TikTok to Instagram Reels — Auto Poster
Multiposter is an auto poster for getting your TikTok content onto Instagram Reels: connect both accounts once through each platform’s official OAuth screen, upload the video, and publish or schedule to both platforms in one step. The file goes to Instagram through the official Graph API at full quality.
No credit card required. Seven days of full Growth access.
From TikTok to Reels in Three Steps
Connect via OAuth
Authorize TikTok and Instagram through each platform’s official "Sign in with…" screen. Multiposter never sees your passwords; tokens are encrypted and revocable anytime.
Upload once
Drop in your clean vertical export — not a watermarked TikTok download. One file covers both platforms; length and size limits are validated automatically.
Caption, then publish or schedule
Write the caption and hashtags once, override per platform if you like, then post now — or schedule the Reel for when your Instagram audience is most active.
Frequently Asked Questions
How do I auto post TikTok videos to Instagram Reels?
Connect your TikTok and Instagram accounts to Multiposter through each platform’s official OAuth screen, upload your video once, select Instagram Reels (and any other platforms), then publish or schedule. Multiposter delivers the file through the Instagram Graph API — no re-uploading in the Instagram app.
Will Instagram demote my Reel if it has a TikTok watermark?
Yes — Instagram has said it reduces distribution of visibly recycled videos, and the TikTok logo is the clearest signal. That’s why Multiposter works from your original export, not a TikTok download: upload the clean file once and Reels receives it watermark-free at full quality.
Do I need to reformat my TikTok video for Reels?
No. Both platforms use vertical 9:16 video. Multiposter checks Instagram’s length and size limits before publishing, so a standard TikTok-length clip uploads cleanly as a Reel without re-exporting.
Can I schedule the Reel for a different time than the TikTok post?
Yes. Publish everywhere at once, or schedule per platform — for example TikTok in the afternoon and the Reel in the evening when your Instagram audience is most active.
Do I have to give Multiposter my Instagram password?
No. Instagram connects through Meta’s official OAuth flow, so Multiposter never sees your password. Access tokens are stored encrypted, and you can revoke them from Instagram or disconnect inside Multiposter at any time.
Is there a free plan?
Yes. Every account starts on Free. Your first successful publish unlocks a no-card 7-day Growth trial, then you continue on Free with 8 publishing jobs per monthly usage period.
Every TikTok, on Reels Too
One upload also covers YouTube Shorts and Facebook — see how to post a video to multiple platforms at once.