How to sign a PDF on laptop—do I need an electronic or digital signature?

Hi everyone,

I need to sign a PDF on my laptop, but the different signing options are a little confusing. Some guides explain how to type a name, draw a signature, or upload a signature image, while others mention certificates and digital signatures.

If I add a handwritten signature to a PDF, is that considered an electronic signature? How is it different from digitally signing a PDF, and how would I know which one a document requires?

I’d appreciate suggestions for tools that can electronically sign a PDF and tools for adding a digital signature. Is there one application that supports both, so I can choose whichever is needed?

Ideally, I’d like to sign a PDF for free and sign a PDF offline without uploading it, since some documents contain personal information.

Any advice or suggestions would be appreciated. Thanks for your help!