FB debugger says that my og:image should be larger, even though it is large

Question

Check out this result of debugging an article using Facebook debugger.

It comes up with this warning:

og:image should be larger. Provided og:

Answer 1

If the image url is https:// and Facebook has problems reading your SSL certificate, it will produce this rather unhelpful error message. To test, see if a http:// url for the image works. If it does, your CA certificate may need some tweaking. Try Googling "Curl Error : SSL_CACERT SSL certificate problem: unable to get local issuer certificate"

Note: Even if your page has no problem displaying with a https protocol, Facebook digs deeper to confirm your identity. I think this is relatively recent. Considering their whole fake news debacle I'm not going to be too upset.