How to create certificate in a downloadable PDF??

Hello Community,

I was trying to create a completion certificate at the end of my course and i was trying to execute a java script so learners can directly print their certificate. But the print page comes up with all the player layout. So it came to my mind that why not just make the certificate slide downloadable. Now I am stuck on mid way. I tried looking up on web but could not find any help.

Can any one help me with this dilemma.

Merci!