Crosspost from Facebook to Bluesky Automatically

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

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Facebook and Bluesky: completely separate worlds

! No native Facebook-to-Bluesky integration exists

+ ! Bluesky has a 300-character post limit — most Facebook posts are much longer

+ ! Bluesky does not natively embed Facebook content or links

+ ! Facebook images can be attached to Bluesky posts via automation tools

+ ! Bluesky's user base is distinct from Facebook's — the same tone won't work for both

= too much manual work

↓ There's an easier way

What You Need to Know

01

How to automate Facebook-to-Bluesky posting

IFTTT has an applet that connects Facebook Pages to Bluesky: when you publish a new Facebook page post, it creates a Bluesky post with the content.

Dlvr.it offers similar functionality with more control over formatting.

Buffer now supports Bluesky natively, so you can schedule and crosspost from a single dashboard if you're already using Buffer for Facebook.

For text-only Facebook posts, the automation works cleanly within the 300-character limit.

For longer posts, the tool cuts off the text — worth editing the Bluesky draft before it goes live.

02

Adapting Facebook content for Bluesky's community

Bluesky's current audience is smaller and more curated than Facebook's — tech-adjacent, interested in open protocols, skeptical of corporate social media.

Content that does well on Facebook (inspirational quotes, personal life updates, broad community announcements) doesn't tend to land the same way on Bluesky.

Direct, substantive posts perform better.

Bluesky users also notice and dislike cross-posted content that looks automated or generic.

If you're posting the same thing everywhere unchanged, the Bluesky community will call it out.

03

PostOnce handles the Facebook-to-Bluesky connection

PostOnce connects your Facebook page to Bluesky and publishes adapted posts automatically — formatted to fit within 300 characters and written in the direct style that Bluesky users respond to.

Your Bluesky audience stays updated without you managing a separate posting workflow.

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Features

How PostOnce Handles It

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

Easy Facebook Crossposting Setup

Connect your Facebook and Bluesky 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 Bluesky

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

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

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Custom Crosspost Rules

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

Only the content you want on Bluesky ends up there.

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Filter rules

Auto Post to Multiple Platforms

Don't stop at Facebook to Bluesky crossposting. Auto post your Facebook 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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tiktok logo
instagram logo
youtube logo
linkedin logo
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bluesky logo
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Real-Time Automation

PostOnce monitors your Facebook account and automatically crossposts new content to Bluesky.

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

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Automation

Facebook vs Bluesky at a Glance

SpecFacebookBluesky
Caption Limit63,206 chars300 chars
Max Video Length4h1min
Preferred Aspect Ratio16:916:9
Max Video File Size10GB50MB
Carousel SupportUp to 10 itemsUp to 4 items
Hashtag StrategyUnlimitedUnlimited
Link SupportYesYes
Primary Audience25-5420-40

Frequently Asked Questions

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

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 Facebook captions and only those posts will go to Bluesky. Or exclude specific hashtags to skip certain content.

PostOnce intelligently adapts your captions from Facebook's 63,206 character limit to fit Bluesky's 300 character limit, preserving your key message.

Start Crossposting Facebook to Bluesky

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

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