There's nothing more frustrating than putting together the perfect blog post, and then excitedly sharing it to Facebook only to find that a funky image appears. Maybe it's a distorted version of your logo, or a random image from your footer--whatever it is--it's NOT an image that will beckon folks to read your blog.
So what do we do?
Facebook does its best to pull a relevant image. It looks for the first image that is over 541 pixels wide.
Huh? Pixel-what? Is that like an inch or a mile? Or a magic fairy?
541 pixels is just over 7.5 inches. Don't have a ruler handy? It's about the length of an iPhone 6 (the regular, not the mega).
You said over 541. Does that mean I can just use images that are 3000 pixels wide and hope for the best?
No. Facebook has mass amounts of data to store, so it's going to go for the realistically sized image and will ignore anything that is so big it should be a background image.
Do I have to figure this out every time I want to blog?
No. Figure it out once and use this image every time you blog.
Will people get bored?
Yes. But few business owners have blog-itis, so if you're only blogging once a quarter (or worse--once a year), the consistent visual messaging will be welcomed by your fans.
Can't I just make my logo show up there?
Yes. Plug your logo into a graphic that is 541x541, save, and upload into your blog post.
But I don't want to deal with this every time.
Ok... depending on your website platform, you may be able to upload your logo at the 541 size. Test this out by posting to your mom's timeline before telling your fans.
Anything else I should know?
Facebook has a good memory. It stores stuff. You may need to re-create your blog post if you make a mistake.
And Facebook is fickle. If things don't look right, do a Google search to see if the Facebook Share Image dimensions have changed! Google: Facebook Dimensions.