| Quick answer: You can add a digital signature to a PDF with a certificate-based tool or a cloud eSignature platform, and which one fits depends on whether you’re signing a single document or running a repeatable business workflow. The two terms get used interchangeably even though they rely on different technologies, which is part of… Read more → The post How to add a digital signature to a PDF in 4 steps appeared first on airSlate SignNow Blog | eSignature tools for every business . |