Connect Facebook to Threads

Before you start

• A Facebook Page you manage. Facebook only lets apps read posts from Pages, not personal profiles.
• A Threads account. It does not need to be a professional account.
• A Post Once account. The free plan includes 10 reposts, with no card needed.

How to connect Facebook to Threads

1. Create a free account at app.postonce.com. After two short intro screens, Post Once asks where you post.

2. Under Where do you post first?, pick Facebook and press Continue.

   

3. Under Where else should it land?, pick Threads. Add any other apps, or a backup, then press Continue.

4. On Connect your accounts., press Connect on the Facebook row. Sign in with Facebook. In Facebook’s permissions dialog, make sure the Page you post on is selected. Back in Post Once, pick it in the Repost from Page list on the Facebook row. With only one Page, it is picked for you.

   

5. Press Connect on the Threads row. Sign in on the Threads page that opens and allow access.

6. When both rows say Connected, press Go to dashboard.

From then on, keep posting on Facebook as usual. Post Once checks it about every five minutes and reposts each new post to Threads.

Already using Post Once?

If Facebook is already the source of your bridge, open Bridge and press Connect next to Threads in the Destinations card, or press Add destination on the dashboard.

If your bridge reads from another account, add a second bridge with Facebook as its source from the bridge switcher. Free and Solo include 1 bridge, Studio 3 and Agency as many as you need. See bridges.

What each Facebook post becomes on Threads

On Facebook	On Threads
A Reel or video up to 3 minutes, vertical or square	A video post.
A video over 3 minutes, or a landscape one	Skipped, with “Threads only takes short vertical videos”.
A photo	A photo post.
A photo album	A carousel of up to 20 photos.
A text or link post	A text post. One over 500 characters is skipped with “Too long for Threads (500 characters)”.
A Page Story	Skipped. Threads does not take Stories.

A skipped post shows the reason on your dashboard and still goes to your other destinations. See long videos for how Post Once tells short from long.

How your caption carries over

The post text goes with each repost. When a link post leaves the link out of its text, Post Once adds it. Events and check-ins are not reposted.

Threads allows 500 characters. A longer caption on a photo or video is cut at 500, sometimes mid-word, so put what matters first.

Choose what goes to Threads

On the Bridge page, the Threads row has two settings.

• What to post has a switch for Videos, Photos and Text posts. Switch a kind off and those posts skip Threads, though you can still send one there by hand. Switching every kind off pauses Threads.
• Rewrite caption changes the caption for Threads only: Remove comment, DM and link in bio prompts, Remove hashtags and mentions, Rewrite with AI to suit Threads, and Add your own text at the start or end. Each one is off until you turn it on.

Check that it works

Post something on Facebook as usual. Within about five minutes it shows up under Your posts on the dashboard (press Check now to look straight away), then goes to Threads. Each post shows where it went, what was skipped and why.

If a repost fails, Post Once tries again up to 5 times over about half an hour. If it still fails, you get an email, and Retry sends it again to just the accounts it missed. See a post did not repost.

Only posts published after you connect are reposted on their own. Older ones are listed in Your posts, where you can send any of them by hand.