Social media limits cheat sheet 2026
Every limit of all five networks on one sheet: length, size, caption, hashtags, formats.
Limits as Dropslate checks them today. Each network’s source is under its column.
| Limit | YouTube | Threads | TikTok | ||
|---|---|---|---|---|---|
| Title | 100 | — | — | — | — |
| Caption | 5,000 | 2,200 | 63,206 | 500 | 2,200 |
| Caption on a photo carousel | — | — | — | — | 4,000 |
| Tags, all together | 500 | — | — | — | — |
| Hashtags | — | 30 | — | — | — |
| Mentions | — | 20 | — | — | — |
| Video length | — | 0:03 – 15:00 | 0:03 – 240:00 | 5:00 | 0:03 – 10:00 |
| Video file size | 256 GB | 300 MB | 4 GB | 1 GB | — |
| Video formats | mp4, mov, webm, avi, mpeg | mp4, mov | mp4, mov | mp4, mov | mp4, mov, webm |
| Short-form (Shorts, Reels) up to | 3:00 | 1:30 | 1:30 | — | — |
| Story up to | — | 1:00 | 1:00 | — | — |
| Images per post | — | 2 – 10 | 10 | 2 – 20 | 2 – 35 |
| Image file size | — | 8 MB | 10 MB | 8 MB | 20 MB |
| Image formats | — | jpg, jpeg | jpg, jpeg, png, gif, bmp, tiff | jpg, jpeg, png | jpg, jpeg, png, webp |
| Source | developers.google.com/youtube/v3/docs/videos + support.google.com/youtube/answer/57407 | developers.facebook.com/docs/instagram-platform/content-publishing | developers.facebook.com/docs/graph-api/reference/page + /docs/video-api/guides/reels-publishing | developers.facebook.com/docs/threads/posts | developers.tiktok.com/doc/content-posting-api-media-transfer-guide |