# Post to All Social Media at Once, Automatically

> Post on the account you already use. Post Once reposts each new video and photo to your other accounts and backs it up to your own storage. Free for 10 reposts.

Post Once guide to cross posting. Source: https://postonce.com/crosspost.

Keep posting on Instagram, YouTube, Facebook, Threads or X as usual. Post Once picks up each new post and reposts it to your other accounts, with its caption, then saves a copy to your own cloud storage.

## Three ways to post everywhere

|  | By hand | A scheduling app | Post Once |
| --- | --- | --- | --- |
| Where you post | In each app, one by one | In the scheduling app | On your main account, as usual |
| Work for each post | Upload again and paste the caption, per account | Upload it there and fill in each account | None, once it is set up |
| Trending audio and effects | Yes | No, it posts through the API | Yes, you post in the native app |
| When the copies go out | When you find the time | When you schedule them | Within minutes of your post |
| Backup of every post | No | No | Saved to cloud storage you own |
| Best for | One or two accounts, now and then | Planning a calendar of posts ahead | Copying every post to your other accounts |

A scheduling app like Buffer, Later or Hootsuite publishes every post through its API, your main account included, so that post can't use trending audio or in-app effects. With Post Once you keep posting in the native app, and only the reposts go out through Post Once.

## What it works with

- **Source accounts**: Instagram, YouTube, Facebook, Threads and X
- **Reposts to**: YouTube, TikTok, Instagram, Facebook Pages, Threads, X and LinkedIn
- **Backs up to**: Google Drive, Dropbox, Backblaze B2, and Amazon S3 or any S3-compatible storage

## Nothing fails quietly

If a platform turns down a repost, Post Once tries again on its own, then tells you which account missed it and why.

- Tries again on its own, up to 5 times
- Emails you if a repost still can't go out
- Sends it again with one click on Retry
- Warns you before a connection runs out
- Asks before posting the same video twice

## What changes when a post crosses over

Each platform sets its own limits, so one post cannot go everywhere unchanged. These are the limits the platforms state themselves. The last row is what Post Once itself takes.

| Platform | Limit | Source |
| --- | --- | --- |
| Threads | Text up to 500 characters; Video up to 5 minutes; Carousels of 2 to 20 items | [Meta Threads API overview](https://developers.facebook.com/docs/threads/overview) |
| YouTube Shorts | Videos up to 3 minutes; Titles up to 100 characters | [YouTube Help: Shorts](https://support.google.com/youtube/answer/10059070) |
| X | Video up to 20 minutes, or 125 minutes with X Premium | [X API: manage posts](https://docs.x.com/x-api/posts/manage-tweets/introduction) |
| Instagram | Carousels of up to 20 images, videos or a mix | [Meta Instagram content publishing](https://developers.facebook.com/docs/instagram-platform/instagram-api-with-instagram-login/content-publishing) |
| Post Once | Videos up to 2 hours and 4K; Videos over 3 minutes, or horizontal ones, go to YouTube, Facebook and LinkedIn, which take long videos | [Post Once fact sheet](https://postonce.com/about#platforms) |

## Set it up in minutes

1. Connect the account you already post on. This is your source account.
2. Pick the accounts Post Once should repost to, and where to back up.
3. Keep posting on your source account as usual. Post Once reposts each new post with its caption and saves a copy to your storage.

## Watch the setup

[How to Post on All Social Media at Once for Free](https://www.youtube.com/watch?v=HuQ81ym5GfI) (65 seconds). Post once on Instagram, and Post Once reposts it to YouTube, Facebook, Threads, X and LinkedIn within minutes, with your caption. The whole setup in the real app.

## Common questions

### Can I post to all social media at once for free?

Yes. The Free plan gives you 10 reposts and 10 backups with every feature on and no card. See [pricing](https://postonce.com/pricing) for the paid plans, and [social media backup](https://postonce.com/backup) for how the backups work.

### Do I post from Post Once?

No. You post on your own account in its own app, as usual. Post Once reposts each new post to your other accounts. Here is [how Post Once works](https://postonce.com/help/how-post-once-works), step by step.

### Which platforms does it work with?

Source accounts: Instagram, YouTube, Facebook, Threads and X. Reposts to: YouTube, TikTok, Instagram, Facebook Pages, Threads, X and LinkedIn.

### How is this different from Buffer or Hootsuite?

A scheduling app like Buffer, Later or Hootsuite publishes your post to every account through its API, your main account included. With Post Once you post on your main account yourself, in its own app, and only the reposts go out through Post Once. For a longer take, read [why scheduling apps can hurt the reach of your main account](https://postonce.com/blog/scheduling-apps-repurpose-content).

### Will my long videos go to every platform?

Videos up to 2 hours and 4K. Videos over 3 minutes, or horizontal ones, go to YouTube, Facebook and LinkedIn, which take long videos.

### Does it repost text-only posts?

Yes. Text posts from X, Threads and Facebook Pages are reposted to X, Threads, LinkedIn and Facebook Pages. A text post too long for a destination is skipped there, never cut off. It is not a scheduler. You do not write, upload or schedule posts in Post Once.

### Can I post my Instagram Reels to YouTube automatically?

Yes. Connect Instagram as your source and YouTube as a destination, and each new Reel is uploaded to your channel as a Short, with your caption as the title and your hashtags as tags. See [Instagram to YouTube](https://postonce.com/crosspost/instagram-to-youtube) for what each kind of post becomes.

### Is there a Repurpose.io alternative?

Yes. Post Once is a [Repurpose.io alternative](https://postonce.com/alternatives/repurpose-io) that reposts within minutes, from $9 a month. The comparison also says where Repurpose.io is the better pick.

### Is there a OneUp alternative for cross-posting?

Yes. OneUp checks your source account for new posts once an hour. Post Once is a [OneUp alternative](https://postonce.com/alternatives/oneup) that checks every 1 to 5 minutes and also reads YouTube, Threads and X.