apply digital signature to pdf file

That's not a good idea. A single digital signature applies to the entire file. There's no need to sign each individual page.

To do so you can use a Signature field (which you can add using the addField method in JS), and then the signatureSign method to sign it.

For the process to be entirely automated you must run the code from a privileged context, know the path to the signature profile file and the password for it, though.

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

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