Great article by Lindsay Kolowich from Spredfast and published at Hubspot that can help a lots of marketers that need to adapt images for every social platform
When you're selecting cover photos, shared images, and other social media assets, knowing the basic image dimensions might not cut it. What if you want to make sure a certain part of your cover photo isn't obstructed by your profile photo? And what's the difference between shared link thumbnails, or in-stream photos -- are the dimensions different for those?
But if you're looking for a detailed guide on social media image sizes, you're in luck -- this infographic from Spredfast has you covered. It's a valuable resource to keep on-hand for the next time you're designing or selecting visual content for your social channels. And for quicker reference, scroll down to see a written list of essential social media image dimensions.