Auto Actions add defer & async to my link

How could I do that if my method is JS (URL) in Auto Actions?

mk3 wrote: How could I do that if my method is JS (URL) in Auto Actions?

Do you even have Auto Actions?

You do not appear to be a subscriber.

Sure I have! I don't know why you don't see me in buyers list, but I have bought the professional set about 1 year ago.

mk3 wrote: Sure I have! I don't know why you don't see me in buyers list, but I have bought the professional set about 1 year ago.

Your 3 month Professional subscription expired 2017/03/28.

This means that you do not have the latest CB Auto Actions (many builds have been released since then) and any instructions you are given might not work on your version.

Well, for the moment I'm developping my website very slowly and all of my components are outdated, as I started about 1 year ago.... That wouldn't make sense for me to update, before I'm sure to be close to finish my project.
However answers you give are very helpful.
Also right now I have a probelm on this forum, as it gives an error message: I am forbidden to access the forum when I try to post a Topic.

How could I do that if my method is JS (URL) in Auto Actions?

You can't. Use Header method if your version has it available and you can specify the entire header HTML element where you'll be able to add those attributes.

Also right now I have a probelm on this forum, as it gives an error message: I am forbidden to access the forum when I try to post a Topic.

Most likely triggering mod_security. Our security is pretty heavy to avoid possible issues. Try to avoid putting large blocks of PHP, etc.. in posts.