Automatically Post TikTok to LinkedIn: Complete Guide
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TikTok reaches Gen Z and young Millennials while LinkedIn connects with Professionals and B2B decision-makers, letting you expand to a new audience segment. Your TikTok 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 TikTok to LinkedIn automation. Learn how to crosspost from TikTok to LinkedIn or repurpose your content for maximum reach.
TikTok to LinkedIn Content Compatibility
Video
Needs Adaptation
Images
Direct Transfer
Text/Captions
Needs Adaptation
TikTok vs LinkedIn: Platform Specs
| Spec | TikTok | |
|---|---|---|
| Caption Limit | 4,000 chars | 3,000 chars |
| Max Video Length | 10min | 10min |
| Preferred Aspect Ratio | 9:16 | 16:9 |
| Max Video File Size | 4GB | 5GB |
| Carousel Support | Up to 35 items | Up to 20 items |
| Hashtag Strategy | Unlimited | Unlimited |
| Link Support | No | Yes |
| Primary Audience | 16-34 | 25-45 |
Why Automate TikTok to LinkedIn?
Share your TikTok short videos on LinkedIn to double your video views without extra filming
Expand short TikTok clips into longer LinkedIn content for deeper audience engagement
Repurpose TikTok content for your professional LinkedIn audience to build industry authority
Manual Posting vs Automated Distribution
Manual Method
- ✗Upload the same video to LinkedIn after posting to TikTok
- ✗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 TikTok like normal—we handle LinkedIn
- ✓Captions automatically adapted for LinkedIn
- ✓Stay in your favorite platform's workflow
- ✓Every TikTok 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 TikTok to LinkedIn Automation
Connect TikTok and LinkedIn
Link both social accounts to PostOnce using secure OAuth authorization.
TikTok uses platform-specific 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 TikTok allows longer captions (4,000 chars) than LinkedIn (3,000 chars), you may want to review caption truncation settings.
Post on TikTok as usual
Create content on TikTok and PostOnce handles LinkedIn distribution.
Your 9:16 TikTok content is automatically reformatted to 16:9 for LinkedIn.
Flexible Automation Options
Control exactly how your TikTok content gets distributed to LinkedIn with powerful automation rules.
Post Everything
Every TikTok 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 TikTok to LinkedIn workflow needs
Most creators use hashtag filtering to maintain control over their crossposting workflow. For instance, you might want all your TikTok tutorials to go to LinkedIn, but keep personal content separate. Simply add a specific hashtag like #autopost to your TikTok caption, and only those posts will be distributed.
If you want to repurpose content from TikTok 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
- ✓Carousel/multi-image posts are supported on both platforms
Needs Adaptation
- ~Video aspect ratio needs to change from 9:16 to 16:9
- ~Captions may need shortening (4,000 chars to 3,000 chars)
- ~Hashtag strategy differs between TikTok and LinkedIn
- ~Carousels may need to be trimmed from 35 to 20 items
Doesn't Transfer
- ✗Original music/audio from TikTok won't carry over
- ✗Duet/stitch features are TikTok-only
- ✗Stories format doesn't exist on LinkedIn
- ✗TikTok doesn't support caption links, so no links will transfer
Known Limitations
- ⚠Captions over 3,000 characters will be shortened for LinkedIn
- ⚠Licensed music from TikTok cannot be transferred to LinkedIn
- ⚠Duet/stitch content is TikTok-specific and won't transfer
- ⚠TikTok Stories cannot be crossposted to LinkedIn
- ⚠Carousels with more than 20 items will be truncated on LinkedIn
- ⚠TikTok doesn't support caption links, so no links will be included in LinkedIn posts
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. Your TikTok videos will fit within these limits.
Yes. PostOnce works with both personal and business accounts on both TikTok and LinkedIn. Connect via OAuth authorization—your credentials are never stored.
TikTok's peak engagement is 7-9 AM, 12-3 PM, 7-11 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 TikTok.
Hashtags boost discoverability via For You Page algorithm. 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 TikTok, it's automatically shared to LinkedIn—no per-post limits on automation.
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