We recommend web-optimized images in PNG, JPG or GIF format (transparent backgrounds are okay), that are no bigger than 800 pixels wide by 200 pixels tall. Rectangular images are best -- images that are horizontally longer than they are vertically tall.
What is the maximum file size I can upload?
The maximum allowed width is 2000 pixels, the maximum allowed height is 1000 pixels, and the maximum file size is 500KB. Though we allow image files up to those thresholds, we strongly encourage you to use smaller images, since they will be loaded onto attendee's devices.