Crosspost from Facebook to Instagram Automatically
Auto post Facebook to Instagram instantly — no downloads, no re-uploads, no manual work. Just publish on Facebook and your content appears on Instagram.
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Facebook to Instagram crossposting: Meta made it easy, but there's a catch
! Requires a creator or business Instagram account — personal profiles cannot crosspost from Facebook
+ ! Accounts must be linked in Meta's Accounts Centre
+ ! Research suggests crossposting from Facebook to Instagram can reduce reach compared to native uploads
+ ! Facebook text posts cannot be crossposted to Instagram — only images, videos, and Reels
+ ! Instagram formatting (1:1 or 4:5 feed, 9:16 Reels) doesn't always match Facebook's defaults
↓ There's an easier way
What You Need to Know
How to set up and use Facebook-to-Instagram crossposting
Go to Meta's Accounts Centre via Facebook Settings and connect your Instagram business or creator account.
Enable 'Sharing across profiles' for the content types you want — posts, Stories, or Reels.
When creating a Facebook post, you'll see an Instagram toggle.
Turn it on before you publish.
The post goes to both simultaneously.
Note: Facebook text-only posts cannot be crossposted to Instagram.
Only posts with images or videos qualify, and the aspect ratio needs to be Instagram-compatible (square, portrait, or 9:16 for Reels) to avoid awkward cropping.
Getting better results than a straight crosspost
If you're crossposting Reels, make sure the video was filmed vertically (9:16) — a landscape Facebook video crossposted to Instagram Reels gets letterboxed and looks like an afterthought.
Write the caption to work for both audiences, or use the 'Customize for Instagram' option during posting to add platform-specific hashtags and remove Facebook-specific language.
Instagram responds well to five to fifteen targeted hashtags; Facebook does not.
Captions that end with a question get more comments on Instagram, which drives reach.
PostOnce gives you more control than Meta's native crosspost
Meta's crosspost treats both platforms identically.
PostOnce lets you customize per platform — different caption, different hashtags, optimized formatting for each.
Post on Facebook, and PostOnce publishes a properly adapted version to Instagram automatically.
Same efficiency, better results.
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Features
How PostOnce Handles It
Set up Facebook to Instagram crossposting once. PostOnce automates the rest.
Easy Facebook Crossposting Setup
Connect your Facebook and Instagram accounts, choose your crosspost rules, and you're done.
Setup takes under 60 seconds. After that, everything runs automatically in the background.
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Native Video Upload to Instagram
When you crosspost Facebook to Instagram, PostOnce uploads the actual video file — not a link, not a preview.
Your Facebook content appears as a native Instagram post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every Facebook post belongs on Instagram. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on Instagram ends up there.
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Auto Post to Multiple Platforms
Don't stop at Facebook to Instagram crossposting. Auto post your Facebook content to YouTube Shorts, Facebook, LinkedIn, Threads, and more — all at once.
One post, everywhere. Each platform gets a native upload with adapted formatting.
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Real-Time Automation
PostOnce monitors your Facebook account and automatically crossposts new content to Instagram.
No scheduling, no batching. Publish on Facebook and it appears on Instagram within minutes — fully automated Facebook to Instagram posting.
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Facebook vs Instagram at a Glance
| Spec | ||
|---|---|---|
| Caption Limit | 63,206 chars | 2,200 chars |
| Max Video Length | 4h | 1h |
| Preferred Aspect Ratio | 16:9 | 9:16 |
| Max Video File Size | 10GB | 4GB |
| Carousel Support | Up to 10 items | Up to 10 items |
| Hashtag Strategy | Unlimited | Up to 30 |
| Link Support | Yes | No |
| Primary Audience | 25-54 | 18-34 |
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Under 60 seconds. Connect both your Facebook and Instagram accounts, choose your filter rules, and you're done. New Facebook posts will automatically appear on Instagram.
PostOnce automatically adapts your 16:9 Facebook videos to Instagram's preferred 9:16 format, ensuring they look native.
Yes. Use hashtag filters to control which posts crosspost. For example, add #crosspost to Facebook captions and only those posts will go to Instagram. Or exclude specific hashtags to skip certain content.
PostOnce intelligently adapts your captions from Facebook's 63,206 character limit to fit Instagram's 2,200 character limit, preserving your key message.
Start Crossposting Facebook to Instagram
Connect your Facebook and Instagram accounts and start crossposting in minutes. No technical setup required.
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