We allow all standard image formats up to 10MB in size.
Header images on profile and campaign pages will be cropped to a ratio of 2.5:1 width to height. So high resolution, wide images are best. Keep in mind, if your image is not at least 2.5 times wide as it is tall, it may be zoomed in to fit. A minimum resolution of 1200 x 480 is optimal.
Organization logos and user avatars will be cropped square. A minimum resolution of 800 x 800 is optimal.
We recommend uploading the highest resolution version of the image that you have.