Sizes and limits for each network
What each network accepts from scheduling apps, checked on 24 October 2026. For the reasons behind the numbers, see the guides to image sizes, Instagram Reels, TikTok videos and YouTube Shorts.
| Network | Aim for | Limits |
|---|---|---|
| Instagram Feed photo or carousel | 1080 × 1350 (4:5) | JPEG up to 8 MB, shapes from 4:5 to 1.91:1 through apps; the app itself also takes 3:4. Source |
| Instagram Story photo | 1080 × 1920 (9:16) | JPEG up to 8 MB; 9:16 fills the screen. Source |
| Instagram Reel | 1080 × 1920 (9:16) | MP4 or MOV, 3 seconds to 15 minutes, up to 300 MB, at most 1,920 pixels wide, 23–60 fps. Source |
| Instagram Story video | 1080 × 1920 (9:16) | MP4 or MOV, 3 to 60 seconds, up to 100 MB, at most 1,920 pixels wide. Source |
| Facebook Page photo | No size published | Up to 10 MB through apps (15 MB in Facebook itself). Source |
| Facebook Reel | 1080 × 1920 (9:16) | 9:16, at least 540 × 960, 3 to 90 seconds, 24–60 fps, MP4 recommended. Source |
| TikTok Video | 1080 × 1920 (9:16) | MP4, WebM or MOV, up to 10 minutes (your account may allow only 3 or 5), up to 4 GB, 360–4,096 pixels a side, 23–60 fps. Source |
| TikTok Photo post | Up to 1080p | JPEG or WebP up to 20 MB, no larger than 1080p, up to 35 photos. Source |
| YouTube Short | 1080 × 1920 (9:16) | Square or vertical, up to 3 minutes; longer or horizontal videos become regular videos. Source |
| LinkedIn Photo | 1080 wide, 4:5 to 3:1 | Up to 5 MB, at least 552 × 276; shapes outside 3:1 to 4:5 get cropped. Source |
| LinkedIn Video | Your video's own shape | MP4, 3 seconds to 30 minutes, 75 KB to 500 MB through apps. Source |
| X Photo | No size published | JPEG, PNG or GIF up to 5 MB; 2:1 to 3:4 shows in full. Source |
| Threads Photo | No size published | JPEG or PNG up to 8 MB, 320–1,440 pixels wide (others are scaled), up to 10:1. Source |
| Threads Video | 1080 × 1920 (9:16) | MP4 or MOV, up to 5 minutes and 1 GB, at most 1,920 pixels wide, 23–60 fps. Source |
| Pinterest Image Pin | 1000 × 1500 (2:3) Source | BMP, JPEG, PNG, TIFF or WebP up to 20 MB; taller than 2:3 may get cut off. Source |
| Pinterest Video Pin | 1080 × 1920 (9:16) | MP4 or M4V (MOV in the apps), 4 seconds to 5 minutes. Source |
| Bluesky Photo | Up to 4000 × 4000 | Up to 2 MB and 4,000 × 4,000 pixels. Source |
| Bluesky Video | Your video's own shape | Up to 10 minutes and 300 MB. Source |
How Unisenda handles sizes
- Videos up to 500 MB and photos up to 20 MB upload to your library, and the original goes out uncompressed wherever the network accepts it.
- PNG and WebP photos are sent as JPEG copies, and phone videos in MOV or HEVC get an H.264 MP4 copy.
- Instagram and Threads don't take videos wider than 1,920 pixels from apps, so Unisenda makes a sharp 1080p copy for them.
- Before you schedule, Unisenda flags anything a network would refuse. You can try it in the demo, where nothing is published.
Questions people ask
Is my photo or video uploaded?
No. Your browser reads the file's size, shape and length on your device. Nothing is sent to Unisenda.
Why are the limits stricter than in the apps?
These are the limits for scheduling apps, which post through each network's official API. The networks' own apps sometimes allow more, such as 20-minute Instagram Reels, and the checker notes where they do.
Does Unisenda use the same limits?
Unisenda takes videos up to 500 MB and images up to 20 MB. Where a network needs a smaller or different file, such as a JPEG for Instagram or a lighter video for Threads, Unisenda prepares a copy for that network and checks it before posting.
What does 'posts, but check' mean?
The network accepts the file, but it will crop or scale it, or show it smaller than the screen. Check the preview before you post.
Can the checker read iPhone HEIC photos?
Not in most browsers. Export the photo as a JPEG first, or set your iPhone camera to Most Compatible.
Sources
Checked on 24 October 2026. Networks change their rules, so check the source before you rely on a number.
- Meta for Developers: IG User Media
- Meta for Developers: Page Photos
- Meta for Developers: Reels publishing
- TikTok for Developers: Media Transfer Guide
- YouTube Help: Upload YouTube Shorts
- LinkedIn Help: Share photos
- LinkedIn: Videos API
- X Help Center: Posting photos or GIFs
- Meta for Developers: Threads API overview
- Pinterest Help: Review Pin specs
- Pinterest Business Help: Review ad specs
- Bluesky: photos up to 2 MB and 4000 × 4000
- Bluesky: videos up to 10 minutes
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