How do you cross-post between Facebook and Instagram?

Instagram to Facebook, when you post

This is the usual case. Instagram’s help (profile to Facebook, read on 10 October 2026) says it works only in the Instagram app on Android or iPhone, and only once both accounts are in the same Accounts Center.

1. Upload or take the photo or video.
2. Before you share it, scroll down and tap Also share on….
3. Tap the toggle next to your Facebook Page’s name, as the page puts it.
4. Go back and tap Share.

Sharing to a Page has one more rule. Instagram’s help says sharing from a personal Instagram account to a Facebook Page is no longer available, and asks for three things: a professional account, full control of the Page, and the two connected (professional account to a Page). A reel can only be shared to Facebook at the moment you create it (reels to Facebook); a story has its own Share your story option and a Share to Facebook story choice after it is published.

Turning on automatic sharing

In the Instagram app, open your profile, tap the menu, then Accounts Center, Connected experiences and Sharing across profiles. Pick the account to share from and the one to share to, then switch on Your Instagram posts. Reels have their own switch in the same list. A professional account can also open Crossposting from its menu, which leads to the same screen and lists posts, story and reels separately.

You can still switch sharing off for one post, story or reel after setting it up.

Facebook to Instagram

It goes the other way too, with more exceptions. From Facebook’s help page, which we read in its Russian edition and paraphrase here: both accounts must be in the same Accounts Center, and Instagram’s privacy settings apply to what arrives. Facebook says some posts can’t be shared to Instagram: a post with several videos or more than 10 photos, a post whose photos differ in size, photos that don’t fit Instagram’s width and height (some are cropped for the purpose), and posts that use features Instagram doesn’t have, such as text-only posts, live video, reposts and some formatting tools.

In the Facebook app, tap What’s on your mind?, tap Instagram under your name, switch it on for this post, and post. The same screen leads to Accounts Center, where Your Facebook posts turns automatic sharing on. The page says the feature isn’t available on a computer.

Both at once from a computer

Meta Business Suite offers the destinations while you create a post. It needs a business portfolio and access to the assets in it, and the Page and the Instagram profile must be connected and in the same portfolio (Meta’s page). Meta lists what can go where: a Facebook post can also go to Instagram Feed, an Instagram post to Facebook Feed, and reels both ways. The full table is in our answer on posting to several networks at once.

What changes when a post crosses

Posting to both with Mellow Hub

Meta’s settings copy a post you made in one app. Hub works the other way: you write the post once in Compose, choose a Facebook Page and an Instagram account, and each gets its own caption if you want one. Hub checks an Instagram caption to 2,200 characters and a Facebook post to 63,206.

Hub reaches Facebook through a Page you administer and Instagram through a professional account. Both take a feed post, a Reel or a Story, and each destination counts as one publication. Hub doesn’t read your Instagram or Facebook app settings and doesn’t copy posts you make in those apps.

1. Create a Hub account.
2. Connect your accounts in Channels. Each network’s own sign-in screen opens, so Hub never sees a password. Bluesky is the exception: Hub connects it with your handle and an app password, which you can revoke in Bluesky’s settings.
3. Write the post in Compose, choose the channels and add the media. Where one network’s limit is shorter, give that network its own caption. The composer can shorten it for you.
4. Hub checks every network’s rules before anything is sent: caption length, media count and type, a required title or board. It lists every problem at once, naming the network.
5. Publish now or pick a time. Each network succeeds or fails on its own and returns its own link.

Hub is paid: plans start at $19 a month (Solo), after a 7-day trial with a card on file that costs nothing if you cancel before it ends, and a monthly plan's first month is 20% off. Publishing is unlimited on every plan, under a fair-use ceiling that stops automated floods (900 publications a month on Solo). One publication is one post on one account, so a post sent to five networks counts as five. There are no automatic overage charges.