A popular trend among bloggers right now is to hide their long images for social media (Pinterest) using the code.
This makes it so that when a reader clicks the Pin it browser button, the long image still shows up but is not displayed inside their post.
Also note that the alt description for Pinterest marketers are always keyword rich, board line keyword stuffed.
I've read this article from Google on hiding text and images https://support.google.com/webmasters/answer/66353?hl=en but not sure if this practice fits inside that scope.
What are your thoughts? Will this hurt SEO?