BlueSky Sizes & Dimensions Guide
Complete specifications for all BlueSky content types. Get the exact dimensions, aspect ratios, and file requirements for BlueSky. Updated for 2026.
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BlueSky Content SpecificationsUpdated 2026
Posts
Updated 2026Complete guide to BlueSky post dimensions, character limits, and media specifications. Create engaging posts on the decentralized social network with perfect formatting. Updated for 2026.
Dimensions:
1000×1000
Aspect Ratio:
1:1
Max Size:
1MB
Format:
JPG, JPEG
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Video
Updated 2026Complete guide to BlueSky video dimensions, duration limits, and technical specifications. Upload videos with perfect format for the decentralized social network. Updated for 2026.
Dimensions:
1920×1080
Aspect Ratio:
16:9
Max Size:
100MB
Format:
MP4, MOV
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BlueSky Content Best Practices
- ✓Always use the recommended dimensions for better algorithm performance
- ✓Optimize file sizes for faster loading and better user experience
- ✓Test different aspect ratios to see what works best for your audience
- ✓Use PostFast to automatically resize and optimize for BlueSky
Developer Resources
BlueSky API Guides
Learn how to schedule BlueSky content programmatically via API
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