Crosspost from Reddit to YouTube Automatically
Auto post Reddit to YouTube instantly — no downloads, no re-uploads, no manual work. Just publish on Reddit and your content appears on YouTube.
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Using Reddit to grow YouTube (and vice versa) without getting banned
! Reddit communities often ban self-promotional YouTube links
+ ! YouTube cannot receive Reddit posts as content — video is required
+ ! Cross-promotion between the two requires community trust built first
+ ! YouTube community posts can share Reddit-style discussion, but it is a one-way street
↓ There's an easier way
What You Need to Know
How YouTubers actually use Reddit to drive views
The effective approach: post genuine discussion threads in relevant subreddits about topics your videos cover.
Include your video only if the community explicitly allows it and if it directly answers a common question.
A post titled 'I spent 30 days testing X — here are the results' with the video in the comments performs better than a raw 'check out my new video' link post.
For the reverse workflow, subreddit discussions can become YouTube video topics — mine r/AskReddit or niche subreddits for questions that your audience is genuinely asking.
Making your Reddit posts work for YouTube discovery
Treat subreddit posts as standalone value, not teasers.
Give the full answer, the full opinion, the full story — then mention the video as additional context.
Communities where this works well: r/NewTubers for creator advice, niche topic subreddits where your video content matches exactly.
Avoid r/videos unless you have millions of subscribers.
On YouTube's end, add a Reddit community link in your channel description and encourage comments that could turn into subreddit threads.
PostOnce automates the Reddit-YouTube content flow
PostOnce connects your Reddit account with YouTube and handles cross-platform posting automatically.
Your Reddit posts reach your YouTube audience, and your YouTube content gets announced on Reddit without manual effort.
Set up once and stay focused on creating.
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Features
How PostOnce Handles It
Set up Reddit to YouTube crossposting once. PostOnce automates the rest.
Easy Reddit Crossposting Setup
Connect your Reddit and YouTube 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 YouTube
When you crosspost Reddit to YouTube, PostOnce uploads the actual video file — not a link, not a preview.
Your Reddit content appears as a native YouTube post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every Reddit post belongs on YouTube. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on YouTube ends up there.
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Auto Post to Multiple Platforms
Don't stop at Reddit to YouTube 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 YouTube.
No scheduling, no batching. Publish on Reddit and it appears on YouTube within minutes — fully automated Reddit to YouTube posting.
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Reddit vs YouTube at a Glance
| Spec | YouTube | |
|---|---|---|
| Caption Limit | 40,000 chars | 5,000 chars |
| Max Video Length | 15min | 12h |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 1GB | 256GB |
| Carousel Support | Up to 20 items | No |
| Hashtag Strategy | Not used | Up to 60 |
| Link Support | Yes | Yes |
| Primary Audience | 18-39 | 18-49 |
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Under 60 seconds. Connect both your Reddit and YouTube accounts, choose your filter rules, and you're done. New Reddit posts will automatically appear on YouTube.
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 YouTube. Or exclude specific hashtags to skip certain content.
PostOnce intelligently adapts your captions from Reddit's 40,000 character limit to fit YouTube's 5,000 character limit, preserving your key message.
Start Crossposting Reddit to YouTube
Connect your Reddit and YouTube accounts and start crossposting in minutes. No technical setup required.
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