Automatically Post LinkedIn to TikTok: Complete Guide
Set up once and automatically upload, share, and post your LinkedIn content to TikTok forever.
Stop manually posting to multiple platforms. Let automation handle your TikTok distribution while you focus on creating great content.
7-day free trial • Cancel anytime
LinkedIn reaches Professionals and B2B decision-makers while TikTok connects with Gen Z and young Millennials, letting you expand to a new audience segment. Your LinkedIn content format works on TikTok, 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 LinkedIn to TikTok automation. Learn how to crosspost from LinkedIn to TikTok or repurpose your content for maximum reach.
LinkedIn to TikTok Content Compatibility
Video
Needs Adaptation
Images
Direct Transfer
Text/Captions
Direct Transfer
LinkedIn vs TikTok: Platform Specs
| Spec | TikTok | |
|---|---|---|
| Caption Limit | 3,000 chars | 4,000 chars |
| Max Video Length | 10min | 10min |
| Preferred Aspect Ratio | 16:9 | 9:16 |
| Max Video File Size | 5GB | 4GB |
| Carousel Support | Up to 20 items | Up to 35 items |
| Hashtag Strategy | Unlimited | Unlimited |
| Link Support | Yes | No |
| Primary Audience | 25-45 | 16-34 |
Why Automate LinkedIn to TikTok?
Clip highlights from long-form LinkedIn content into short TikTok posts
Bring your professional LinkedIn insights to TikTok's more casual audience
Build a consistent brand presence across LinkedIn and TikTok with automated distribution
Manual Posting vs Automated Distribution
Manual Method
- ✗Upload the same video to TikTok after posting to LinkedIn
- ✗Copy and reformat captions for each platform
- ✗Constantly context-switch between apps
- ✗Risk forgetting to post to TikTok
- ✗Spend 10-15 minutes per post managing distribution
- ✗Miss peak posting times on TikTok
PostOnce Automation
- ✓Post to LinkedIn like normal—we handle TikTok
- ✓Captions automatically adapted for TikTok
- ✓Stay in your favorite platform's workflow
- ✓Every LinkedIn post automatically appears on TikTok
- ✓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 LinkedIn to TikTok Automation
Connect LinkedIn and TikTok
Link both social accounts to PostOnce using secure OAuth authorization.
LinkedIn uses standard OAuth and TikTok requires platform-specific authorization. Both connect in seconds.
Configure your automation rules
Choose to crosspost everything or filter by hashtags, content type, or custom rules.
Your LinkedIn captions fit within TikTok's limits, so default settings work great.
Post on LinkedIn as usual
Create content on LinkedIn and PostOnce handles TikTok distribution.
Your 16:9 LinkedIn content is automatically reformatted to 9:16 for TikTok.
Flexible Automation Options
Control exactly how your LinkedIn content gets distributed to TikTok with powerful automation rules.
Post Everything
Every LinkedIn post automatically goes to TikTok
Filter by Hashtag
Use specific hashtags to control what gets crossposted to TikTok
Custom Rules
Set advanced filters based on your LinkedIn to TikTok workflow needs
Most creators use hashtag filtering to maintain control over their crossposting workflow. For instance, you might want all your LinkedIn tutorials to go to TikTok, but keep personal content separate. Simply add a specific hashtag like #autopost to your LinkedIn caption, and only those posts will be distributed.
If you want to repurpose content from LinkedIn to TikTok, 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
- ✓Carousel/multi-image posts are supported on both platforms
- ✓Captions fit within the destination's character limit without truncation
Needs Adaptation
- ~Video aspect ratio needs to change from 16:9 to 9:16
- ~Hashtag strategy differs between LinkedIn and TikTok
Doesn't Transfer
- ✗Polls cannot be recreated on TikTok
- ✗Clickable links in captions are not supported on TikTok
Known Limitations
- ⚠Most LinkedIn content works well on TikTok with minor formatting adjustments
Frequently Asked Questions
TikTok supports videos up to 10 minutes long, 4GB file size, in 9:16, 1:1 aspect ratios. Captions can be up to 4,000 characters. Your LinkedIn videos will fit within these limits.
Yes. PostOnce works with both personal and business accounts on both LinkedIn and TikTok. Connect via OAuth authorization—your credentials are never stored.
LinkedIn's peak engagement is 7-8 AM, 12 PM, 5-6 PM (weekdays), while TikTok's peak is 7-9 AM, 12-3 PM, 7-11 PM. PostOnce can publish to TikTok at optimal times regardless of when you post on LinkedIn.
3-5 industry-relevant hashtags recommended for reach. For TikTok: Hashtags boost discoverability via For You Page algorithm. 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 LinkedIn, it's automatically shared to TikTok—no per-post limits on automation.
Ready to Automate Your LinkedIn to TikTok?
Join thousands of creators who've automated their social media distribution. Set up once, post forever.
7-day free trial • No credit card required • Cancel anytime