Your header image is the main background image at the top of your profile page, so you'll want this to be of a reasonable quality.
It needs to be less than 5MB, and with minimum width of 1400px.

Your header image is the main background image at the top of your profile page, so you'll want this to be of a reasonable quality.
It needs to be less than 5MB, and with minimum width of 1400px.