The 2016 Social Media Image Sizes Cheat Sheet [↗]
Social networks change the dimensions and formats of images frequently, and it can be difficult to stay updated with what is what. As you start to plan out your social media campaigns for 2016, it’s imperative that you optimize your personal and business’ social media profiles with the right image sizes if you want to stand out from the crowd.
It’ll probably be out of date soon, but nonetheless, it’s a good guide.