An SSL Story: how to fix preview thumbnails not showing on Facebook and Twitter from your website pages

Freely-usable via Unsplash.

I have a website, and recently, when I went to Facebook to paste a link to a post from it, I was horrified to see that my post did not have a preview image.

I’ve seen this happen before. Sometimes, I would just backspace my link out and then paste it back in, and the thumbnail would…