Connect Instagram to LinkedIn

Before you start

• An Instagram Business or Creator account. Instagram only lets apps read posts from professional accounts. Switching is free in the Instagram app (Settings, then Account type and tools), and your posts and followers stay as they are.
• 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 Instagram 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 Instagram 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 Instagram row. Instagram’s sign-in page opens. If you have more than one account, choose the one you post on, then 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 Instagram as usual. Post Once checks it about every minute and reposts each new post to LinkedIn.

Already using Post Once?

If Instagram 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 Instagram 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 Instagram post becomes on LinkedIn

On Instagram	On LinkedIn
A Reel or video up to 3 minutes, vertical or square	A video post.
A Reel or 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 Story	Skipped. LinkedIn 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

Your Instagram caption goes with each repost.

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 and Photos. 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.

Your Instagram row also has Include trial reels. When it is off, the default, a trial reel waits until you share it with your followers, then reposts like a new post. Post Once checks for that every 30 minutes for up to 7 days. Turn it on to repost trial reels right away.

Check that it works

Post something on Instagram as usual. Within a minute or two it shows up under Your posts on the dashboard, 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.