Ok, for some reason, now it doesn’t seemed to be cropped anymore. Like it uncropped itself without me doing anything.
It’s still blurry, though. The image size I’m using is 280 KB.
I notice that when I use the same image file on Facebook, say as a large cover picture, it looks fine, but when I put the homepage URL into a Facebook post, that same image is blurry. I guess that’s because Facebook compresses the file or something? Is there a way to get round that?