Crosspost from Reddit to LinkedIn Automatically
Auto post Reddit to LinkedIn instantly — no downloads, no re-uploads, no manual work. Just publish on Reddit and your content appears on LinkedIn.
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Reddit and LinkedIn serve completely different professional purposes
! Reddit's culture discourages self-promotion; LinkedIn's culture rewards it
+ ! Reddit content is often anonymous or pseudonymous; LinkedIn is identity-based
+ ! Reddit discussions can source LinkedIn content ideas, but direct crossposting is rare
+ ! LinkedIn posts perform better as native content, not reposts of Reddit threads
↓ There's an easier way
What You Need to Know
How professionals use Reddit to fuel LinkedIn content
Browse relevant subreddits in your field — r/marketing, r/programming, r/finance, whatever fits your niche.
When you see a question getting thousands of upvotes, that is a signal your LinkedIn audience wants the same answer.
Write a LinkedIn post addressing it from your professional experience.
Credit Reddit as the source if relevant — 'I saw this question come up in a Reddit thread this week...' adds authenticity.
For direct crossposting: some creators repurpose LinkedIn posts into Reddit text posts, making sure to reframe for each community's culture.
Writing Reddit-sourced LinkedIn posts that get engagement
LinkedIn rewards professional insight and personal experience.
If you are adapting a Reddit discussion, translate it through your own lens: 'I have seen this exact question come up with my clients...' or 'After years in X, here is my take on what the Reddit crowd is missing.' Add a numbered list or structured takeaways — LinkedIn's algorithm responds well to formatted, scannable content.
End with a question.
Never paste raw Reddit text onto LinkedIn — it reads off-brand for professional audiences.
PostOnce connects Reddit and LinkedIn for automatic crossposting
PostOnce links your Reddit and LinkedIn accounts so your content flows between platforms automatically.
Post on Reddit and it appears on LinkedIn without manual effort.
For creators and professionals maintaining presence on both platforms, PostOnce removes the repetitive work entirely.
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Features
How PostOnce Handles It
Set up Reddit to LinkedIn crossposting once. PostOnce automates the rest.
Easy Reddit Crossposting Setup
Connect your Reddit and LinkedIn 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 LinkedIn
When you crosspost Reddit to LinkedIn, PostOnce uploads the actual video file — not a link, not a preview.
Your Reddit content appears as a native LinkedIn post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every Reddit post belongs on LinkedIn. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on LinkedIn ends up there.
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Auto Post to Multiple Platforms
Don't stop at Reddit to LinkedIn crossposting. Auto post your Reddit 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 Reddit account and automatically crossposts new content to LinkedIn.
No scheduling, no batching. Publish on Reddit and it appears on LinkedIn within minutes — fully automated Reddit to LinkedIn posting.
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Reddit vs LinkedIn at a Glance
| Spec | ||
|---|---|---|
| Caption Limit | 40,000 chars | 3,000 chars |
| Max Video Length | 15min | 10min |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 1GB | 5GB |
| Carousel Support | Up to 20 items | Up to 20 items |
| Hashtag Strategy | Not used | Unlimited |
| Link Support | Yes | Yes |
| Primary Audience | 18-39 | 25-45 |
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Under 60 seconds. Connect both your Reddit and LinkedIn accounts, choose your filter rules, and you're done. New Reddit posts will automatically appear on LinkedIn.
Yes, both platforms use 16:9 as their preferred format, so your videos transfer without any reformatting.
Yes. Use hashtag filters to control which posts crosspost. For example, add #crosspost to Reddit captions and only those posts will go to LinkedIn. Or exclude specific hashtags to skip certain content.
PostOnce intelligently adapts your captions from Reddit's 40,000 character limit to fit LinkedIn's 3,000 character limit, preserving your key message.
Start Crossposting Reddit to LinkedIn
Connect your Reddit and LinkedIn accounts and start crossposting in minutes. No technical setup required.
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