BizSugar.com › Social Media › Facebook, Twitter, Instagram, LinkedIn, Pinterest – Social Media Image Size Guide - infographic

Every social network has their own guidelines for image sizing - from Facebook to Pinterest, each one has specific dimensions that you need to adhere to if you want your images to look the best they can.
The following infographic from SumAll provides the up-to-date dimensions for images for all the most used social media sites: Facebook, Instagram, Twitter, LinkedIn and Pinterest.