Came across the following info in an article from Kevan Lee on ideal image sizes for social media and thought others might find it of benefit. In general, here are the best sizes for sharing images on social media.
Facebook – 1,200 x 628
Twitter – 1,024 x 512
LinkedIn – 800 x 800
Google+ – 800 x 1,200
Pinterest – 735 x 1,102
Instagram – 1,080 x 1,080
If you’re going to take the time to post something to social media than be sure that it looks good. Follow the guidelines for the appropriate platform to improve your chances for some social media love. Social media can be tricky, so be sure to give them what they want.
To read Kevan’s full article go here – https://blog.bufferapp.com/ideal-image-sizes-social-media-posts