Optimizing your brand's social media properties is the absolute first rule of effective social marketing. Because social is a largely visual medium, all of your creative absolutely, positively must be properly sized for the platform on which it appears. We've all seen those brands with pixelated cover photos, or rectangular profile pictures awkwardly crammed into a space designed for square photos. We don't want you to be that brand, and you certainly don't want to be that brand. So let us help!Here's a handy outline with the latest image sizing specs for Facebook, Twitter, Pinterest, Instagram, Tumblr and Linkedin. Bookmark it, refer to it often, and thank us later. Happy posting!

Want more tips and tricks for how to dominate social this year with Data, Creative and Amplification? Download our 2016 Social Media Survival Guide.