Thanks to the folks at Constant Contact for keeping us up-to-date with the ever-changing size formats in social. You’ll want to bookmark this post to refer to when creating your social images. If you’re using PicMonkey, Pagemodo or Canva (my fav), they’ve got you covered. If you’re a wiz at Photoshop however, and would rather create your graphics from scratch, keep this infographic handy.
Image source: http://blogs.constantcontact.com/social-media-image-sizes-2016/