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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

= too much manual work

↓ There's an easier way

What You Need to Know

01

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.

02

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.

03

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.

Skip the manual work

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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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Setup flow

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.

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Screenshot: Native post

Custom 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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Filter rules

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.

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Real-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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Automation

LinkedIn vs Reddit at a Glance

SpecLinkedInReddit
Caption Limit3,000 chars40,000 chars
Max Video Length10min15min
Preferred Aspect Ratio16:916:9
Max Video File Size5GB1GB
Carousel SupportUp to 20 itemsUp to 20 items
Hashtag StrategyUnlimitedNot used
Link SupportYesYes
Primary Audience25-4518-39

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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