Size Matters: Updated Social Media Image Size Chart For Facebook, Twitter, Instagram, YouTube, Pinterest, Google+, LinkedIn
[UPDATE 2] You'll find the 2017 Edition of the Social Media Size Chart here. After all, it can be very confusing. Facebook, Twitter, Instagram, YouTube, Pintrest, Google+ and LinkedIn each have their won unique size and shape guidelines for posts, profiles, headers and more.
via ClicksZ
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