Certification projects are optional?

hello devs ,how you feel? the projects are optional ou nessary to get certification?

and i can send the projects to other server whats no codepen.io ? plz help me.

the projects are the only necessary part to get the certifications, all the other challenges are optional

you don’t have to use codepen, but you still need to have a version hosted somewhere publicly accessible, and also the code easily accessible. For this a service like codepen or repl.it works well without needing any extra set-up on your computer

Thanks for you reply!