I just noticed Pinterest created a feature to disable pinning on any and/or all pages on your site. All you do is add this “meta” tag to the header of the pages you want to disabled pinning on.
Now any time tries pinning an image on the page via the bookmarklet or by adding it by URL on Pinterest.com, it’ll popup a message like:
“This site doesn’t allow pinning to Pinterest.”
Note any “Pin It” button on the page will still work. We’ll have an update soon that will address hiding the button on a per page/post basis.
See the explanation from Pinterest for more details.
In WordPress you can use our Pinterest Block plugin to insert this code for you.