Bluesky image sizes (2026)
Every Bluesky image dimension you need — profile pictures, banners and posts — in exact pixels, with the aspect ratio and safe-zone notes that stop Bluesky from cropping your work.
All Bluesky sizes
| Surface | Size (px) | Ratio | Shape | Notes |
|---|---|---|---|---|
| Profile picture | 400 × 400 px | 1:1 | Circle | — |
| Banner | 1500 × 500 px | 3:1 | Wide | — |
File format & quality tips
- Pixel size first. Match the dimensions above exactly — uploading larger and letting Bluesky downscale is fine; uploading smaller makes it blurry.
- PNG for logos, icons and avatars (crisp edges, supports transparency). JPG / WebP for photos and detailed banners (smaller files, faster loads).
- Mind the safe zone. Wide banners get cropped differently on phone vs desktop — keep text and faces centered.
- Export once, right. AI All Social outputs the exact Bluesky size in PNG, JPG or WebP, safe-zone aware, so you skip the resize dance.
Bluesky sizes — FAQ
What is the best Bluesky profile picture size?
400 x 400 px (1:1). Upload at that exact size so Bluesky doesn't crop or compress it.
What file format should I use for Bluesky?
PNG for logos, avatars and anything with sharp edges or transparency; JPG or WebP for photos and busy banners to keep the file smaller. AI All Social can export PNG, JPG or WebP.
Why does my Bluesky image look cropped or blurry?
It was the wrong size or aspect ratio, so Bluesky cropped or compressed it. Upload at the recommended pixel size and keep the subject inside the safe zone.
Can I make Bluesky images without design skills?
Yes — describe what you want, pick the Bluesky surface, and AI All Social generates it at the exact size, safe-zone cropped and upload-ready.
Size guides for other platforms
Skip the resizing
AI All Social makes Bluesky assets at the exact size, every time.