Social media profile dimensions are constantly changing. With every little tweak or page layout change for Twitter, Googleplus, Pinterest, Instagram Facebook, etc., social media managers must stay up to dated to get the most out of their social presence. When creating cover/profile images for brand pages, making sure you know the exact dimensions, is essential.
Here's an infographic from omnicoreagency, which will be your reference point when you are designing timeline or header covers or Facebook ads or a LinkedIn Company logo.
