Ideal File Sizes, Formats, and Media Limits for Social Media posts
Written By Ghina Rehman
Last updated 2 months ago
Creating the perfect post requires more than just creativity. It also means tailoring content to each platform's technical requirements. Here’s a complete guide to the ideal file sizes, formats, media counts, and aspect ratios for major social media platforms.
📌 General Media Limits
Maximum image size: 15 MB
Maximum video size: 953 MB
Note: Every video uploaded to Facebook is now considered a Reel, regardless of its duration or format.
Media count: 80 images or 1 video
Caption/text limit: 5,000 characters
Formats supported: JPG, PNG, BMP, WEBP, TIFF, JPEG, MP4, M4V, MOV, QT, AVI, HEIC
Video duration: 1 second to 2 hours
Recommended aspect ratios:
Images: 1:1, 1.91:1, 4:5, 2:3, 16:9, 9:16
Videos: 16:9, 4:5, 1:1, 2:3, 9:16
Media count: 4 images or 1 video
Caption/text limit: 280 characters
Formats supported: JPG, PNG, WEBP, GIF, JPEG, MP4, M4V, MOV, QT, AVI, HEIC
Video duration: 1 to 140 seconds
Recommended aspect ratios:
Images: 1:1, 1.91:1, 16:9
Videos: 16:9, 4:5, 1:1, 2:3, 9:16
Media count: 10 images or 1 video
Caption/text limit: 2,000 characters
Video story limit: 60 seconds
Video duration: 3 seconds to 15 minutes
Formats supported: JPG, PNG, JPEG, MP4, WEBP, M4V, MOV, QT, AVI, HEIC
Recommended aspect ratios:
Images: 1:1, 1.91:1, 4:5, 16:9
Videos: 1:1, 1.91:1, 4:5, 16:9
Media count: 9 images or 1 video
Caption/text limit: 3,000 characters
Video duration: 3 seconds to 10 minutes
Formats supported: JPG, PNG, WEBP, JPEG, GIF, MP4, HEIC, PDF, PPT, DOC
Recommended aspect ratios:
Images: 1:1
Videos: 1:1
Google Business Profile
Media count: 1 image
Caption/text limit: 1,500 characters
Formats supported: JPG, PNG, JPEG, HEIC
Recommended aspect ratios:
Images: 4:3
Mastodon
Media count: 4 images or 1 video
Caption/text limit: 500 characters
Video duration: 2 minutes 20 seconds
Formats supported: JPG, PNG, WEBP, GIF, JPEG, MP4, M4V, MOV, QT, AVI, HEIC
Recommended aspect ratios:
Images: 1:1, 1.91:1, 16:9
Videos: 16:9, 4:5, 1:1, 2:3, 9:16
YouTube
Media count: 1 video
Caption/text limit: 5,000 characters
Video duration: Up to 12 hours
Formats supported: MP4, M4V, MOV, QT, AVI
Recommended aspect ratios:
Videos: 16:9, 9:16
Reddit/Subreddit
Media count: 1 image or 1 video
Caption/text limit: 1,000 characters
Video duration: Up to 15 minutes
Formats supported: JPG, PNG, WEBP, GIF, JPEG, MP4, M4V, MOV, QT, AVI, HEIC
Recommended aspect ratios:
Images: 1:1, 1.91:1, 4:5, 2:3, 16:9, 9:16
Videos: 1:1, 1.91:1, 4:5, 2:3, 16:9, 9:16
TikTok
Media count: 1 video
Caption/text limit: None
Video duration: Up to 10 minutes
Formats supported: MP4, M4V, MOV, QT, AVI
Recommended aspect ratios:
Videos: 16:9, 9:16
Frame rate: 23–60 FPS
Media count: 1 image or 1 video
Caption/text limit: 500 characters
Video duration: 1 second to 5 minutes
Formats supported: JPG, PNG, WEBP, JPEG, MP4, QT, M4V, MOV
Recommended aspect ratios:
Images: 2:3
Videos: 2:3
BlueSky
Media count: 4 images or 1 video
Caption/text limit: 300 characters
Formats supported: 'jpg', 'png', 'gif', 'jpeg', 'webp', 'mp4', 'm4v', 'mov', 'qt', 'avi'
Recommended aspect ratios:
Images: 1:1, 1.91:1, 16:9
Threads
Media count: 10 images or 1 video
Caption/text limit: 500 characters
Video duration: 5 minutes
Formats supported: JPG, PNG, JPEG, MP4, M4V, MOV, QT, AVI, WEBP
Recommended aspect ratios:
Images: 1:1, 1.91:1, 16:9
Videos: 16:9, 4:5, 1:1, 2:3, 9:16
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