The Bluesky Profile Banner size (3000×1000px)
The Bluesky profile banner is the wide image at the top of your profile, and 3000x1000 at a 3:1 ratio gives you a high-resolution header that stays crisp on large and retina displays. Bluesky uses the same 3:1 proportion as several other networks, but exporting at the larger 3000x1000 rather than a smaller 1500x500 means the banner holds detail when the app renders it at full width on desktop.
As with most profile headers, your circular avatar overlaps the lower-left corner of the banner, and Bluesky may crop the top and bottom slightly depending on the viewport, so the layout dictates where your content should live. Keep any text, logo, or focal imagery toward the center and center-right, and treat the lower-left as space the avatar will occupy. This prevents the common mistake of a name or handle graphic getting half-covered by the avatar.
Because Bluesky is a fast-growing, text-first network, a clean banner is a quick way to signal that a profile is active and intentional, which helps when people are deciding whom to follow. A high-resolution 3:1 image that matches your avatar and overall vibe ties the profile together without distracting from your posts. Everything here resizes 100% in your browser with no upload and for free, so your artwork stays private on your device. Bluesky is evolving rapidly and may adjust its banner rendering and recommended dimensions, so verify the current behavior before finalizing your header.