01
How they differ
| TikTok | ||
|---|---|---|
| Posts | video, photos | video, photos |
| Shapes | 9:16 | 9:16, 4:5, 1:1 |
| Text | 2,200 characters | 2,200 characters |
| Title | None | None |
| Options | Captions, privacy, duet and stitch settings | Cover frame, collaborators |
A 9:16 video works on both without cropping.
02
In the dashboard
- Connect TikTok and Instagram to the same profile.
- Pick both in the composer, add the video and the caption, and change the text for either one if it needs its own.
- Post now, schedule, queue or repeat it. Each network’s result shows on its own, with one-click retry if one fails.
03
With the API
curl -X POST https://api.reelspan.com/v1/posts/video \
-H "Authorization: Bearer $REELSPAN_KEY" \
-F user=my-brand \
-F "platform[]=tiktok" -F "platform[]=instagram" \
-F "[email protected]" \
-F "title=Your caption" \
-F "tiktok_title=A shorter caption just for TikTok"More: TikTok, Instagram, API docs, or start free.