Find the right X image dimensions with this 2026 guide. Learn the recommended 400×400 profile photo, 1500×500 header, 1200×675 post image and 1200×628 link card sizes, plus aspect ratios and file limits. It explains mobile banner cropping, profile-photo overlap, multi-image grids, video specifications and export settings to keep visuals clear, correctly framed and ready for publishing. https://fixphotolab.com/blog/twitter-image-sizes/