I stumbled across this easy-to-do way to add your Pinterest feed to your Facebook page – and – you don’t have to know any code – and – it’s FREE!
Here are the easy-to-do steps:
First, when you’re logged in as the admin of your Facebook Page, add the static iFrame tab and allow it to access to your Page.
When you have the app installed, go back to your Facebook Page and you’ll see that you have a tab titled ‘Welcome’ on the left-hand side of your page. You might have to click on “see more” in order to find the welcome tab. Once you find it, click on it and then authorize the app to get started.