Crosspost from LinkedIn to Reddit Automatically
Auto post LinkedIn to Reddit instantly — no downloads, no re-uploads, no manual work. Just publish on LinkedIn and your content appears on Reddit.
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The Reddit reality: LinkedIn posts will get downvoted if you're not careful
! Reddit communities have strict no-self-promotion rules — LinkedIn-style content reads as spam
+ ! Reddit users will downvote anything that looks like marketing or thought leadership posturing
+ ! Each subreddit has different rules; what works in r/marketing fails in r/entrepreneur
+ ! LinkedIn's professional authority framing doesn't work on Reddit's anonymous, skeptical culture
↓ There's an easier way
What You Need to Know
How to adapt LinkedIn content for Reddit communities
The key reframe: LinkedIn posts are about you.
Reddit posts are about the community.
Take a LinkedIn insight and remove all self-referential framing.
Instead of 'Here's what I learned building my startup,' write 'Here's what worked for our team's go-to-market, happy to share specifics in comments.' Lead with a question or a data point, not a personal story.
Find the subreddit where your audience actually lives (r/marketing, r/SaaS, r/smallbusiness, etc.) and read the top posts before submitting.
One creator documented taking a LinkedIn post viral on Reddit with 110K impressions — by stripping all the LinkedIn framing and presenting the insight as a community discussion starter.
What Reddit communities actually upvote
Reddit rewards specificity over general advice.
'We increased conversion by 23% by changing this one form field' beats 'How to improve your conversion rate.' Posts with data, unusual findings, or genuine mistakes you made and recovered from perform best.
Ask a real question at the end — Reddit engagement comes from comments, and posts that prompt genuine discussion get pushed up.
Title format matters: subreddits like r/marketing heavily favor titles that read like a discovery or question, not a LinkedIn headline.
Cross-post LinkedIn content to Reddit without the spam risk
PostOnce automates the crosspost from LinkedIn to Reddit with community-appropriate formatting.
Your LinkedIn post gets restructured into a Reddit-native format — no promotional framing, no professional authority signals.
Choose which subreddits to target, set the rule, and PostOnce handles the posting.
Your LinkedIn content reaches Reddit's communities without looking like a repurpose job.
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Features
How PostOnce Handles It
Set up LinkedIn to Reddit crossposting once. PostOnce automates the rest.
Easy LinkedIn Crossposting Setup
Connect your LinkedIn and Reddit 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 Reddit
When you crosspost LinkedIn to Reddit, PostOnce uploads the actual video file — not a link, not a preview.
Your LinkedIn content appears as a native Reddit post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every LinkedIn post belongs on Reddit. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on Reddit ends up there.
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Auto Post to Multiple Platforms
Don't stop at LinkedIn to Reddit crossposting. Auto post your LinkedIn content to YouTube Shorts, Facebook, LinkedIn, Threads, and more — all at once.
One post, everywhere. Each platform gets a native upload with adapted formatting.
Start your free trialReal-Time Automation
PostOnce monitors your LinkedIn account and automatically crossposts new content to Reddit.
No scheduling, no batching. Publish on LinkedIn and it appears on Reddit within minutes — fully automated LinkedIn to Reddit posting.
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LinkedIn vs Reddit at a Glance
| Spec | ||
|---|---|---|
| Caption Limit | 3,000 chars | 40,000 chars |
| Max Video Length | 10min | 15min |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 5GB | 1GB |
| Carousel Support | Up to 20 items | Up to 20 items |
| Hashtag Strategy | Unlimited | Not used |
| Link Support | Yes | Yes |
| Primary Audience | 25-45 | 18-39 |
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Frequently Asked Questions
Under 60 seconds. Connect both your LinkedIn and Reddit accounts, choose your filter rules, and you're done. New LinkedIn posts will automatically appear on Reddit.
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 LinkedIn captions and only those posts will go to Reddit. Or exclude specific hashtags to skip certain content.
Your captions transfer in full since Reddit supports up to 40,000 characters, which accommodates LinkedIn's 3,000 character limit.
Start Crossposting LinkedIn to Reddit
Connect your LinkedIn and Reddit accounts and start crossposting in minutes. No technical setup required.
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