What size is a Twitter header?
Twitter/X headers are 1500×500 pixels (3:1 ratio). On mobile, the top and bottom edges may be cropped slightly, so keep important content centered.
Why does my Twitter header look blurry?
Upload at exactly 1500×500 pixels and keep the file under 2MB. JPG format at 90%+ quality gives the best results. Avoid heavy text that may become unreadable.
Does the Twitter header get cropped on mobile?
Yes, about 60px from top and bottom may be hidden on mobile. Keep text and important elements within the center 1500×380 safe zone.
