Automatically Post Facebook to LinkedIn: Complete Guide
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Facebook reaches Millennials and Gen X while LinkedIn connects with Professionals and B2B decision-makers, letting you expand to a new audience segment. Your Facebook content format works on LinkedIn, so you can share without creating entirely new content. Whether you want to auto-post everything or filter by hashtag, this guide covers everything about Facebook to LinkedIn automation. Learn how to crosspost from Facebook to LinkedIn or repurpose your content for maximum reach.
Facebook to LinkedIn Content Compatibility
Video
Needs Adaptation
Images
Direct Transfer
Text/Captions
Truncated
Facebook vs LinkedIn: Platform Specs
| Spec | ||
|---|---|---|
| Caption Limit | 63,206 chars | 3,000 chars |
| Max Video Length | 4h | 10min |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 10GB | 5GB |
| Carousel Support | Up to 10 items | Up to 20 items |
| Hashtag Strategy | Unlimited | Unlimited |
| Link Support | Yes | Yes |
| Primary Audience | 25-54 | 25-45 |
Why Automate Facebook to LinkedIn?
Repurpose Facebook content for your professional LinkedIn audience to build industry authority
Accompany your Facebook visuals with text-driven posts on LinkedIn for storytelling
Build a consistent brand presence across Facebook and LinkedIn with automated distribution
Manual Posting vs Automated Distribution
Manual Method
- ✗Upload the same video to LinkedIn after posting to Facebook
- ✗Copy and reformat captions for each platform
- ✗Constantly context-switch between apps
- ✗Risk forgetting to post to LinkedIn
- ✗Spend 10-15 minutes per post managing distribution
- ✗Miss peak posting times on LinkedIn
PostOnce Automation
- ✓Post to Facebook like normal—we handle LinkedIn
- ✓Captions automatically adapted for LinkedIn
- ✓Stay in your favorite platform's workflow
- ✓Every Facebook post automatically appears on LinkedIn
- ✓Set up once in under 60 seconds
- ✓Consistent posting schedule maintained automatically
Manual posting might work when you're just starting out, but as your content volume grows, automation becomes essential. The difference isn't just time saved—it's the ability to maintain a consistent multi-platform presence without burning out.
How to Set Up Facebook to LinkedIn Automation
Connect Facebook and LinkedIn
Link both social accounts to PostOnce using secure OAuth authorization.
Facebook uses standard OAuth and LinkedIn requires standard authorization. Both connect in seconds.
Configure your automation rules
Choose to crosspost everything or filter by hashtags, content type, or custom rules.
Since Facebook allows longer captions (63,206 chars) than LinkedIn (3,000 chars), you may want to review caption truncation settings.
Post on Facebook as usual
Create content on Facebook and PostOnce handles LinkedIn distribution.
Both platforms use 16:9 format, so your content transfers seamlessly.
Flexible Automation Options
Control exactly how your Facebook content gets distributed to LinkedIn with powerful automation rules.
Post Everything
Every Facebook post automatically goes to LinkedIn
Filter by Hashtag
Use specific hashtags to control what gets crossposted to LinkedIn
Custom Rules
Set advanced filters based on your Facebook to LinkedIn workflow needs
Most creators use hashtag filtering to maintain control over their crossposting workflow. For instance, you might want all your Facebook tutorials to go to LinkedIn, but keep personal content separate. Simply add a specific hashtag like #autopost to your Facebook caption, and only those posts will be distributed.
If you want to repurpose content from Facebook to LinkedIn, you can also customize how captions, formats, and media are adapted for each platform's unique audience and requirements.
What to Expect
Works Well
- ✓Photos and images work well on both platforms
- ✓Text-based posts work natively on both platforms
- ✓Both platforms prefer 16:9 video, so no reformatting needed
- ✓Links in posts are supported on both platforms
Needs Adaptation
- ~Captions may need shortening (63,206 chars to 3,000 chars)
- ~Videos over 10 minutes need trimming for LinkedIn
- ~Hashtag strategy differs between Facebook and LinkedIn
Doesn't Transfer
- ✗Stories format doesn't exist on LinkedIn
Known Limitations
- ⚠Facebook videos longer than 10 minutes need to be trimmed for LinkedIn
- ⚠Captions over 3,000 characters will be shortened for LinkedIn
- ⚠Facebook Stories cannot be crossposted to LinkedIn
Frequently Asked Questions
LinkedIn supports videos up to 10 minutes long, 5GB file size, in 16:9, 1:1, 9:16 aspect ratios. Captions can be up to 3,000 characters. Since Facebook allows up to 4 hours, longer videos will need trimming.
Yes. PostOnce works with both personal and business accounts on both Facebook and LinkedIn. Connect via OAuth authorization—your credentials are never stored.
Facebook's peak engagement is 1-4 PM, 6-9 PM, while LinkedIn's peak is 7-8 AM, 12 PM, 5-6 PM (weekdays). PostOnce can publish to LinkedIn at optimal times regardless of when you post on Facebook.
Hashtags have minimal impact; 1-2 relevant hashtags max. For LinkedIn: 3-5 industry-relevant hashtags recommended for reach. PostOnce lets you customize hashtag handling—keep them, remove them, or set platform-specific hashtag strategies.
PostOnce handles unlimited crossposting within your plan's limits. Every time you post on Facebook, it's automatically shared to LinkedIn—no per-post limits on automation.
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