Header Safe Zone Checker
Upload a finished timeline image or header and check it against X's UI overlay zones.
Upload an image to check it against the Feed Image safe zone
Anything in the dimmed area risks being covered by platform UI (titles, captions, buttons, rounded corners). Keep key subjects and text inside the dashed line.
Only two formats matter for X's own overlay risk — the timeline feed image, which has essentially no overlap to worry about, and the profile header, which does.
- •The profile photo overlaps the header's bottom-left corner on every device
- •The crop itself changes shape between desktop and mobile, independent of the avatar
This follows the same logic as the dedicated Header Maker on this site — a header exported elsewhere is worth checking here rather than assuming it survived both crops untouched.