Free tool
TikTok video size and specs
TikTok’s posting API takes video from 360 to 4,096 pixels on each side. Every creator can post 3-minute videos through TikTok’s posting API, and some accounts can post 5 or 10 minutes. 10 minutes is the longest video the API takes. Files can be up to 4 GB. Formats: MP4, WebM and MOV. TikTok’s posting API allows 10:00. Socialync posts up to 3:00.
| Size and shape | 360 to 4,096 pixels on each sideFrom 360 to 4,096 pixels on each side, 23 to 60 frames per second. |
|---|---|
| Length | Up to 10:00Every creator can post 3-minute videos through TikTok’s posting API, and some accounts can post 5 or 10 minutes. 10 minutes is the longest video the API takes. |
| File size | Up to 4 GB |
| Formats | MP4, WebM, MOVMP4 with H.264 is recommended. H.265, VP8 and VP9 also work. |
| What Socialync posts | Up to 3:00, files up to 4 GBTikTok’s posting API allows 10:00. Socialync posts up to 3:00. |
Platform numbers come from each platform's own help and developer pages, checked October 11, 2026. Socialync's numbers are the limits it checks before it publishes.
Check your video for TikTok
Drop the file to see whether it fits TikTok and every other platform you pick, with the fix for anything that fails. The check runs in your browser, so the video never leaves your device.
Frequently asked questions
What size is a TikTok video?
TikTok’s posting API takes video from 360 to 4,096 pixels on each side.
How long can a TikTok video be?
Every creator can post 3-minute videos through TikTok’s posting API, and some accounts can post 5 or 10 minutes. 10 minutes is the longest video the API takes. TikTok’s posting API allows 10:00. Socialync posts up to 3:00.
What is the maximum file size for a TikTok video?
Files can be up to 4 GB.
What video formats does TikTok accept?
MP4, WebM, MOV. MP4 with H.264 is recommended. H.265, VP8 and VP9 also work.
Does the checker upload my video?
No. Your browser reads the file size, type, length and frame size on your device, and nothing is sent anywhere.
Video specs for every platform
| Platform | Size and shape | Length | File size | Formats | Socialync posts |
|---|---|---|---|---|---|
| Instagram Reels | 9:16 recommended, at least 720 pixels | 3 seconds to 15:00 | Up to 300 MB | MP4 and MOV | Up to 3:00, files up to 4 GB |
| TikTok | 360 to 4,096 pixels on each side | Up to 10:00 | Up to 4 GB | MP4, WebM and MOV | Up to 3:00, files up to 4 GB |
| YouTube Shorts | Vertical or square, up to 1080p | Up to 3:00 | Up to 256 GB | MP4, MOV, WebM, AVI and more | Up to 3:00, files up to 4 GB |
| Facebook Reels | 1080x1920 (9:16) recommended | No limit | Not published | MP4 and MOV | Up to 3:00, files up to 4 GB |
| 256x144 to 4096x2304 | 3 seconds to 15:00 | 75 KB to 5 GB | MP4, MOV, AVI, WebM and more | Up to 3:00, files up to 4 GB | |
| X (Twitter) | 720x1280 recommended for vertical | 0.5 seconds to 2:20 | Up to 512 MB | MP4 and MOV | Up to 2:20 without X Premium, files up to 512 MB |
| Threads | 9:16 recommended, up to 1,920 pixels wide | Up to 5:00 | Up to 1 GB | MP4 and MOV | Up to 5:00, files up to 1 GB |
| Bluesky | Not published | Up to 10:00 | Up to 300 MB | MP4, MPEG, WebM and MOV | Up to 10:00, files up to 300 MB |