Crosspost from Bluesky to Twitter Automatically
Auto post Bluesky to Twitter instantly — no downloads, no re-uploads, no manual work. Just publish on Bluesky and your content appears on Twitter.
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Posting on both Bluesky and X at the same time
! Many users are on both platforms simultaneously during the Twitter migration wave
+ ! Character limits differ: Bluesky is 300, Twitter/X is 280
+ ! Bluesky does not use hashtags the same way Twitter does
+ ! Thread format works on both, but the interaction model differs
↓ There's an easier way
What You Need to Know
How creators manage the Bluesky-Twitter dual posting routine
The simplest manual version: write a post under 280 characters on Bluesky, copy it, paste it into Twitter with 1-2 relevant hashtags added.
Tools like Nuelink, Microposter, and Buffer can automate this so every skeet is mirrored to X automatically.
The Croissant app and OpenVibe app are also specifically built for Bluesky + Threads + Twitter crossposting.
Many creators set up the automation, then occasionally customize per-platform when a post is platform-specific in tone.
Making your tweets feel native, not mirror-posted
Twitter/X audiences respond to different cues than Bluesky.
X still has a strong hashtag culture; use 1-2 relevant ones.
If your skeet mentions Bluesky-specific concepts (AT Protocol, starter packs, custom feeds), rephrase for Twitter where those references will confuse followers.
On X, quote-tweeting and replies drive engagement differently than Bluesky's reply threading.
Treat crossposted tweets as a baseline — then engage natively on each platform for best results.
PostOnce syncs your skeets to X automatically
Post on Bluesky and PostOnce mirrors it to Twitter/X.
No app switching, no manual duplication.
PostOnce handles character limit checking and distributes your Bluesky content in real time.
Stay on Bluesky — your X audience stays updated without extra effort.
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Features
How PostOnce Handles It
Set up Bluesky to Twitter crossposting once. PostOnce automates the rest.
Easy Bluesky Crossposting Setup
Connect your Bluesky and Twitter 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 Twitter
When you crosspost Bluesky to Twitter, PostOnce uploads the actual video file — not a link, not a preview.
Your Bluesky content appears as a native Twitter post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every Bluesky post belongs on Twitter. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on Twitter ends up there.
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Auto Post to Multiple Platforms
Don't stop at Bluesky to Twitter crossposting. Auto post your Bluesky 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 Bluesky account and automatically crossposts new content to Twitter.
No scheduling, no batching. Publish on Bluesky and it appears on Twitter within minutes — fully automated Bluesky to Twitter posting.
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Bluesky vs Twitter at a Glance
| Spec | Bluesky | |
|---|---|---|
| Caption Limit | 300 chars | 280 chars |
| Max Video Length | 1min | 2min |
| Preferred Aspect Ratio | 16:9 | 16:9 |
| Max Video File Size | 50MB | 512MB |
| Carousel Support | Up to 4 items | Up to 4 items |
| Hashtag Strategy | Unlimited | Unlimited |
| Link Support | Yes | Yes |
| Primary Audience | 20-40 | 18-44 |
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Under 60 seconds. Connect both your Bluesky and Twitter accounts, choose your filter rules, and you're done. New Bluesky posts will automatically appear on Twitter.
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 Bluesky captions and only those posts will go to Twitter. Or exclude specific hashtags to skip certain content.
PostOnce intelligently adapts your captions from Bluesky's 300 character limit to fit Twitter's 280 character limit, preserving your key message.
Start Crossposting Bluesky to Twitter
Connect your Bluesky and Twitter accounts and start crossposting in minutes. No technical setup required.
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