One thing that irks me when I see brands posting the same content across multiple social media channels is when they don’t properly size the image for each channel. The Facebook news feed looks way different than Twitter and Instagram and even Pinterest.
Sprout Social has a tool you can use that will resize your image properly for each channel, including the header images.
Check out sproutsocial.com/landscape. It’s a great way to make sure your images aren’t pixelated or cut off. Nothing is worse than posting a pic and what shows up in someone’s newsfeed is just the crotch part of a model standing, when in reality it’s an awesome photo showcasing the model holding your product.