It’s 672 width and 372 height. I’m not a fan of the image size at all. I’m having to photo edit to make it work.
1.) The featured image works best with landscape images not portrait.
2.) I’m trying to make it the images nice enough to be pinned on Pinterest. This doesn’t work well.
3.) I’m opting not to use a Featured Image at all on some post because it simply doesn’t work and that leaves the background as white. It doesn’t look too bad.
It would be nice if there was a centering solution for the featured image setting. I hope this helps you.