Automatically Post LinkedIn to Threads: Complete Guide
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LinkedIn reaches Professionals and B2B decision-makers while Threads connects with Instagram users looking for text-based discussion, letting you expand to a new audience segment. Your LinkedIn content format works on Threads, 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 Threads automation. Learn how to crosspost from LinkedIn to Threads or repurpose your content for maximum reach.
LinkedIn to Threads Content Compatibility
Video
Needs Adaptation
Images
Direct Transfer
Text/Captions
Truncated
LinkedIn vs Threads: Platform Specs
| Spec | Threads | |
|---|---|---|
| Caption Limit | 3,000 chars | 500 chars |
| Max Video Length | 10min | 5min |
| Preferred Aspect Ratio | 16:9 | 9:16 |
| Max Video File Size | 5GB | 1GB |
| Carousel Support | Up to 20 items | Up to 20 items |
| Hashtag Strategy | Unlimited | Up to 1 |
| Link Support | Yes | Yes |
| Primary Audience | 25-45 | 18-34 |
Why Automate LinkedIn to Threads?
Clip highlights from long-form LinkedIn content into short Threads posts
Bring your professional LinkedIn insights to Threads's more casual audience
Accompany your LinkedIn visuals with text-driven posts on Threads for storytelling
Manual Posting vs Automated Distribution
Manual Method
- ✗Upload the same video to Threads after posting to LinkedIn
- ✗Copy and reformat captions for each platform
- ✗Constantly context-switch between apps
- ✗Risk forgetting to post to Threads
- ✗Spend 10-15 minutes per post managing distribution
- ✗Miss peak posting times on Threads
PostOnce Automation
- ✓Post to LinkedIn like normal—we handle Threads
- ✓Captions automatically adapted for Threads
- ✓Stay in your favorite platform's workflow
- ✓Every LinkedIn post automatically appears on Threads
- ✓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 Threads Automation
Connect LinkedIn and Threads
Link both social accounts to PostOnce using secure OAuth authorization.
LinkedIn uses standard OAuth and Threads 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 LinkedIn allows longer captions (3,000 chars) than Threads (500 chars), you may want to review caption truncation settings.
Post on LinkedIn as usual
Create content on LinkedIn and PostOnce handles Threads distribution.
Your 16:9 LinkedIn content is automatically reformatted to 9:16 for Threads.
Flexible Automation Options
Control exactly how your LinkedIn content gets distributed to Threads with powerful automation rules.
Post Everything
Every LinkedIn post automatically goes to Threads
Filter by Hashtag
Use specific hashtags to control what gets crossposted to Threads
Custom Rules
Set advanced filters based on your LinkedIn to Threads 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 Threads, 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 Threads, 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
- ✓Text-based posts work natively on both platforms
- ✓Links in posts are supported on both platforms
Needs Adaptation
- ~Video aspect ratio needs to change from 16:9 to 9:16
- ~Captions may need shortening (3,000 chars to 500 chars)
- ~Videos over 5 minutes need trimming for Threads
- ~Hashtag strategy differs between LinkedIn and Threads
Doesn't Transfer
- ✗Most content elements transfer successfully
Known Limitations
- ⚠LinkedIn videos longer than 5 minutes need to be trimmed for Threads
- ⚠Captions over 500 characters will be shortened for Threads
Frequently Asked Questions
Threads supports videos up to 5 minutes long, 1GB file size, in 9:16, 1:1, 16:9 aspect ratios. Captions can be up to 500 characters. Since LinkedIn allows up to 10 minutes, longer videos will need trimming.
Yes. PostOnce works with both personal and business accounts on both LinkedIn and Threads. Connect via OAuth authorization—your credentials are never stored.
LinkedIn's peak engagement is 7-8 AM, 12 PM, 5-6 PM (weekdays), while Threads's peak is 7-9 AM, 12-2 PM, 6-9 PM. PostOnce can publish to Threads at optimal times regardless of when you post on LinkedIn.
3-5 industry-relevant hashtags recommended for reach. For Threads: Hashtag-like topics supported; one topic tag per post. 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 Threads—no per-post limits on automation.
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