Formats
JPG, PNG
Bluesky banner size
As of July 2, 2026, the Bluesky banner is 1500 by 500 pixels (3:1). Below is the full spec, then a resizer already set to that size so you can export a perfectly fitted image.
BlueskyBannerConvention, not published by BlueskyLast verified July 2, 2026
Recommended size1500x500 px
Aspect ratio3:1
Safe zone: Your avatar overlaps the bottom-left corner and mobile crops the sides slightly tighter; keep text and faces centred.
Resize to 1500x500 now
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About the Bluesky banner size
A Bluesky profile banner works best at 1500 by 500 pixels, a 3:1 landscape, the same shape as a classic header image on other networks, uploaded to a roughly 1 MB cap rather than a fixed pixel requirement. Your round avatar overlaps the bottom-left corner of the banner, and mobile trims the sides a little tighter than desktop, so keep any text or logo centred and clear of that lower-left zone. A simple graphic in your brand colours travels better across that crop than a busy photo with a subject near an edge.
Quick tips
- 011500 by 500 (3:1) is a safe, widely used banner size, capped at roughly 1 MB.
- 02Your avatar overlaps the bottom-left corner; keep key content centred.
- 03Mobile crops the sides slightly tighter than desktop.
Frequently asked questions
What aspect ratio is the Bluesky banner?
The Bluesky banner uses a 3:1 aspect ratio at 1500 by 500 pixels.
3:1 is a shape, not just this size. See every image size that uses the 3:1 aspect ratio, where it comes from, and how to crop into it.
Related sizes
Bluesky avatar1000x1000LinkedIn personal banner1584x396Discord server banner960x540Twitch profile banner1200x480Etsy shop cover1600x400Eventbrite event banner2160x1080
How this spec was checked
Platform sizes change without notice, so this entry records what it was verified against rather than stating a number and hoping it holds. Last checked July 2, 2026.
ConventionBluesky does not publish a size for this surface. The number below is the one the industry has standardised on, which is a useful answer but not a claim about Bluesky.
Bluesky enforces a file-size cap (roughly 1 MB) rather than a pixel size, and publishes no banner dimensions. 1500 by 500 is borrowed from the classic Twitter header and is the shape the app's own layout matches, but it is a convention, not a Bluesky requirement.
Every spec on this site carries one of those two labels. See the cheat sheet for the full split, and the changelog for every correction with the date it happened.
See all Bluesky sizes, the full cheat sheet, or grab this spec from the JSON API.