Crosspost from Reddit to Facebook Automatically
Auto post Reddit to Facebook instantly — no downloads, no re-uploads, no manual work. Just publish on Reddit and your content appears on Facebook.
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The Reddit crosspost button does not reach Facebook
! Reddit's crosspost button only works within Reddit — not to Facebook
+ ! Facebook groups often have their own spam rules similar to subreddits
+ ! Reddit content shared to Facebook as links gets low reach due to Facebook's link suppression
+ ! The audiences are very different — Reddit skews younger and more anonymous
↓ There's an easier way
What You Need to Know
How creators move Reddit content to Facebook
Two approaches that work: share the Reddit discussion link to a Facebook Group where the topic is relevant, then add a sentence explaining why it is relevant to that community.
Or rewrite the Reddit post as a native Facebook post — longer form, with a personal hook and context that the Facebook audience needs.
Facebook groups can be an effective distribution channel for content that performs in niche subreddits, provided the group rules allow it.
Check before posting.
Many Facebook Groups have the same anti-spam rules as subreddits.
Adapting Reddit discussion for Facebook audiences
Reddit content tends to be anonymous and text-heavy.
Facebook performs better with named, personal stories.
If you posted something on Reddit, reframe it for Facebook with 'I' statements and a personal angle.
Add an image — Facebook posts with visuals get significantly more reach.
Strip Reddit-specific references like 'OP,' 'karma,' or 'subreddit' unless you are explaining what Reddit is.
Facebook groups around shared interests can be receptive to Reddit-sourced discussions — just make the content feel native.
PostOnce pushes your Reddit content to Facebook automatically
Post on Reddit and PostOnce handles the distribution to Facebook.
No manual link copying, no format adjustments needed.
PostOnce connects your accounts and keeps both audiences updated.
One post, both platforms covered.
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Features
How PostOnce Handles It
Set up Reddit to Facebook crossposting once. PostOnce automates the rest.
Easy Reddit Crossposting Setup
Connect your Reddit and Facebook 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 Facebook
When you crosspost Reddit to Facebook, PostOnce uploads the actual video file — not a link, not a preview.
Your Reddit content appears as a native Facebook post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every Reddit post belongs on Facebook. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on Facebook ends up there.
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Auto Post to Multiple Platforms
Don't stop at Reddit to Facebook 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 Facebook.
No scheduling, no batching. Publish on Reddit and it appears on Facebook within minutes — fully automated Reddit to Facebook posting.
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Reddit vs Facebook at a Glance
| Spec | ||
|---|---|---|
| Caption Limit | 40,000 chars | 63,206 chars |
| Max Video Length | 15min | 4h |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 1GB | 10GB |
| Carousel Support | Up to 20 items | Up to 10 items |
| Hashtag Strategy | Not used | Unlimited |
| Link Support | Yes | Yes |
| Primary Audience | 18-39 | 25-54 |
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Under 60 seconds. Connect both your Reddit and Facebook accounts, choose your filter rules, and you're done. New Reddit posts will automatically appear on Facebook.
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 Facebook. Or exclude specific hashtags to skip certain content.
Your captions transfer in full since Facebook supports up to 63,206 characters, which accommodates Reddit's 40,000 character limit.
Start Crossposting Reddit to Facebook
Connect your Reddit and Facebook accounts and start crossposting in minutes. No technical setup required.
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