Button to register pinterest Pin it from database

Hello,
Please excuse me for spelling I am French.

I need your help about adding the Pinterest save button with images from my database,
is there any way to add html code using the information on this page: Pinterest Developers?

I’m really stuck at this stage, but it seems important to me that my clients can register on pinterest my creations.

If someone can help me?

Thank you

Have a great day

Nelly