Connect Threads to LinkedIn

Before you start

• A Threads account. It does not need to be a professional account.
• A LinkedIn account. Post Once posts to your personal profile, not a company Page.
• A Post Once account. The free plan includes 10 reposts, with no card needed.

How to connect Threads to LinkedIn

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 Threads and press Continue.

   

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

4. On Connect your accounts., press Connect on the Threads row. Sign in on the Threads page that opens and allow access.

   

5. Press Connect on the LinkedIn row. Sign in with LinkedIn and allow access.

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

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

Already using Post Once?

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

If your bridge reads from another account, add a second bridge with Threads 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 Threads post becomes on LinkedIn

On Threads	On LinkedIn
A video up to 3 minutes, vertical or square	A video post.
A video over 3 minutes, or a landscape one	A video post, up to 30 minutes and 500 MB. Longer videos skip LinkedIn.
A photo	A photo post.
A carousel (its video slides are left out)	A swipeable PDF post, one page per photo, titled with the first line of your caption. Pick Photo grid to post up to 20 photos in a grid instead.
A text post	A text post, up to 3,000 characters.

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 text post has a link preview, the link’s address is added to the text. Quotes, polls and GIF posts are not reposted.

LinkedIn takes captions up to 3,000 characters, and hashtags in them become LinkedIn hashtags. Posts are public, on your personal profile.

Choose what goes to LinkedIn

On the Bridge page, the LinkedIn row has three settings.

• What to post has a switch for Videos, Photos and Text posts. Switch a kind off and those posts skip LinkedIn, though you can still send one there by hand. Switching every kind off pauses LinkedIn.
• Carousels sits under Photos and decides how a post with two or more photos goes to LinkedIn: Swipeable PDF, the default, which people swipe through like a carousel, or Photo grid. It shows while Photos is on.
• Rewrite caption changes the caption for LinkedIn only: Remove comment, DM and link in bio prompts, Remove hashtags and mentions, Rewrite with AI to suit LinkedIn, 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 Threads 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 LinkedIn. 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.