. The certificate is installed on secure hardware: when a lower amount of signatures is needed this is a PKI-token, with larger amounts an HSM is used.
SSLCheck
Our SSLCheck will examine your website's root and intermediate certificates for correctness and report any potential issues