What You Need to Know About Creating FB's Link Previews
Facebook's summer 2017 API changes affect how link previews work. Wanna customize your own? Here's a primer on what's new, and what you can do!
Feb 26, 2018 ... Facebook link previews don't look quite the way you want them to? ... like DNA, if you change the information in that code, Facebook will see those pages ... to take a boring ol' URL and transform it into a beautiful link preview.