Reels play on X
Reels post as native X videos. Reels over 2 minutes need X Premium; without it they don't post.
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Auto post Instagram Reels and photos to X
Yes, and as the real thing: PostOnce posts your new Reels to X as videos and your photos and carousels as photos, so followers see the post, not just a link to it.
- No credit card
- 3 min setup
Reel on Instagram
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How to cross post Instagram to Twitter in 3 steps
Your Reels play on X instead of showing as a link. PostOnce sent 2,236 Instagram posts to X in the last 30 days.
Connect Instagram
Instagram needs a Business or Creator account.
Connect X
Sign in to the X account that should post.
Turn on the workflow
Pick Reels, photos or both, and turn on the AI rewrite to fit X.
2 ways to post from Instagram to X
By hand, for every post
- Download the Reel or photos from Instagram.
- Upload them to X, 4 photos at most.
- Rewrite the caption to fit 280 characters.
With PostOnce, once
- Connect Instagram and X.
- New Reels and photos post to X.
- Captions are rewritten for X if you want.
Your photos and videos show on X, not just a link
4 photos per post
X shows up to 4 photos in a post, so a longer carousel posts its first 4. A carousel that starts with a video posts that video.
Captions that fit X
PostOnce cuts captions at 280 characters, or 4,000 if your X account has Premium. Turn on Rewrite caption with AI to shorten them instead; it drops hashtags for X except disclosure tags like #ad.
Posts and Reels go by default
Only feed posts and Reels go by default. Turn on Stories or Trial Reels if you want them on X too.
Only the posts you pick
Send only posts with a hashtag or keyword, or skip the ones that have one.
Older posts too
Turn on existing posts to send your older Reels and photos, on paid plans and the free trial.
Instagram Twitter integration questions
Can I link my Instagram to Twitter?
Putting your X link in your Instagram bio connects the profiles, but it copies no posts. PostOnce posts the Reels and photos themselves.
Is there an Instagram Twitter integration?
PostOnce is one. Connect Instagram and X once, and your new Reels, photos and carousels post to X as native video and photos.
Can you post Instagram Reels on X?
Yes. Reels post as X videos. Reels over 2 minutes need X Premium; without it they don't post.
Can you post carousels on X?
Yes, up to 4 photos per post. A longer carousel posts its first 4 photos.
What happens to long captions?
PostOnce cuts them at 280 characters, or 4,000 if your X account has Premium. Turn on Rewrite caption with AI and PostOnce shortens each caption for X instead.
Can I send my old Instagram posts to X?
Yes. Turn on existing posts and PostOnce sends your older Reels and photos, on paid plans and the free trial. They count toward the daily limit on X.
Is there a daily limit on X?
PostOnce sends up to 12 posts to X in any 24 hours, counted across your X accounts. Extra posts wait their turn, for up to 2 days.
Does PostOnce work with Instagram personal accounts?
No. PostOnce connects Instagram Business and Creator accounts.
Can I post the same Reels on Instagram and X?
Yes. PostOnce posts through X's official API, like any scheduler, and uploads the video or photos rather than a link. New or inactive accounts get few views either way.
More ways to crosspost Instagram and X
Start posting your Instagram to X
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