Cross-Posting Guide
Post to Instagram and TikTok from one upload
Publish to both platforms at the same time with custom captions and hashtags for each. No copy-paste, no juggling apps.
Quick answer: To post to Instagram and TikTok at the same time, use Socialync. Upload your video once, pick Instagram and TikTok, write a caption for each, then post now or schedule it. Both go live at the same moment. It's free for 5 posts a month with no credit card.
See Instagram to TikTok cross-posting in action
Share content on Instagram and TikTok from one upload. Watch Socialync handle formatting, captions, and scheduling automatically.
Why Socialync for Instagram to TikTok
Upload once, post to both
Drop a video into Socialync. We publish to Instagram and TikTok at the same time, so you can i cross post from instagram to tiktok without copy-paste.
Both support 9:16 vertical video
Instagram Reels and TikTok both prefer 1080×1920 vertical. The same video file works on both, no aspect ratio changes needed.
Different caption styles per platform
Instagram captions can run 3-5 sentences with storytelling. TikTok hooks live in the first 1-2 lines. Customize each in Socialync without copy-pasting.
Trusted by creators and businesses
Join thousands of people who stopped manually reposting.
The multi-platform posting is seamless. My content reaches 3x more people with zero extra effort.
Simple dashboard, easy sign-up, and the scheduling is so nice. If I make 10 videos in one day I can schedule them to all platforms weeks in advance. Goated!
I built this because I was burning out posting manually. Now I post in 3 minutes instead of 45.
How it works for Instagram to TikTok
Five steps. One upload. Posts to both platforms.
- Upload your Reel or video once to Socialync
- Write an Instagram caption and a TikTok caption
- Set platform-specific hashtags
- Schedule for each platform peak time, or post now
- Both Instagram and TikTok publish at the same moment
Frequently asked questions
Can I cross post from Instagram to TikTok?
Yes. Socialync publishes to both Instagram and TikTok simultaneously from one upload. You can customize captions and hashtags per platform, and either post instantly or schedule for each platform peak time.
Can you share directly from Instagram to TikTok?
No. Instagram's built in sharing only goes to Facebook and Threads, and there is no share to TikTok button. To get a Reel onto TikTok, upload the original video to TikTok yourself, or post it to both from one upload with a tool like Socialync.
How do I share an Instagram Reel to TikTok without the watermark?
Upload your original source video instead of a download. A Reel saved from Instagram is compressed and carries an Instagram watermark. With Socialync you upload the clean file once and it posts to Instagram and TikTok together.