would perchance this could also work for links like zap.cooking or nostrapps.com

or is this designed using a special nip, could i have the choice of inputting a npub or a link? 

 it wouldn't work with what i made. what i made was specifically for nostr npubs. you can create your own for URLs  and other things here:

https://www.qr-code-generator.com 

 Ty, I was trying to use Nostr toys. I will use this as well ty xoxo learn something new today