Automatically Post Reddit to Twitter: Complete Guide
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Reddit reaches Young adults interested in niche communities while Twitter connects with News-savvy adults and professionals, letting you expand to a new audience segment. Your Reddit content format works on Twitter, so you can share without creating entirely new content. Whether you want to auto-post everything or filter by hashtag, this guide covers everything about Reddit to Twitter automation. Learn how to crosspost from Reddit to Twitter or repurpose your content for maximum reach.
Reddit to Twitter Content Compatibility
Video
Needs Adaptation
Images
Needs Adaptation
Text/Captions
Truncated
Reddit vs Twitter: Platform Specs
| Spec | ||
|---|---|---|
| Caption Limit | 40,000 chars | 280 chars |
| Max Video Length | 15min | 2min |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 1GB | 512MB |
| Carousel Support | Up to 20 items | Up to 4 items |
| Hashtag Strategy | Not used | Unlimited |
| Link Support | Yes | Yes |
| Primary Audience | 18-39 | 18-44 |
Why Automate Reddit to Twitter?
Clip highlights from long-form Reddit content into short Twitter posts
Accompany your Reddit visuals with text-driven posts on Twitter for storytelling
Build a consistent brand presence across Reddit and Twitter with automated distribution
Manual Posting vs Automated Distribution
Manual Method
- ✗Upload the same video to Twitter after posting to Reddit
- ✗Copy and reformat captions for each platform
- ✗Constantly context-switch between apps
- ✗Risk forgetting to post to Twitter
- ✗Spend 10-15 minutes per post managing distribution
- ✗Miss peak posting times on Twitter
PostOnce Automation
- ✓Post to Reddit like normal—we handle Twitter
- ✓Captions automatically adapted for Twitter
- ✓Stay in your favorite platform's workflow
- ✓Every Reddit post automatically appears on Twitter
- ✓Set up once in under 60 seconds
- ✓Consistent posting schedule maintained automatically
Manual posting might work when you're just starting out, but as your content volume grows, automation becomes essential. The difference isn't just time saved—it's the ability to maintain a consistent multi-platform presence without burning out.
How to Set Up Reddit to Twitter Automation
Connect Reddit and Twitter
Link both social accounts to PostOnce using secure OAuth authorization.
Reddit uses standard OAuth and Twitter requires standard authorization. Both connect in seconds.
Configure your automation rules
Choose to crosspost everything or filter by hashtags, content type, or custom rules.
Since Reddit allows longer captions (40,000 chars) than Twitter (280 chars), you may want to review caption truncation settings.
Post on Reddit as usual
Create content on Reddit and PostOnce handles Twitter distribution.
Both platforms use 16:9 format, so your content transfers seamlessly.
Flexible Automation Options
Control exactly how your Reddit content gets distributed to Twitter with powerful automation rules.
Post Everything
Every Reddit post automatically goes to Twitter
Filter by Hashtag
Use specific hashtags to control what gets crossposted to Twitter
Custom Rules
Set advanced filters based on your Reddit to Twitter workflow needs
Most creators use hashtag filtering to maintain control over their crossposting workflow. For instance, you might want all your Reddit tutorials to go to Twitter, but keep personal content separate. Simply add a specific hashtag like #autopost to your Reddit caption, and only those posts will be distributed.
If you want to repurpose content from Reddit to Twitter, you can also customize how captions, formats, and media are adapted for each platform's unique audience and requirements.
What to Expect
Works Well
- ✓Photos and images work well on both platforms
- ✓Text-based posts work natively on both platforms
- ✓Both platforms prefer 16:9 video, so no reformatting needed
- ✓Links in posts are supported on both platforms
Needs Adaptation
- ~Captions may need shortening (40,000 chars to 280 chars)
- ~Videos over 2 minutes need trimming for Twitter
- ~Hashtag strategy differs between Reddit and Twitter
- ~Carousels may need to be trimmed from 20 to 4 items
Doesn't Transfer
- ✗Most content elements transfer successfully
Known Limitations
- ⚠Reddit videos longer than 2 minutes need to be trimmed for Twitter
- ⚠Captions over 280 characters will be shortened for Twitter
- ⚠Carousels with more than 4 items will be truncated on Twitter
Frequently Asked Questions
Twitter supports videos up to 2 minutes long, 512MB file size, in 16:9, 1:1 aspect ratios. Captions can be up to 280 characters. Since Reddit allows up to 15 minutes, longer videos will need trimming.
Yes. PostOnce works with both personal and business accounts on both Reddit and Twitter. Connect via OAuth authorization—your credentials are never stored.
Reddit's peak engagement is 6-8 AM, 12-2 PM (US timezones), while Twitter's peak is 8-10 AM, 12-1 PM (weekdays). PostOnce can publish to Twitter at optimal times regardless of when you post on Reddit.
Hashtags are not used on Reddit. For Twitter: 1-2 hashtags per tweet; more reduces engagement. PostOnce lets you customize hashtag handling—keep them, remove them, or set platform-specific hashtag strategies.
PostOnce handles unlimited crossposting within your plan's limits. Every time you post on Reddit, it's automatically shared to Twitter—no per-post limits on automation.
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