What is the best header image size for Vyper contests? Tyler May 13, 2019 06:09 Updated We recommend a size over 1280px x 620px (width x height). Related articles What size should my reward images / photos be? My user shared their referral link but didn't get any points! What does a contest look like? How do I change the Facebook / Twitter / social media share image? Some of my contestants' points are being deducted, why is that? Comments 0 comments Please sign in to leave a comment.