Crosspost from Bluesky to Threads Automatically

Auto post Bluesky to Threads instantly — no downloads, no re-uploads, no manual work. Just publish on Bluesky and your content appears on Threads.

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Bluesky and Threads: the most natural crosspost pair

! Both are text-first microblogging platforms, making them the most compatible pairing

+ ! Bluesky (decentralized, AT Protocol) vs Threads (Meta/Instagram-connected) — different philosophies

+ ! Threads requires an Instagram account; Bluesky does not

+ ! Character limits: Bluesky 300, Threads 500

= too much manual work

↓ There's an easier way

What You Need to Know

01

How creators keep Bluesky and Threads in sync

Tools like OpenVibe, Croissant, Nuelink, and Fedica all support simultaneous posting to Bluesky and Threads.

The workflow: write once, publish to both.

For manual cross-posting: copy the skeet text, paste into Threads, adjust if needed.

Threads has a 500-character limit (versus Bluesky's 300), so you have room to add context.

Hashtags work differently on Threads — they are functional but not as central to discovery.

Mentions do not carry over between platforms.

Each platform's followers are distinct communities even if the content is the same.

02

Adapting your Threads posts to feel less like reposts

Threads audiences are often Instagram-native and may not know or care about Bluesky.

Avoid referencing AT Protocol, decentralization, or Bluesky-specific culture in your Threads posts — it reads as inside baseball.

Keep the core idea but strip the platform context.

Threads tends to reward personal, opinion-driven posts and genuine back-and-forth in replies.

If your skeet was a hot take or a concise observation, it will likely perform well on Threads with zero modification.

03

PostOnce keeps your Bluesky and Threads accounts in sync

Post on Bluesky and PostOnce automatically pushes your content to Threads.

No manual copy-paste.

PostOnce handles the distribution in real time so both audiences see your posts without you managing two platforms separately.

Connect once, post everywhere.

Skip the manual work

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Features

How PostOnce Handles It

Set up Bluesky to Threads crossposting once. PostOnce automates the rest.

Easy Bluesky Crossposting Setup

Connect your Bluesky and Threads 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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Setup flow

Native Video Upload to Threads

When you crosspost Bluesky to Threads, PostOnce uploads the actual video file — not a link, not a preview.

Your Bluesky content appears as a native Threads post, indistinguishable from content uploaded directly.

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Custom Crosspost Rules

Not every Bluesky post belongs on Threads. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.

Only the content you want on Threads ends up there.

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Filter rules

Auto Post to Multiple Platforms

Don't stop at Bluesky to Threads 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 Threads.

No scheduling, no batching. Publish on Bluesky and it appears on Threads within minutes — fully automated Bluesky to Threads posting.

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Automation

Bluesky vs Threads at a Glance

SpecBlueskyThreads
Caption Limit300 chars500 chars
Max Video Length1min5min
Preferred Aspect Ratio16:99:16
Max Video File Size50MB1GB
Carousel SupportUp to 4 itemsUp to 20 items
Hashtag StrategyUnlimitedUp to 1
Link SupportYesYes
Primary Audience20-4018-34

Frequently Asked Questions

Under 60 seconds. Connect both your Bluesky and Threads accounts, choose your filter rules, and you're done. New Bluesky posts will automatically appear on Threads.

PostOnce automatically adapts your 16:9 Bluesky videos to Threads's preferred 9:16 format, ensuring they look native.

Yes. Use hashtag filters to control which posts crosspost. For example, add #crosspost to Bluesky captions and only those posts will go to Threads. Or exclude specific hashtags to skip certain content.

Your captions transfer in full since Threads supports up to 500 characters, which accommodates Bluesky's 300 character limit.

Start Crossposting Bluesky to Threads

Connect your Bluesky and Threads accounts and start crossposting in minutes. No technical setup required.

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