Create wide profile headers for X, LinkedIn and other social profiles - composed at 3:1 with the avatar overlap and mobile crop already accounted for, so nothing important gets cut off.
How the x header & banner maker works
Describe the subject, style and palette, and say whether you want tagline space. The generator composes a 3:1 banner keeping the lower-left calm for your profile picture and important detail away from the crop edges. Rerun to shift the focal placement, then export at 1500 by 500 pixels and upload, checking it on both mobile and desktop.
Tips for the best results
Leave the lower-left third quiet - that is where the avatar sits on most profiles. Keep detail out of the extreme edges because mobile crops tighter than desktop. Simple, low-contrast designs read far better at banner scale than busy scenes, and any tagline should be added yourself for clean type.