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1080x1920 Aspect Ratio: Size, Uses, How to Fit
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Resize Image for Bluesky
Perfect Bluesky dimensions in seconds — post images, landscape posts, profile photos, and banners. Free and private.
Drop images here, click to browse, or paste
Supports JPG, PNG, WebP, HEIC, GIF — up to 100 MB each
All Bluesky image sizes
Pick any preset in the resizer above. All Bluesky dimensions are available in one click.
Post Image
4000×4000
Landscape Post
1200×675
Profile Photo
1000×1000
Profile Banner
3000×1000
Resize for Bluesky in three steps
- 1
Upload your image
Drag and drop or select any image file. The resizer works entirely in your browser — nothing is uploaded to a server, so even private screenshots or unreleased artwork stay on your device.
- 2
Pick a Bluesky preset
Choose the preset that matches where your image will appear: Post image (up to 4000px) for square or portrait shots, Landscape post (1200x675) for the most common feed format, Profile photo (1000x1000) for your avatar that renders as a circle, or Banner (3000x1000) for your profile header.
- 3
Download and post
Export your resized image and confirm the file is under 2 MB before uploading to Bluesky. If the file is still too large, re-export at a lower quality setting or reduce dimensions further — Bluesky will reject anything over the limit at upload time.
Who resizes images for Bluesky
Bluesky's tech-forward community resizes images to stay within the platform's 2 MB per-image limit and to hit exact feed dimensions. Getting the size right means your posts render crisp in the timeline instead of being rejected or auto-cropped.
Indie developer sharing app screenshots
Developers posting app previews use the Landscape post preset (1200x675) so screenshots fill the feed card without letterboxing. Keeping the file under 2 MB is essential since Bluesky rejects oversized uploads silently during busy announce threads.
Artist posting portfolio work
Visual artists resize finished pieces to the Post image preset (up to 4000px) to preserve detail in high-resolution illustrations without exceeding the 2 MB cap. They center the focal point before cropping so the image reads well at Bluesky's feed thumbnail size.
Creator setting up a new profile
New users resize their headshot to exactly 1000x1000 for the Profile photo preset, centering their face in the frame because Bluesky renders profile photos as circles and clips the corners. Getting this right on day one avoids an awkwardly cropped avatar visible across every post and reply.
Researcher or journalist sharing data visuals
Academics and reporters paste chart screenshots into the resizer and export at 1200x675 so graphs appear inline in the feed without requiring a click-through. They check file size after export since high-resolution charts can easily exceed 2 MB when saved as PNG.
Community moderator updating a starter pack profile
Moderators managing Bluesky starter packs refresh their profile banner by resizing a wide graphic to exactly 3000x1000 and placing all key text within the center 50% of the canvas. Content outside that zone risks being cropped on narrower viewports, so centering is critical for banners.
Tech writer cross-posting a tutorial thread
Writers illustrating step-by-step tutorials resize each screenshot to the Landscape post preset (1200x675) so every image in a thread feels consistent and intentional. Consistent dimensions signal quality to Bluesky's audience, who notice mismatched aspect ratios in long educational threads.
Frequently asked questions
What is the maximum image size for a Bluesky post?
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Bluesky renders images up to 4000px and 2 MB per image (up to 10 images per post) — both doubled from the original 2000px/1 MB caps in an April 2026 update. For landscape posts shared in the feed, 1200×675 pixels (16:9) is the most common and cleanest format.
What size should a Bluesky profile photo be?
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Bluesky profile photos are displayed as a circle. Upload a square image at 1000×1000 pixels for sharp display across all screen densities. The platform scales it down automatically.
What are the Bluesky profile banner dimensions?
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The Bluesky profile banner is displayed at a 3:1 aspect ratio. The recommended upload size is 3000×1000 pixels so it stays sharp on high-resolution screens.
Does Bluesky compress uploaded images?
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Bluesky enforces a 2 MB per-image file size limit and will reject larger files. Resize your image to the recommended dimensions and use the quality slider to bring the file size within the limit before uploading.
How many images can I attach to one Bluesky post?
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Up to 10 images per post, raised from 4 in a June 2026 update. A post can contain images or one video, never both together.
From the blog
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What is aspect ratio?
Aspect ratio is the width-to-height shape of an image or video, like 16:9 or 9:16. Here's what it means and why it matters.
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Why Shrinking a GIF Increases File Size
Resizing forces every frame to be re-quantized to a fresh palette, breaking the compression the original GIF relied on.
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Why Your GIF Stops Looping After Resizing
A GIF that loops fine on its own often plays just once after resizing or converting — here's the real cause and how to fix it for good.
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