How to Cross-Post from Facebook to Substack Automatically

Post natively on Facebook and Ferryman automatically syncs every new post to Substack — no copy-paste, no workflow change. Set up in under two minutes.

Start cross-posting free

Why cross-post from Facebook to Substack

Facebook and Substack reach genuinely different audiences. Facebook is the broadest reach of any social platform — Pages put your content in front of a general, multi-generational audience. Substack, by contrast, is newsletter readers, paid subscribers, independent writers, and high-intent followers who want deeper context than a social feed usually provides.

Substack Notes lets newsletter-first creators stay visible between essays and turn short social posts into subscriber touchpoints. If you're already putting in the effort to write good posts on Facebook, there's no reason that work shouldn't reach a Substack audience too — except that maintaining two presences manually is exhausting and easy to abandon. That's the problem Ferryman exists to solve.

Key differences between Facebook and Substack

Cross-posting isn't just a copy-paste. The two platforms have different limits and conventions, and Ferryman handles each difference so you don't have to think about it.

Capability	Facebook	Substack
Character limit	63,206	10,000
Images per post	30	10
Alt text on images	No	No
Video support	Up to 10:00	Up to 10:00
Native threading	No	No

Facebook allows up to 63,206 characters, but Substack's 10,000-character limit is generous enough that most Facebook content fits as a single Substack post.

Substack supports 10 images per post — 20 fewer than Facebook. If you post more images than Substack allows, Ferryman includes the first 10 on Substack and notes the overflow in your dashboard.

What gets synced

Original posts (replies and quote posts are off by default and can be enabled)
Images up to 10 per post, with alt text added where supported
Videos up to 600-second length on Substack (Creator plan)
Links — Ferryman preserves URLs and link cards where Substack supports them
Hashtags and mentions are preserved as-is; platform-specific mention syntax is rewritten
Most posts fit as a single Substack post

Set up Facebook → Substack cross-posting

Sign in to Ferryman with your X account. This is how Ferryman authenticates you — you can still set Facebook as your origin platform afterwards.
Go to Settings and connect your Facebook account. This is the platform you'll post on natively.
Connect your Substack account in Settings. See the Substack integration guide for the exact steps.
Set Facebook as your origin platform and check Substack as a target. Toggle cross-posting on, and Ferryman will sync new Facebook posts to Substack within a few minutes.

Edge cases worth knowing

Skip a specific post: include #noferry anywhere in your Facebook post and Ferryman won't sync it to Substack.
Replies and quote posts: off by default. You can enable them in Settings if you want your Facebook conversations to appear on Substack too.
Threads on Facebook: Substack doesn't have native threading, so Ferryman joins thread parts into a single longer post where it fits.
Editing or deleting: Ferryman doesn't propagate edits or deletions automatically. Each platform keeps its own copy once posted.
Scheduling: Use Ferryman's planner to schedule a post and Ferryman publishes to Facebook and Substack at the same time.

Manual cross-posting vs. Ferryman

Task	Manual	Ferryman
Cross-post a new Facebook post	Copy text, re-upload images, rewrite mentions	Automatic, within minutes
Handle character-limit differences	Rewrite or split by hand	Most posts fit as a single Substack post
Preserve alt text on images	Retype every time	Added where supported
Skip specific posts	Remember to not cross-post	Add #noferry and you're done

Frequently asked questions

How long does it take for a Facebook post to appear on Substack?

Ferryman checks for new Facebook posts every few minutes and syncs them to Substack as they arrive. Most cross-posts go live on Substack within five minutes of the original Facebook post.

What happens if my Facebook post is too long for Substack?

Facebook allows up to 63,206 characters, but Substack's 10,000-character limit is generous enough that most Facebook content fits as a single Substack post.

Are images and videos preserved when cross-posting from Facebook to Substack?

Yes. Images attached to your Facebook post are uploaded to Substack automatically, up to Substack's limit of 10 per post. Videos are preserved when both platforms support them (Creator plan).

Can I cross-post one Facebook post but skip another?

Yes. Include #noferry anywhere in a Facebook post and Ferryman will skip syncing it to Substack (and any other connected platforms).

Does Ferryman cross-post my Facebook replies and quote posts?

By default, only original posts are cross-posted. You can opt in to syncing replies, quote posts, or reposts from your Ferryman settings.

Is cross-posting from Facebook to Substack free?

Every account starts with a 7-day free trial, so you can try cross-posting between Facebook and Substack before you're billed. Cancel anytime before the trial ends and you won't be charged.

Related cross-post guides

Start cross-posting from Facebook to Substack

Set up in under 2 minutes. Free to try.

Get Started