Last updated: April 28, 2026

Bluesky Image Size Cheat Sheet 2026

Q: What is the Bluesky post image size?

FastEdit uses a 1000x1000 JPEG preset for Bluesky post images. This is a practical compact target; use manual dimensions if you need a different crop or larger source for a specific client.

Q: What is the Bluesky avatar size?

FastEdit uses 400x400 pixels for Bluesky avatars in PNG format. The image is displayed as a circle, so keep the subject centered. The maximum file size target is 1 MB.

Q: Does Bluesky compress images?

Yes. Bluesky still processes uploaded images. Pre-optimizing in FastEdit gives you better control over crop, dimensions, and compression before Bluesky applies its own processing.

Q: What image formats does Bluesky support?

Bluesky supports JPEG and PNG image formats for posts and profile photos. JPEG is recommended for photographs and complex images, while PNG works better for graphics with text or sharp edges.

Bluesky image handling is client-dependent and may change as the platform evolves. FastEdit keeps the presets conservative: 1000x1000 JPEG for post images, 400x400 PNG for avatars, and 1500x500 PNG for banners. These targets are practical for fast uploads while preserving predictable crops.

Start editing Bluesky Post Image

Pick this preset, drop your file, and FastEdit starts from the Bluesky Post Image dimensions, format, and file-size target.

Bluesky Image Size Cheat Sheet

Post Image

1000x1000 JPEG Max 1 MB

General-purpose post image preset for photos, art, and screenshots. Keeps uploads compact while preserving a square crop.

Open Bluesky Post Image preset →

Avatar

400x400 PNG Max 1 MB

Profile picture displayed as a circle in the feed and on the profile page. Keep subjects centered.

Open Bluesky Avatar preset →

Banner

1500x500 PNG Max 1 MB

Wide profile banner crop. Keep logos, faces, and text near the center because mobile and desktop clients crop the edges differently.

Open Bluesky Banner preset →

What can you create for Bluesky?

Use these rows when you know the asset you need but not the exact settings. Each one points to the matching FastEdit workflow.

How to prepare Bluesky Post Image

Open FastEdit with the Bluesky Post Image preset selected, drop your file, then export to this row's target: 1000x1000, JPEG, max 1 MB.

bluesky post image sizebluesky post image dimensionsresize bluesky post imagecreate bluesky post image

Open Bluesky Post Image preset →

How to prepare Bluesky Avatar

Open FastEdit with the Bluesky Avatar preset selected, drop your file, then export to this row's target: 400x400, PNG, max 1 MB.

bluesky avatar sizebluesky avatar dimensionsresize bluesky avatarcreate bluesky avatar

Open Bluesky Avatar preset →

How to prepare Bluesky Banner

Open FastEdit with the Bluesky Banner preset selected, drop your file, then export to this row's target: 1500x500, PNG, max 1 MB.

bluesky banner sizebluesky banner dimensionsresize bluesky bannercreate bluesky banner

Open Bluesky Banner preset →

Before you upload

Bluesky currently processes uploaded images, so profile images and banners benefit from conservative dimensions and compression.
Use 1:1 aspect ratio for the FastEdit post preset, or crop manually if your specific post needs landscape or portrait framing.
Avatar images are displayed as circles: avoid placing important content near corners.
Use JPEG for photos and PNG for screenshots, diagrams, and images with sharp text.

FAQ

What is the Bluesky post image size?

What is the Bluesky avatar size?

Does Bluesky compress images?

What image formats does Bluesky support?