RepostitHow to Link All Your Social Media Accounts (So One Post Goes Everywhere)
· 5 min read
“Linking” your social media accounts can mean two very different things, and most guides mix them up:
- Profile links: showing your Instagram or YouTube on your TikTok profile so followers can find you elsewhere. Free, built into the apps, and it doesn’t post anything.
- Cross-posting: when you post on one app, the same post appears on the others automatically. Only one route is built in (Instagram to Facebook). Everything else needs a tool.
This guide covers both: every native link that exists in 2026, step by step, then how to set things up so that one post goes everywhere.
What each app can link natively
| From | To | Native option | Posts automatically? |
|---|---|---|---|
| Accounts Center | Yes (posts, Reels, Stories) | ||
| Threads | Same login; Meta has tested a “Share to Threads” toggle | Only if the toggle is available to you | |
| TikTok | Instagram, YouTube | Profile → Edit profile → Social | No, profile icons only |
| TikTok | Instagram, Facebook | Share button after posting | No, manual each time |
| YouTube | Anything | Links in channel header | No |
| X (Twitter) | Retired in 2018 | No | |
| LinkedIn, Pinterest | Others | Profile links only | No |
How to link Instagram and Facebook (and auto-share)
This is the only native link that actually cross-posts.
- In Instagram, open your profile and tap the menu (☰), then Accounts Center.
- Tap Accounts → Add accounts and add your Facebook account. Business and creator accounts can also link a Facebook Page.
- In Accounts Center, open Connected experiences → Sharing across profiles.
- Choose the Instagram account, then the Facebook profile or Page, and turn on automatic sharing for posts, Reels and Stories as you prefer.
Menu names move around between app versions, but the setting always lives in Accounts Center. Meta’s own help page: Share your Instagram posts to Facebook.
Limits: it only covers Instagram → Facebook, it shares exactly the same caption, and you can’t change timing.
How to link Instagram and YouTube to TikTok
- In TikTok, tap Profile → Edit profile.
- Under Social, tap Instagram or YouTube and sign in.
- The icons now appear on your profile, next to Edit profile.
This sends visitors to your other profiles. It does not post your TikToks to Instagram or YouTube. Using TikTok’s share button to send a video to Instagram works one video at a time, and the shared video keeps the TikTok watermark, which Instagram is known to deprioritise. See how to link TikTok to Instagram for details.
How to link X (Twitter) and Facebook
There’s no longer a built-in connection. X lost the ability to post to Facebook profiles in 2018, when Facebook retired the permission that allowed it, and Facebook’s current settings don’t offer an X connection. To post to both you need a third-party tool. Our step-by-step guide: How to connect X (Twitter) to Facebook.
How to make one post go everywhere
If what you really want is “when I post on Instagram, it also posts on TikTok” (or the other way round), you need a reposting tool that is connected to every account through each app’s official sign-in. Here’s how that works with Repostit:
- Pick your main app. The one you already post on first, usually TikTok or Instagram.
- Connect your accounts. Sign in to each app with its official login: TikTok, Instagram, YouTube, Facebook, X, Threads, LinkedIn and Pinterest are supported. Repostit never asks for your passwords.
- Create a workflow, for example TikTok → Instagram Reels, YouTube Shorts, Facebook Reels.
- Start on Manual and publish one test video. Check each app: right account, full video, no watermark, caption and sound.
- Switch to Auto. From now on, every new post is shared to the other apps, resized for each one, with your caption and hashtags.
Ready-made routes: TikTok to Instagram, TikTok to YouTube, TikTok to Facebook, TikTok to Pinterest.
Is it safe to link your accounts to a tool?
- Use official sign-in only. A legitimate tool sends you to TikTok, Instagram or Google to approve access. Never type your password into a third-party site.
- Read the permissions screen. Posting tools need permission to publish; they shouldn’t need your DMs.
- Use business or creator accounts for Instagram and Facebook. Personal Instagram accounts can’t be published to by apps. Our guide: business or creator account?
- You can revoke access anytime from each app’s settings (in TikTok under Settings and privacy → Security & permissions; in Instagram and Facebook under Business integrations or Accounts Center).
Common problems
| Problem | Why | Fix |
|---|---|---|
| Instagram won’t link to my Facebook Page | You aren’t an admin of the Page, or the Instagram account is personal | Get full Page access, switch Instagram to creator or business |
| Wrong account connected | The browser was signed in to another account | Sign out of the app in your browser, then reconnect. See why your browser matters |
| Connection stopped working | Password change or expired permission | Reconnect the account in your tool |
| Not sure if it’s a Page or profile | Facebook has both | How to tell a Facebook profile from a Page |
FAQ
Can I link all my social media accounts in one place?
Not natively. Meta’s Accounts Center links Instagram, Facebook and Threads. TikTok, YouTube, X, LinkedIn and Pinterest each stay separate. A reposting or scheduling tool is the only way to manage them together.
How do I make my Instagram post also post to TikTok?
Neither app offers this. Use a reposting tool with an Instagram → TikTok workflow. See how to repost Instagram Reels on TikTok automatically.
Does linking TikTok to Instagram post my videos there?
No. It only adds an Instagram icon to your TikTok profile.
Will cross-posting hurt my reach?
Not if each copy is clean (no other app’s watermark) and fits the app’s format. See does repurposing hurt reach?
Is there a free way to link everything?
Instagram → Facebook sharing is free. For the rest, tools like Repostit offer a 14-day free trial with no card.
