Social Media Sizes & Dimensions Guide
Always use the right dimensions. Get the latest 2025 specifications for all major social media platforms. PostFast automatically optimizes all your scheduled content for every platform - never manually resize again.
Browse by Platform
Reels, Stories, Feed posts, and Carousels - all the Instagram dimensions you need.
TikTok
Video specifications for viral TikToks, including duration, file size, and aspect ratios.
YouTube
YouTube Shorts and video specifications for maximum reach and engagement.
Feed posts, Stories, and video dimensions optimized for Facebook's algorithm.
X (Twitter)
Image and video specifications for tweets and X premium features.
Professional content dimensions for LinkedIn posts, articles, and videos.
Threads
Meta's text-based platform specifications for images and videos.
BlueSky
Decentralized social media platform specifications for posts and media.
Quick Reference
| Platform | Content Type | Dimensions | Aspect Ratio | Max Size |
|---|---|---|---|---|
| bluesky | feed | 1000×1000 | 1:1 | 1MB |
| bluesky | video | 1920×1080 | 16:9 | 100MB |
| feed | 1080×1350 | 4:5 | 30MB | |
| stories | 1080×1920 | 9:16 | 4GB | |
| reels | 1080×1920 | 9:16 | 1GB | |
| reels | 1080×1920 | 9:16 | 4GB | |
| stories | 1080×1920 | 9:16 | 4GB | |
| feed | 1080×1350 | 4:5 | 30MB | |
| feed | 1200×627 | 1.91:1 | 8MB | |
| video | 1920×1080 | 16:9 | 5000MB | |
| threads | feed | 1080×1920 | 9:16 | 100MB |
| threads | video | 1080×1920 | 9:16 | 500MB |
| tiktok | video | 1080×1920 | 9:16 | 500MB |
| x | feed | 1200×675 | 16:9 | 5MB |
| x | video | 1280×720 | 16:9 | 512MB |
| youtube | shorts | 1080×1920 | 9:16 | 256GB |
Stop Manually Resizing Your Content
PostFast automatically optimizes all your scheduled content for every platform. Upload once, publish everywhere with perfect dimensions.
Start Your Free Trial