Crosspost from YouTube to Reddit Automatically
Auto post YouTube to Reddit instantly — no downloads, no re-uploads, no manual work. Just publish on YouTube and your content appears on Reddit.
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Sharing YouTube videos on Reddit: it depends entirely on the subreddit
! Most subreddits have strict self-promotion rules — many ban YouTube links outright
+ ! Reddit's spam filters flag accounts that only post their own YouTube links
+ ! A YouTube link post on Reddit shows a thumbnail that links out, not an embedded player
+ ! Subreddit-specific rules vary widely — always check before posting
+ ! Reddit's 9% rule means only 10% of your posts should be self-promotional
↓ There's an easier way
What You Need to Know
How to share YouTube content on Reddit without getting removed
When a subreddit allows YouTube links: create a link post using the YouTube URL directly — Reddit will generate a thumbnail from the video.
Write a post title that matches the subreddit's culture, not your video's SEO title.
If the subreddit prefers discussion, post the YouTube link with context in the comments rather than as the headline post.
Some creators post a text summary of the video's key points as a self post, then link the YouTube video as 'full video in comments.' This approach often gets better reception than a raw link post.
What actually gets upvotes on Reddit vs. YouTube metrics
Reddit rewards content that adds value to a specific community, not content that maximizes watch time or subscribers.
A title optimized for YouTube SEO ('I Tried X for 30 Days — Here's What Happened') will often underperform a title written for Reddit's more direct tone.
Comments and upvotes on Reddit are driven by how much the community genuinely cares about the topic — niche subreddits with high engagement are better targets than large general ones.
Respond to every comment on your post to boost engagement signals.
PostOnce helps you share YouTube content to Reddit consistently
PostOnce can automatically share your new YouTube videos to designated subreddits when you publish — with a post title adapted for Reddit's community norms rather than your YouTube SEO title.
You stay consistent without manually tracking every upload.
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Features
How PostOnce Handles It
Set up YouTube to Reddit crossposting once. PostOnce automates the rest.
Easy YouTube Crossposting Setup
Connect your YouTube 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 YouTube to Reddit, PostOnce uploads the actual video file — not a link, not a preview.
Your YouTube content appears as a native Reddit post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every YouTube 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 YouTube to Reddit crossposting. Auto post your YouTube 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 YouTube account and automatically crossposts new content to Reddit.
No scheduling, no batching. Publish on YouTube and it appears on Reddit within minutes — fully automated YouTube to Reddit posting.
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YouTube vs Reddit at a Glance
| Spec | YouTube | |
|---|---|---|
| Caption Limit | 5,000 chars | 40,000 chars |
| Max Video Length | 12h | 15min |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 256GB | 1GB |
| Carousel Support | No | Up to 20 items |
| Hashtag Strategy | Up to 60 | Not used |
| Link Support | Yes | Yes |
| Primary Audience | 18-49 | 18-39 |
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Under 60 seconds. Connect both your YouTube and Reddit accounts, choose your filter rules, and you're done. New YouTube 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 YouTube 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 YouTube's 5,000 character limit.
Start Crossposting YouTube to Reddit
Connect your YouTube and Reddit accounts and start crossposting in minutes. No technical setup required.
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